./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a 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_30d4b3fd-a84c-4972-9820-e56deff01c1f/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4b3fd-a84c-4972-9820-e56deff01c1f/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4b3fd-a84c-4972-9820-e56deff01c1f/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4b3fd-a84c-4972-9820-e56deff01c1f/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4b3fd-a84c-4972-9820-e56deff01c1f/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4b3fd-a84c-4972-9820-e56deff01c1f/bin/uautomizer-verify-4GaUIPS5ZU --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 af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:17:47,750 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:17:47,842 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4b3fd-a84c-4972-9820-e56deff01c1f/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-31 22:17:47,848 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:17:47,850 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:17:47,875 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:17:47,876 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:17:47,877 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:17:47,877 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:17:47,878 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:17:47,878 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:17:47,879 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:17:47,880 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:17:47,880 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:17:47,880 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:17:47,881 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:17:47,881 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:17:47,882 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:17:47,882 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:17:47,883 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:17:47,883 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:17:47,888 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:17:47,888 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:17:47,888 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:17:47,889 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:17:47,889 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 22:17:47,889 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:17:47,889 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:17:47,890 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:17:47,890 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:17:47,890 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:17:47,890 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:17:47,891 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:17:47,891 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:17:47,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:17:47,893 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:17:47,894 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:17:47,895 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:17:47,895 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:17:47,895 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:17:47,896 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:17:47,897 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:17:47,897 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:17:47,897 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:17:47,897 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_30d4b3fd-a84c-4972-9820-e56deff01c1f/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4b3fd-a84c-4972-9820-e56deff01c1f/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 [2024-10-31 22:17:48,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:17:48,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:17:48,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:17:48,217 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:17:48,218 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:17:48,220 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4b3fd-a84c-4972-9820-e56deff01c1f/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i Unable to find full path for "g++" [2024-10-31 22:17:50,463 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:17:50,697 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:17:50,698 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4b3fd-a84c-4972-9820-e56deff01c1f/sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i [2024-10-31 22:17:50,723 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4b3fd-a84c-4972-9820-e56deff01c1f/bin/uautomizer-verify-4GaUIPS5ZU/data/0cc3dcfa5/56c5c6159f3246a4a2bcc518c1c2f5db/FLAGf3115c9e8 [2024-10-31 22:17:51,036 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4b3fd-a84c-4972-9820-e56deff01c1f/bin/uautomizer-verify-4GaUIPS5ZU/data/0cc3dcfa5/56c5c6159f3246a4a2bcc518c1c2f5db [2024-10-31 22:17:51,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:17:51,040 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:17:51,041 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:17:51,042 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:17:51,051 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:17:51,051 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:17:51" (1/1) ... [2024-10-31 22:17:51,053 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ef082c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:51, skipping insertion in model container [2024-10-31 22:17:51,053 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:17:51" (1/1) ... [2024-10-31 22:17:51,116 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:17:51,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:17:51,629 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:17:51,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:17:51,731 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:17:51,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:51 WrapperNode [2024-10-31 22:17:51,732 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:17:51,733 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:17:51,734 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:17:51,734 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:17:51,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:51" (1/1) ... [2024-10-31 22:17:51,756 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:51" (1/1) ... [2024-10-31 22:17:51,783 INFO L138 Inliner]: procedures = 172, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 87 [2024-10-31 22:17:51,786 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:17:51,787 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:17:51,787 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:17:51,788 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:17:51,798 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:51" (1/1) ... [2024-10-31 22:17:51,799 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:51" (1/1) ... [2024-10-31 22:17:51,805 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:51" (1/1) ... [2024-10-31 22:17:51,825 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 2, 5, 5]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 5, 5]. The 1 writes are split as follows [0, 1, 0, 0]. [2024-10-31 22:17:51,826 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:51" (1/1) ... [2024-10-31 22:17:51,827 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:51" (1/1) ... [2024-10-31 22:17:51,840 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:51" (1/1) ... [2024-10-31 22:17:51,849 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:51" (1/1) ... [2024-10-31 22:17:51,851 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:51" (1/1) ... [2024-10-31 22:17:51,853 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:51" (1/1) ... [2024-10-31 22:17:51,856 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:17:51,857 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:17:51,857 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:17:51,857 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:17:51,858 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:51" (1/1) ... [2024-10-31 22:17:51,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:17:51,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4b3fd-a84c-4972-9820-e56deff01c1f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:51,903 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4b3fd-a84c-4972-9820-e56deff01c1f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:51,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4b3fd-a84c-4972-9820-e56deff01c1f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:17:51,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:17:51,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:17:51,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-31 22:17:51,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-31 22:17:51,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:17:51,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:17:51,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-31 22:17:51,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-31 22:17:51,938 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-31 22:17:51,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:17:51,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 22:17:51,939 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-31 22:17:51,939 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-31 22:17:51,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:17:51,939 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2024-10-31 22:17:51,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:17:51,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:17:51,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:17:51,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-31 22:17:51,940 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-31 22:17:51,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:17:51,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:17:51,942 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:17:52,100 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:17:52,103 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:17:52,374 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:17:52,374 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:17:52,586 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:17:52,586 INFO L316 CfgBuilder]: Removed 11 assume(true) statements. [2024-10-31 22:17:52,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:17:52 BoogieIcfgContainer [2024-10-31 22:17:52,587 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:17:52,590 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:17:52,590 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:17:52,594 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:17:52,595 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:17:51" (1/3) ... [2024-10-31 22:17:52,596 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cff013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:17:52, skipping insertion in model container [2024-10-31 22:17:52,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:51" (2/3) ... [2024-10-31 22:17:52,597 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cff013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:17:52, skipping insertion in model container [2024-10-31 22:17:52,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:17:52" (3/3) ... [2024-10-31 22:17:52,600 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_41-trylock_racefree.i [2024-10-31 22:17:52,622 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:17:52,622 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-31 22:17:52,622 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:17:52,682 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-31 22:17:52,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 62 transitions, 131 flow [2024-10-31 22:17:52,792 INFO L124 PetriNetUnfolderBase]: 15/79 cut-off events. [2024-10-31 22:17:52,792 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:17:52,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 79 events. 15/79 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 230 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 53. Up to 6 conditions per place. [2024-10-31 22:17:52,798 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 62 transitions, 131 flow [2024-10-31 22:17:52,803 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 61 transitions, 129 flow [2024-10-31 22:17:52,823 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:17:52,833 INFO L333 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, 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;@4fd6755c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:17:52,833 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-10-31 22:17:52,844 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:17:52,844 INFO L124 PetriNetUnfolderBase]: 2/13 cut-off events. [2024-10-31 22:17:52,844 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:17:52,844 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:52,845 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-31 22:17:52,846 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-31 22:17:52,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:52,852 INFO L85 PathProgramCache]: Analyzing trace with hash 334404439, now seen corresponding path program 1 times [2024-10-31 22:17:52,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:52,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687209713] [2024-10-31 22:17:52,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:52,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:53,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:53,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:53,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687209713] [2024-10-31 22:17:53,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687209713] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:53,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:53,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:17:53,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341632760] [2024-10-31 22:17:53,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:53,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:17:53,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:53,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:17:53,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:17:53,353 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 62 [2024-10-31 22:17:53,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 61 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2024-10-31 22:17:53,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:53,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 62 [2024-10-31 22:17:53,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:53,694 INFO L124 PetriNetUnfolderBase]: 155/386 cut-off events. [2024-10-31 22:17:53,695 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:17:53,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 718 conditions, 386 events. 155/386 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1792 event pairs, 22 based on Foata normal form. 80/427 useless extension candidates. Maximal degree in co-relation 690. Up to 290 conditions per place. [2024-10-31 22:17:53,704 INFO L140 encePairwiseOnDemand]: 47/62 looper letters, 48 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2024-10-31 22:17:53,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 73 transitions, 255 flow [2024-10-31 22:17:53,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:17:53,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:17:53,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 163 transitions. [2024-10-31 22:17:53,724 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.657258064516129 [2024-10-31 22:17:53,727 INFO L175 Difference]: Start difference. First operand has 54 places, 61 transitions, 129 flow. Second operand 4 states and 163 transitions. [2024-10-31 22:17:53,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 73 transitions, 255 flow [2024-10-31 22:17:53,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 73 transitions, 255 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:17:53,743 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 117 flow [2024-10-31 22:17:53,745 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2024-10-31 22:17:53,752 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-10-31 22:17:53,753 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 117 flow [2024-10-31 22:17:53,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2024-10-31 22:17:53,753 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:53,754 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:53,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:17:53,754 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-31 22:17:53,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:53,756 INFO L85 PathProgramCache]: Analyzing trace with hash -2081115366, now seen corresponding path program 1 times [2024-10-31 22:17:53,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:53,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721489301] [2024-10-31 22:17:53,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:53,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:53,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:53,811 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:17:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:53,862 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:17:53,862 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:17:53,865 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-10-31 22:17:53,867 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-10-31 22:17:53,867 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-10-31 22:17:53,868 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-10-31 22:17:53,869 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-10-31 22:17:53,869 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-10-31 22:17:53,869 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-10-31 22:17:53,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-10-31 22:17:53,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-10-31 22:17:53,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-10-31 22:17:53,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-10-31 22:17:53,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-10-31 22:17:53,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-10-31 22:17:53,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:17:53,874 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-31 22:17:53,880 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:17:53,880 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-31 22:17:53,932 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 22:17:53,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 95 transitions, 206 flow [2024-10-31 22:17:53,961 INFO L124 PetriNetUnfolderBase]: 27/148 cut-off events. [2024-10-31 22:17:53,961 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-31 22:17:53,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 148 events. 27/148 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 539 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 93. Up to 9 conditions per place. [2024-10-31 22:17:53,963 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 95 transitions, 206 flow [2024-10-31 22:17:53,965 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 95 transitions, 206 flow [2024-10-31 22:17:53,967 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:17:53,968 INFO L333 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, 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;@4fd6755c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:17:53,968 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-10-31 22:17:53,972 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:17:53,973 INFO L124 PetriNetUnfolderBase]: 2/13 cut-off events. [2024-10-31 22:17:53,973 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:17:53,973 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:53,973 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-31 22:17:53,973 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:17:53,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:53,974 INFO L85 PathProgramCache]: Analyzing trace with hash 425093205, now seen corresponding path program 1 times [2024-10-31 22:17:53,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:53,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099639842] [2024-10-31 22:17:53,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:53,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:54,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:54,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:54,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099639842] [2024-10-31 22:17:54,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099639842] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:54,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:54,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:17:54,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937929055] [2024-10-31 22:17:54,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:54,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:17:54,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:54,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:17:54,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:17:54,094 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 95 [2024-10-31 22:17:54,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 95 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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) [2024-10-31 22:17:54,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:54,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 95 [2024-10-31 22:17:54,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:55,562 INFO L124 PetriNetUnfolderBase]: 4459/9284 cut-off events. [2024-10-31 22:17:55,562 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2024-10-31 22:17:55,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16349 conditions, 9284 events. 4459/9284 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 76362 event pairs, 2024 based on Foata normal form. 1743/9961 useless extension candidates. Maximal degree in co-relation 1309. Up to 6961 conditions per place. [2024-10-31 22:17:55,630 INFO L140 encePairwiseOnDemand]: 74/95 looper letters, 66 selfloop transitions, 3 changer transitions 0/105 dead transitions. [2024-10-31 22:17:55,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 105 transitions, 364 flow [2024-10-31 22:17:55,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:17:55,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:17:55,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 243 transitions. [2024-10-31 22:17:55,634 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6394736842105263 [2024-10-31 22:17:55,636 INFO L175 Difference]: Start difference. First operand has 82 places, 95 transitions, 206 flow. Second operand 4 states and 243 transitions. [2024-10-31 22:17:55,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 105 transitions, 364 flow [2024-10-31 22:17:55,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 105 transitions, 364 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:17:55,642 INFO L231 Difference]: Finished difference. Result has 87 places, 82 transitions, 200 flow [2024-10-31 22:17:55,642 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=87, PETRI_TRANSITIONS=82} [2024-10-31 22:17:55,644 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 5 predicate places. [2024-10-31 22:17:55,644 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 82 transitions, 200 flow [2024-10-31 22:17:55,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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) [2024-10-31 22:17:55,645 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:55,645 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:55,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:17:55,646 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:17:55,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:55,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1396089131, now seen corresponding path program 1 times [2024-10-31 22:17:55,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:55,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487398924] [2024-10-31 22:17:55,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:55,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:55,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:55,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:55,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487398924] [2024-10-31 22:17:55,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487398924] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:55,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:55,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:17:55,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965526635] [2024-10-31 22:17:55,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:55,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:17:55,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:55,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:17:55,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:17:55,775 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 95 [2024-10-31 22:17:55,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 82 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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) [2024-10-31 22:17:55,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:55,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 95 [2024-10-31 22:17:55,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:57,669 INFO L124 PetriNetUnfolderBase]: 5885/12068 cut-off events. [2024-10-31 22:17:57,669 INFO L125 PetriNetUnfolderBase]: For 456/791 co-relation queries the response was YES. [2024-10-31 22:17:57,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21906 conditions, 12068 events. 5885/12068 cut-off events. For 456/791 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 102907 event pairs, 1542 based on Foata normal form. 232/11130 useless extension candidates. Maximal degree in co-relation 21805. Up to 6030 conditions per place. [2024-10-31 22:17:57,755 INFO L140 encePairwiseOnDemand]: 86/95 looper letters, 126 selfloop transitions, 12 changer transitions 0/176 dead transitions. [2024-10-31 22:17:57,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 176 transitions, 704 flow [2024-10-31 22:17:57,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:17:57,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:17:57,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 324 transitions. [2024-10-31 22:17:57,759 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6821052631578948 [2024-10-31 22:17:57,761 INFO L175 Difference]: Start difference. First operand has 87 places, 82 transitions, 200 flow. Second operand 5 states and 324 transitions. [2024-10-31 22:17:57,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 176 transitions, 704 flow [2024-10-31 22:17:57,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 176 transitions, 700 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:17:57,770 INFO L231 Difference]: Finished difference. Result has 94 places, 93 transitions, 292 flow [2024-10-31 22:17:57,770 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=292, PETRI_PLACES=94, PETRI_TRANSITIONS=93} [2024-10-31 22:17:57,771 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 12 predicate places. [2024-10-31 22:17:57,771 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 93 transitions, 292 flow [2024-10-31 22:17:57,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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) [2024-10-31 22:17:57,771 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:57,772 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:57,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:17:57,772 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:17:57,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:57,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1879242231, now seen corresponding path program 1 times [2024-10-31 22:17:57,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:57,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435620010] [2024-10-31 22:17:57,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:57,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:57,924 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:57,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:57,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435620010] [2024-10-31 22:17:57,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435620010] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:17:57,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309384618] [2024-10-31 22:17:57,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:57,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:17:57,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4b3fd-a84c-4972-9820-e56deff01c1f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:57,931 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4b3fd-a84c-4972-9820-e56deff01c1f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:17:57,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4b3fd-a84c-4972-9820-e56deff01c1f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:17:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:58,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:17:58,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:58,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:58,145 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:17:58,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309384618] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:58,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:17:58,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-31 22:17:58,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745353964] [2024-10-31 22:17:58,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:58,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:17:58,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:58,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:17:58,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:17:58,160 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 95 [2024-10-31 22:17:58,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 93 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 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) [2024-10-31 22:17:58,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:58,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 95 [2024-10-31 22:17:58,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:18:00,111 INFO L124 PetriNetUnfolderBase]: 5974/11901 cut-off events. [2024-10-31 22:18:00,113 INFO L125 PetriNetUnfolderBase]: For 4095/4102 co-relation queries the response was YES. [2024-10-31 22:18:00,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25167 conditions, 11901 events. 5974/11901 cut-off events. For 4095/4102 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 100740 event pairs, 1526 based on Foata normal form. 152/11016 useless extension candidates. Maximal degree in co-relation 16042. Up to 7417 conditions per place. [2024-10-31 22:18:00,192 INFO L140 encePairwiseOnDemand]: 90/95 looper letters, 127 selfloop transitions, 6 changer transitions 0/169 dead transitions. [2024-10-31 22:18:00,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 169 transitions, 792 flow [2024-10-31 22:18:00,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:18:00,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:18:00,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 329 transitions. [2024-10-31 22:18:00,195 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5771929824561404 [2024-10-31 22:18:00,196 INFO L175 Difference]: Start difference. First operand has 94 places, 93 transitions, 292 flow. Second operand 6 states and 329 transitions. [2024-10-31 22:18:00,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 169 transitions, 792 flow [2024-10-31 22:18:00,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 169 transitions, 792 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:18:00,208 INFO L231 Difference]: Finished difference. Result has 98 places, 92 transitions, 300 flow [2024-10-31 22:18:00,209 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=300, PETRI_PLACES=98, PETRI_TRANSITIONS=92} [2024-10-31 22:18:00,209 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 16 predicate places. [2024-10-31 22:18:00,210 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 92 transitions, 300 flow [2024-10-31 22:18:00,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 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) [2024-10-31 22:18:00,210 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:18:00,210 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-10-31 22:18:00,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4b3fd-a84c-4972-9820-e56deff01c1f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:18:00,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30d4b3fd-a84c-4972-9820-e56deff01c1f/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:00,411 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:18:00,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:00,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1873032515, now seen corresponding path program 1 times [2024-10-31 22:18:00,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:00,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183506153] [2024-10-31 22:18:00,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:00,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:00,482 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:18:00,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:00,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183506153] [2024-10-31 22:18:00,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183506153] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:00,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:18:00,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:18:00,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528314901] [2024-10-31 22:18:00,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:00,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:18:00,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:00,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:18:00,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:18:00,492 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 95 [2024-10-31 22:18:00,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 92 transitions, 300 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2024-10-31 22:18:00,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:18:00,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 95 [2024-10-31 22:18:00,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:18:01,974 INFO L124 PetriNetUnfolderBase]: 5705/11191 cut-off events. [2024-10-31 22:18:01,975 INFO L125 PetriNetUnfolderBase]: For 4512/4516 co-relation queries the response was YES. [2024-10-31 22:18:02,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24262 conditions, 11191 events. 5705/11191 cut-off events. For 4512/4516 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 92074 event pairs, 1138 based on Foata normal form. 152/10536 useless extension candidates. Maximal degree in co-relation 18616. Up to 7887 conditions per place. [2024-10-31 22:18:02,049 INFO L140 encePairwiseOnDemand]: 90/95 looper letters, 104 selfloop transitions, 6 changer transitions 0/146 dead transitions. [2024-10-31 22:18:02,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 146 transitions, 690 flow [2024-10-31 22:18:02,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:18:02,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:18:02,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 232 transitions. [2024-10-31 22:18:02,051 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6105263157894737 [2024-10-31 22:18:02,051 INFO L175 Difference]: Start difference. First operand has 98 places, 92 transitions, 300 flow. Second operand 4 states and 232 transitions. [2024-10-31 22:18:02,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 146 transitions, 690 flow [2024-10-31 22:18:02,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 146 transitions, 674 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-10-31 22:18:02,061 INFO L231 Difference]: Finished difference. Result has 96 places, 92 transitions, 300 flow [2024-10-31 22:18:02,061 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=300, PETRI_PLACES=96, PETRI_TRANSITIONS=92} [2024-10-31 22:18:02,062 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 14 predicate places. [2024-10-31 22:18:02,062 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 92 transitions, 300 flow [2024-10-31 22:18:02,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2024-10-31 22:18:02,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:18:02,063 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-10-31 22:18:02,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:18:02,063 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:18:02,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:02,064 INFO L85 PathProgramCache]: Analyzing trace with hash -392936168, now seen corresponding path program 1 times [2024-10-31 22:18:02,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:02,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312533908] [2024-10-31 22:18:02,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:02,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:18:02,081 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:18:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:18:02,094 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:18:02,095 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:18:02,095 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-10-31 22:18:02,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-10-31 22:18:02,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-10-31 22:18:02,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-10-31 22:18:02,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-10-31 22:18:02,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-10-31 22:18:02,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-10-31 22:18:02,097 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-10-31 22:18:02,097 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-10-31 22:18:02,097 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-10-31 22:18:02,097 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-10-31 22:18:02,097 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-10-31 22:18:02,098 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-10-31 22:18:02,098 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-10-31 22:18:02,098 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-10-31 22:18:02,098 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-10-31 22:18:02,099 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-10-31 22:18:02,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:18:02,099 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-31 22:18:02,100 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:18:02,100 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-31 22:18:02,130 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-31 22:18:02,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 128 transitions, 283 flow [2024-10-31 22:18:02,158 INFO L124 PetriNetUnfolderBase]: 42/236 cut-off events. [2024-10-31 22:18:02,158 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-31 22:18:02,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 236 events. 42/236 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 941 event pairs, 1 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 163. Up to 12 conditions per place. [2024-10-31 22:18:02,160 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 128 transitions, 283 flow [2024-10-31 22:18:02,163 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 128 transitions, 283 flow [2024-10-31 22:18:02,164 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:18:02,164 INFO L333 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, 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;@4fd6755c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:18:02,165 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-10-31 22:18:02,167 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:18:02,167 INFO L124 PetriNetUnfolderBase]: 2/13 cut-off events. [2024-10-31 22:18:02,167 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:18:02,168 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:18:02,168 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-31 22:18:02,168 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-31 22:18:02,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:02,169 INFO L85 PathProgramCache]: Analyzing trace with hash 547274036, now seen corresponding path program 1 times [2024-10-31 22:18:02,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:02,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419294228] [2024-10-31 22:18:02,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:02,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:02,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:18:02,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:02,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419294228] [2024-10-31 22:18:02,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419294228] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:02,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:18:02,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:18:02,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21395629] [2024-10-31 22:18:02,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:02,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:18:02,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:02,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:18:02,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:18:02,221 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 128 [2024-10-31 22:18:02,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 128 transitions, 283 flow. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:18:02,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:18:02,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 128 [2024-10-31 22:18:02,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:18:18,032 INFO L124 PetriNetUnfolderBase]: 83236/148816 cut-off events. [2024-10-31 22:18:18,032 INFO L125 PetriNetUnfolderBase]: For 1879/1879 co-relation queries the response was YES. [2024-10-31 22:18:18,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264708 conditions, 148816 events. 83236/148816 cut-off events. For 1879/1879 co-relation queries the response was YES. Maximal size of possible extension queue 3340. Compared 1549260 event pairs, 52900 based on Foata normal form. 31272/165206 useless extension candidates. Maximal degree in co-relation 17247. Up to 114730 conditions per place. [2024-10-31 22:18:19,029 INFO L140 encePairwiseOnDemand]: 101/128 looper letters, 79 selfloop transitions, 3 changer transitions 0/132 dead transitions. [2024-10-31 22:18:19,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 132 transitions, 455 flow [2024-10-31 22:18:19,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:18:19,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:18:19,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 318 transitions. [2024-10-31 22:18:19,032 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.62109375 [2024-10-31 22:18:19,032 INFO L175 Difference]: Start difference. First operand has 110 places, 128 transitions, 283 flow. Second operand 4 states and 318 transitions. [2024-10-31 22:18:19,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 132 transitions, 455 flow [2024-10-31 22:18:19,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 132 transitions, 455 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:18:19,038 INFO L231 Difference]: Finished difference. Result has 115 places, 109 transitions, 265 flow [2024-10-31 22:18:19,039 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=265, PETRI_PLACES=115, PETRI_TRANSITIONS=109} [2024-10-31 22:18:19,040 INFO L277 CegarLoopForPetriNet]: 110 programPoint places, 5 predicate places. [2024-10-31 22:18:19,042 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 109 transitions, 265 flow [2024-10-31 22:18:19,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:18:19,042 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:18:19,042 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:19,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:18:19,043 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-31 22:18:19,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:19,043 INFO L85 PathProgramCache]: Analyzing trace with hash 175881940, now seen corresponding path program 1 times [2024-10-31 22:18:19,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:19,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027881441] [2024-10-31 22:18:19,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:19,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:19,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:18:19,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:19,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027881441] [2024-10-31 22:18:19,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027881441] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:19,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:18:19,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:18:19,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518933768] [2024-10-31 22:18:19,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:19,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:18:19,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:19,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:18:19,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:18:19,135 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 128 [2024-10-31 22:18:19,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 109 transitions, 265 flow. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:18:19,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:18:19,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 128 [2024-10-31 22:18:19,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand