./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_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_fffc3f3f-9300-4ad9-9510-e5d003986637/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fffc3f3f-9300-4ad9-9510-e5d003986637/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_fffc3f3f-9300-4ad9-9510-e5d003986637/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fffc3f3f-9300-4ad9-9510-e5d003986637/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fffc3f3f-9300-4ad9-9510-e5d003986637/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_fffc3f3f-9300-4ad9-9510-e5d003986637/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 7faac9952fd378b53dcd8f21391daa9cc75834f7be2a5ad0c70d96fc8524bd08 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:33:28,407 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:33:28,510 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fffc3f3f-9300-4ad9-9510-e5d003986637/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:33:28,524 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:33:28,525 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:33:28,568 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:33:28,569 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:33:28,570 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:33:28,571 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:33:28,577 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:33:28,578 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:33:28,579 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:33:28,579 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:33:28,581 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:33:28,582 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:33:28,583 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:33:28,583 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:33:28,584 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:33:28,584 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:33:28,585 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:33:28,585 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:33:28,586 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:33:28,586 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:33:28,587 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:33:28,587 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:33:28,588 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:33:28,588 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:33:28,589 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:33:28,590 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:33:28,590 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:33:28,592 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:33:28,592 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:33:28,593 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:33:28,593 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:33:28,593 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:33:28,594 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:33:28,594 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:33:28,594 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:33:28,595 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:33:28,595 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:33:28,595 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:33:28,596 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_fffc3f3f-9300-4ad9-9510-e5d003986637/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fffc3f3f-9300-4ad9-9510-e5d003986637/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7faac9952fd378b53dcd8f21391daa9cc75834f7be2a5ad0c70d96fc8524bd08 [2023-11-19 07:33:28,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:33:28,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:33:28,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:33:28,998 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:33:28,999 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:33:29,000 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fffc3f3f-9300-4ad9-9510-e5d003986637/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i [2023-11-19 07:33:32,154 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:33:32,547 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:33:32,547 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fffc3f3f-9300-4ad9-9510-e5d003986637/sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i [2023-11-19 07:33:32,579 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fffc3f3f-9300-4ad9-9510-e5d003986637/bin/uautomizer-verify-uCwYo4JHxu/data/d13c2fc82/da77940a24ac4cf39db63f31a22d9360/FLAGffe6479a9 [2023-11-19 07:33:32,743 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fffc3f3f-9300-4ad9-9510-e5d003986637/bin/uautomizer-verify-uCwYo4JHxu/data/d13c2fc82/da77940a24ac4cf39db63f31a22d9360 [2023-11-19 07:33:32,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:33:32,748 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:33:32,753 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:33:32,753 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:33:32,760 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:33:32,760 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:32" (1/1) ... [2023-11-19 07:33:32,762 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dd3b2c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:32, skipping insertion in model container [2023-11-19 07:33:32,762 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:32" (1/1) ... [2023-11-19 07:33:32,826 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:33:33,557 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:33:33,572 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:33:33,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:33:33,787 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:33:33,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:33 WrapperNode [2023-11-19 07:33:33,788 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:33:33,789 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:33:33,790 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:33:33,790 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:33:33,799 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:33" (1/1) ... [2023-11-19 07:33:33,841 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:33" (1/1) ... [2023-11-19 07:33:33,892 INFO L138 Inliner]: procedures = 377, calls = 73, calls flagged for inlining = 10, calls inlined = 11, statements flattened = 257 [2023-11-19 07:33:33,892 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:33:33,893 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:33:33,893 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:33:33,894 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:33:33,904 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:33" (1/1) ... [2023-11-19 07:33:33,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:33" (1/1) ... [2023-11-19 07:33:33,910 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:33" (1/1) ... [2023-11-19 07:33:33,911 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:33" (1/1) ... [2023-11-19 07:33:33,923 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:33" (1/1) ... [2023-11-19 07:33:33,929 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:33" (1/1) ... [2023-11-19 07:33:33,935 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:33" (1/1) ... [2023-11-19 07:33:33,938 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:33" (1/1) ... [2023-11-19 07:33:33,957 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:33:33,958 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:33:33,958 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:33:33,958 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:33:33,959 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:33" (1/1) ... [2023-11-19 07:33:33,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:33:33,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fffc3f3f-9300-4ad9-9510-e5d003986637/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:34,002 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fffc3f3f-9300-4ad9-9510-e5d003986637/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:34,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fffc3f3f-9300-4ad9-9510-e5d003986637/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:33:34,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:33:34,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:33:34,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:33:34,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 07:33:34,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:33:34,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:33:34,055 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:33:34,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:33:34,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:33:34,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:33:34,056 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 07:33:34,057 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 07:33:34,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:33:34,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:33:34,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:33:34,061 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:33:34,338 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:33:34,341 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:33:34,856 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:33:34,867 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:33:34,868 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-11-19 07:33:34,873 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:34 BoogieIcfgContainer [2023-11-19 07:33:34,873 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:33:34,876 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:33:34,876 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:33:34,880 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:33:34,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:33:32" (1/3) ... [2023-11-19 07:33:34,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@891331 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:33:34, skipping insertion in model container [2023-11-19 07:33:34,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:33" (2/3) ... [2023-11-19 07:33:34,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@891331 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:33:34, skipping insertion in model container [2023-11-19 07:33:34,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:34" (3/3) ... [2023-11-19 07:33:34,883 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_94-alloc_region_racing.i [2023-11-19 07:33:34,892 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:33:34,903 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:33:34,904 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-19 07:33:34,904 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:33:35,037 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:33:35,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 286 transitions, 579 flow [2023-11-19 07:33:35,262 INFO L124 PetriNetUnfolderBase]: 48/409 cut-off events. [2023-11-19 07:33:35,262 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:33:35,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 409 events. 48/409 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1318 event pairs, 0 based on Foata normal form. 0/342 useless extension candidates. Maximal degree in co-relation 227. Up to 8 conditions per place. [2023-11-19 07:33:35,277 INFO L82 GeneralOperation]: Start removeDead. Operand has 258 places, 286 transitions, 579 flow [2023-11-19 07:33:35,295 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 256 places, 283 transitions, 573 flow [2023-11-19 07:33:35,298 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:33:35,313 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 256 places, 283 transitions, 573 flow [2023-11-19 07:33:35,318 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 256 places, 283 transitions, 573 flow [2023-11-19 07:33:35,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 283 transitions, 573 flow [2023-11-19 07:33:35,424 INFO L124 PetriNetUnfolderBase]: 47/406 cut-off events. [2023-11-19 07:33:35,425 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:33:35,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 406 events. 47/406 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1314 event pairs, 0 based on Foata normal form. 0/340 useless extension candidates. Maximal degree in co-relation 227. Up to 8 conditions per place. [2023-11-19 07:33:35,451 INFO L119 LiptonReduction]: Number of co-enabled transitions 25270 [2023-11-19 07:33:50,006 INFO L134 LiptonReduction]: Checked pairs total: 51667 [2023-11-19 07:33:50,006 INFO L136 LiptonReduction]: Total number of compositions: 244 [2023-11-19 07:33:50,024 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:33:50,031 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;@3e1608d9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:33:50,032 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-19 07:33:50,037 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:33:50,038 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-19 07:33:50,038 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:33:50,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:50,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:33:50,039 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:33:50,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:50,045 INFO L85 PathProgramCache]: Analyzing trace with hash 32879355, now seen corresponding path program 1 times [2023-11-19 07:33:50,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:50,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551148307] [2023-11-19 07:33:50,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:50,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:50,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:50,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:50,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551148307] [2023-11-19 07:33:50,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551148307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:50,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:50,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:33:50,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958240025] [2023-11-19 07:33:50,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:50,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:33:50,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:50,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:33:50,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:33:50,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 530 [2023-11-19 07:33:50,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 97 transitions, 201 flow. Second operand has 3 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:50,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:50,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 530 [2023-11-19 07:33:50,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:33:51,123 INFO L124 PetriNetUnfolderBase]: 819/1728 cut-off events. [2023-11-19 07:33:51,124 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:33:51,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3357 conditions, 1728 events. 819/1728 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 10134 event pairs, 0 based on Foata normal form. 149/1536 useless extension candidates. Maximal degree in co-relation 3314. Up to 1597 conditions per place. [2023-11-19 07:33:51,138 INFO L140 encePairwiseOnDemand]: 501/530 looper letters, 85 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2023-11-19 07:33:51,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 96 transitions, 373 flow [2023-11-19 07:33:51,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:33:51,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:33:51,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 872 transitions. [2023-11-19 07:33:51,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5484276729559748 [2023-11-19 07:33:51,158 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 872 transitions. [2023-11-19 07:33:51,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 872 transitions. [2023-11-19 07:33:51,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:33:51,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 872 transitions. [2023-11-19 07:33:51,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:51,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 530.0) internal successors, (2120), 4 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:51,182 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 530.0) internal successors, (2120), 4 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:51,184 INFO L175 Difference]: Start difference. First operand has 74 places, 97 transitions, 201 flow. Second operand 3 states and 872 transitions. [2023-11-19 07:33:51,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 96 transitions, 373 flow [2023-11-19 07:33:51,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 96 transitions, 373 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:33:51,196 INFO L231 Difference]: Finished difference. Result has 74 places, 71 transitions, 157 flow [2023-11-19 07:33:51,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=530, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=74, PETRI_TRANSITIONS=71} [2023-11-19 07:33:51,202 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 0 predicate places. [2023-11-19 07:33:51,202 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 71 transitions, 157 flow [2023-11-19 07:33:51,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:51,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:51,203 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:33:51,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:33:51,204 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:33:51,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:51,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1532369455, now seen corresponding path program 1 times [2023-11-19 07:33:51,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:51,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215938215] [2023-11-19 07:33:51,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:51,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:33:51,281 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:33:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:33:51,355 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:33:51,355 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:33:51,357 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-19 07:33:51,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-19 07:33:51,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-19 07:33:51,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-19 07:33:51,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-19 07:33:51,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-19 07:33:51,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-19 07:33:51,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-19 07:33:51,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-11-19 07:33:51,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-11-19 07:33:51,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-11-19 07:33:51,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-19 07:33:51,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-19 07:33:51,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-19 07:33:51,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-19 07:33:51,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-19 07:33:51,367 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-19 07:33:51,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:33:51,368 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 07:33:51,372 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:33:51,372 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:33:51,446 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:33:51,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 343 places, 383 transitions, 782 flow [2023-11-19 07:33:51,622 INFO L124 PetriNetUnfolderBase]: 81/667 cut-off events. [2023-11-19 07:33:51,622 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:33:51,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679 conditions, 667 events. 81/667 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2796 event pairs, 0 based on Foata normal form. 0/552 useless extension candidates. Maximal degree in co-relation 411. Up to 12 conditions per place. [2023-11-19 07:33:51,634 INFO L82 GeneralOperation]: Start removeDead. Operand has 343 places, 383 transitions, 782 flow [2023-11-19 07:33:51,643 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 343 places, 383 transitions, 782 flow [2023-11-19 07:33:51,644 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:33:51,644 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 343 places, 383 transitions, 782 flow [2023-11-19 07:33:51,644 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 343 places, 383 transitions, 782 flow [2023-11-19 07:33:51,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 343 places, 383 transitions, 782 flow [2023-11-19 07:33:51,785 INFO L124 PetriNetUnfolderBase]: 81/667 cut-off events. [2023-11-19 07:33:51,785 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:33:51,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679 conditions, 667 events. 81/667 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2796 event pairs, 0 based on Foata normal form. 0/552 useless extension candidates. Maximal degree in co-relation 411. Up to 12 conditions per place. [2023-11-19 07:33:51,838 INFO L119 LiptonReduction]: Number of co-enabled transitions 72200 [2023-11-19 07:34:09,637 INFO L134 LiptonReduction]: Checked pairs total: 163554 [2023-11-19 07:34:09,637 INFO L136 LiptonReduction]: Total number of compositions: 318 [2023-11-19 07:34:09,640 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:34:09,641 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;@3e1608d9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:34:09,642 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-19 07:34:09,645 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:34:09,646 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-11-19 07:34:09,646 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:34:09,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:09,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:34:09,647 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 07:34:09,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:09,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1780110228, now seen corresponding path program 1 times [2023-11-19 07:34:09,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:09,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395131678] [2023-11-19 07:34:09,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:09,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:09,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:09,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:09,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395131678] [2023-11-19 07:34:09,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395131678] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:09,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:09,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:34:09,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614282114] [2023-11-19 07:34:09,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:09,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:09,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:09,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:09,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:09,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 701 [2023-11-19 07:34:09,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 141 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 332.3333333333333) internal successors, (997), 3 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:09,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:09,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 701 [2023-11-19 07:34:09,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:19,236 INFO L124 PetriNetUnfolderBase]: 53420/82160 cut-off events. [2023-11-19 07:34:19,237 INFO L125 PetriNetUnfolderBase]: For 138/138 co-relation queries the response was YES. [2023-11-19 07:34:19,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161434 conditions, 82160 events. 53420/82160 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 1362. Compared 604202 event pairs, 24726 based on Foata normal form. 5486/69931 useless extension candidates. Maximal degree in co-relation 9782. Up to 79103 conditions per place. [2023-11-19 07:34:19,817 INFO L140 encePairwiseOnDemand]: 663/701 looper letters, 122 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2023-11-19 07:34:19,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 136 transitions, 536 flow [2023-11-19 07:34:19,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:19,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:34:19,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1163 transitions. [2023-11-19 07:34:19,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553019495958155 [2023-11-19 07:34:19,824 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1163 transitions. [2023-11-19 07:34:19,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1163 transitions. [2023-11-19 07:34:19,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:19,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1163 transitions. [2023-11-19 07:34:19,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 387.6666666666667) internal successors, (1163), 3 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:19,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 701.0) internal successors, (2804), 4 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:19,839 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 701.0) internal successors, (2804), 4 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:19,839 INFO L175 Difference]: Start difference. First operand has 107 places, 141 transitions, 298 flow. Second operand 3 states and 1163 transitions. [2023-11-19 07:34:19,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 136 transitions, 536 flow [2023-11-19 07:34:19,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 136 transitions, 536 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:34:19,848 INFO L231 Difference]: Finished difference. Result has 110 places, 109 transitions, 248 flow [2023-11-19 07:34:19,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=701, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=110, PETRI_TRANSITIONS=109} [2023-11-19 07:34:19,850 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 3 predicate places. [2023-11-19 07:34:19,850 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 109 transitions, 248 flow [2023-11-19 07:34:19,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.3333333333333) internal successors, (997), 3 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:19,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:19,852 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-19 07:34:19,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:34:19,853 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 07:34:19,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:19,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1889801612, now seen corresponding path program 1 times [2023-11-19 07:34:19,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:19,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406614894] [2023-11-19 07:34:19,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:19,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:19,980 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:34:19,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:19,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406614894] [2023-11-19 07:34:19,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406614894] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:19,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:19,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:34:19,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429198326] [2023-11-19 07:34:19,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:19,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:19,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:19,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:19,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:20,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 701 [2023-11-19 07:34:20,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 109 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 332.3333333333333) internal successors, (997), 3 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:20,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:20,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 701 [2023-11-19 07:34:20,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand