./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-theta/unwind1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 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_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-theta/unwind1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX --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 369675afdce9f24a16d648c2af0379dafe84b15f75fb11d38697f731d0b5b69e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:47:23,568 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:47:23,700 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-08 16:47:23,707 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:47:23,708 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:47:23,751 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:47:23,752 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:47:23,753 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:47:23,754 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:47:23,757 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:47:23,757 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:47:23,758 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:47:23,759 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:47:23,762 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:47:23,762 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:47:23,763 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:47:23,763 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:47:23,764 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:47:23,764 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:47:23,764 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:47:23,765 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:47:23,769 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:47:23,769 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:47:23,769 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:47:23,770 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:47:23,770 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 16:47:23,770 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 16:47:23,770 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:47:23,771 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:47:23,771 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:47:23,771 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:47:23,772 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:47:23,772 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:47:23,772 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:47:23,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:47:23,773 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:47:23,773 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:47:23,774 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:47:23,774 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:47:23,774 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:47:23,775 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:47:23,777 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:47:23,778 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:47:23,778 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:47:23,779 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_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 369675afdce9f24a16d648c2af0379dafe84b15f75fb11d38697f731d0b5b69e [2024-11-08 16:47:24,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:47:24,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:47:24,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:47:24,137 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:47:24,138 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:47:24,140 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/pthread-theta/unwind1-1.i Unable to find full path for "g++" [2024-11-08 16:47:26,561 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:47:26,863 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:47:26,864 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/sv-benchmarks/c/pthread-theta/unwind1-1.i [2024-11-08 16:47:26,892 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/data/225173f8b/e1c6dd3c604a47a8a4b3f70e686a1131/FLAG2aa6fb01f [2024-11-08 16:47:26,914 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/data/225173f8b/e1c6dd3c604a47a8a4b3f70e686a1131 [2024-11-08 16:47:26,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:47:26,920 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:47:26,922 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:47:26,922 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:47:26,934 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:47:26,935 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:47:26" (1/1) ... [2024-11-08 16:47:26,936 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d13be40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:47:26, skipping insertion in model container [2024-11-08 16:47:26,936 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:47:26" (1/1) ... [2024-11-08 16:47:27,001 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:47:27,616 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:47:27,630 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:47:27,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:47:27,793 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:47:27,794 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:47:27 WrapperNode [2024-11-08 16:47:27,794 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:47:27,796 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:47:27,797 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:47:27,800 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:47:27,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:47:27" (1/1) ... [2024-11-08 16:47:27,831 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:47:27" (1/1) ... [2024-11-08 16:47:27,858 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 57 [2024-11-08 16:47:27,858 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:47:27,859 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:47:27,860 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:47:27,860 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:47:27,875 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:47:27" (1/1) ... [2024-11-08 16:47:27,875 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:47:27" (1/1) ... [2024-11-08 16:47:27,883 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:47:27" (1/1) ... [2024-11-08 16:47:27,914 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 16:47:27,915 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:47:27" (1/1) ... [2024-11-08 16:47:27,915 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:47:27" (1/1) ... [2024-11-08 16:47:27,927 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:47:27" (1/1) ... [2024-11-08 16:47:27,935 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:47:27" (1/1) ... [2024-11-08 16:47:27,940 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:47:27" (1/1) ... [2024-11-08 16:47:27,942 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:47:27" (1/1) ... [2024-11-08 16:47:27,947 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:47:27,948 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:47:27,949 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:47:27,949 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:47:27,955 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:47:27" (1/1) ... [2024-11-08 16:47:27,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:47:27,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:47:28,003 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:47:28,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:47:28,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:47:28,049 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-08 16:47:28,049 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-08 16:47:28,049 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-08 16:47:28,050 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-08 16:47:28,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:47:28,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:47:28,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:47:28,054 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 16:47:28,288 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:47:28,291 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:47:28,566 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 16:47:28,567 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:47:28,734 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:47:28,735 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 16:47:28,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:47:28 BoogieIcfgContainer [2024-11-08 16:47:28,736 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:47:28,739 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:47:28,740 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:47:28,744 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:47:28,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:47:26" (1/3) ... [2024-11-08 16:47:28,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@207606ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:47:28, skipping insertion in model container [2024-11-08 16:47:28,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:47:27" (2/3) ... [2024-11-08 16:47:28,747 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@207606ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:47:28, skipping insertion in model container [2024-11-08 16:47:28,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:47:28" (3/3) ... [2024-11-08 16:47:28,749 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind1-1.i [2024-11-08 16:47:28,774 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:47:28,774 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-08 16:47:28,774 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 16:47:28,847 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-08 16:47:28,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 30 transitions, 74 flow [2024-11-08 16:47:28,953 INFO L124 PetriNetUnfolderBase]: 3/28 cut-off events. [2024-11-08 16:47:28,953 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 16:47:28,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 28 events. 3/28 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 55 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2024-11-08 16:47:28,957 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 30 transitions, 74 flow [2024-11-08 16:47:28,961 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 26 transitions, 61 flow [2024-11-08 16:47:28,976 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:47:28,985 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;@59702990, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:47:28,986 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-08 16:47:28,999 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:47:29,001 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-11-08 16:47:29,001 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 16:47:29,002 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:47:29,003 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-08 16:47:29,004 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-11-08 16:47:29,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:47:29,013 INFO L85 PathProgramCache]: Analyzing trace with hash 215496237, now seen corresponding path program 1 times [2024-11-08 16:47:29,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:47:29,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808156639] [2024-11-08 16:47:29,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:47:29,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:47:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:47:29,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:47:29,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:47:29,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808156639] [2024-11-08 16:47:29,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808156639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:47:29,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:47:29,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 16:47:29,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541266871] [2024-11-08 16:47:29,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:47:29,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:47:29,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:47:29,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:47:29,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:47:29,563 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-11-08 16:47:29,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-08 16:47:29,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:47:29,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-11-08 16:47:29,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:47:29,718 INFO L124 PetriNetUnfolderBase]: 93/224 cut-off events. [2024-11-08 16:47:29,718 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-08 16:47:29,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 224 events. 93/224 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1019 event pairs, 66 based on Foata normal form. 10/198 useless extension candidates. Maximal degree in co-relation 360. Up to 144 conditions per place. [2024-11-08 16:47:29,724 INFO L140 encePairwiseOnDemand]: 28/30 looper letters, 14 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2024-11-08 16:47:29,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 25 transitions, 89 flow [2024-11-08 16:47:29,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:47:29,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:47:29,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-11-08 16:47:29,742 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-11-08 16:47:29,744 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 61 flow. Second operand 3 states and 52 transitions. [2024-11-08 16:47:29,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 25 transitions, 89 flow [2024-11-08 16:47:29,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 25 transitions, 84 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 16:47:29,750 INFO L231 Difference]: Finished difference. Result has 28 places, 25 transitions, 56 flow [2024-11-08 16:47:29,752 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=28, PETRI_TRANSITIONS=25} [2024-11-08 16:47:29,756 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2024-11-08 16:47:29,757 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 25 transitions, 56 flow [2024-11-08 16:47:29,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-08 16:47:29,757 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:47:29,757 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-08 16:47:29,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:47:29,758 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-11-08 16:47:29,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:47:29,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1909551009, now seen corresponding path program 1 times [2024-11-08 16:47:29,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:47:29,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040692292] [2024-11-08 16:47:29,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:47:29,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:47:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:47:29,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:47:29,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:47:29,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040692292] [2024-11-08 16:47:29,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040692292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:47:29,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:47:29,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 16:47:29,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456937986] [2024-11-08 16:47:29,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:47:29,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:47:29,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:47:29,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:47:29,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:47:29,894 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-11-08 16:47:29,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-08 16:47:29,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:47:29,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-11-08 16:47:29,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:47:30,013 INFO L124 PetriNetUnfolderBase]: 77/188 cut-off events. [2024-11-08 16:47:30,014 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 16:47:30,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 188 events. 77/188 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 799 event pairs, 54 based on Foata normal form. 9/166 useless extension candidates. Maximal degree in co-relation 317. Up to 120 conditions per place. [2024-11-08 16:47:30,017 INFO L140 encePairwiseOnDemand]: 28/30 looper letters, 13 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2024-11-08 16:47:30,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 24 transitions, 82 flow [2024-11-08 16:47:30,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:47:30,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:47:30,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-11-08 16:47:30,023 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-11-08 16:47:30,023 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 56 flow. Second operand 3 states and 51 transitions. [2024-11-08 16:47:30,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 24 transitions, 82 flow [2024-11-08 16:47:30,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 24 transitions, 81 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:47:30,025 INFO L231 Difference]: Finished difference. Result has 28 places, 24 transitions, 55 flow [2024-11-08 16:47:30,025 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=55, PETRI_PLACES=28, PETRI_TRANSITIONS=24} [2024-11-08 16:47:30,027 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2024-11-08 16:47:30,028 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 24 transitions, 55 flow [2024-11-08 16:47:30,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-08 16:47:30,028 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:47:30,028 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:47:30,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:47:30,030 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-11-08 16:47:30,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:47:30,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1224293385, now seen corresponding path program 1 times [2024-11-08 16:47:30,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:47:30,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680474713] [2024-11-08 16:47:30,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:47:30,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:47:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:47:30,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:47:30,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:47:30,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680474713] [2024-11-08 16:47:30,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680474713] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:47:30,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:47:30,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:47:30,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325887206] [2024-11-08 16:47:30,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:47:30,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:47:30,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:47:30,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:47:30,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:47:30,351 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-11-08 16:47:30,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions, 55 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-11-08 16:47:30,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:47:30,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-11-08 16:47:30,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:47:30,521 INFO L124 PetriNetUnfolderBase]: 81/184 cut-off events. [2024-11-08 16:47:30,521 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-08 16:47:30,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 184 events. 81/184 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 685 event pairs, 21 based on Foata normal form. 13/182 useless extension candidates. Maximal degree in co-relation 344. Up to 65 conditions per place. [2024-11-08 16:47:30,526 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 16 selfloop transitions, 3 changer transitions 13/39 dead transitions. [2024-11-08 16:47:30,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 39 transitions, 152 flow [2024-11-08 16:47:30,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:47:30,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 16:47:30,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-11-08 16:47:30,535 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5933333333333334 [2024-11-08 16:47:30,536 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 55 flow. Second operand 5 states and 89 transitions. [2024-11-08 16:47:30,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 39 transitions, 152 flow [2024-11-08 16:47:30,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 39 transitions, 151 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:47:30,540 INFO L231 Difference]: Finished difference. Result has 34 places, 23 transitions, 67 flow [2024-11-08 16:47:30,541 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=67, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2024-11-08 16:47:30,545 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-11-08 16:47:30,546 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 67 flow [2024-11-08 16:47:30,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-11-08 16:47:30,546 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:47:30,546 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:47:30,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:47:30,548 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-11-08 16:47:30,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:47:30,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1526587873, now seen corresponding path program 1 times [2024-11-08 16:47:30,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:47:30,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563879277] [2024-11-08 16:47:30,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:47:30,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:47:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:47:30,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:47:30,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:47:30,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563879277] [2024-11-08 16:47:30,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563879277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:47:30,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:47:30,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:47:30,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740546103] [2024-11-08 16:47:30,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:47:30,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:47:30,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:47:30,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:47:30,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:47:30,720 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-11-08 16:47:30,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2024-11-08 16:47:30,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:47:30,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-11-08 16:47:30,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:47:30,842 INFO L124 PetriNetUnfolderBase]: 58/143 cut-off events. [2024-11-08 16:47:30,842 INFO L125 PetriNetUnfolderBase]: For 19/20 co-relation queries the response was YES. [2024-11-08 16:47:30,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 143 events. 58/143 cut-off events. For 19/20 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 422 event pairs, 32 based on Foata normal form. 5/137 useless extension candidates. Maximal degree in co-relation 282. Up to 80 conditions per place. [2024-11-08 16:47:30,845 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 20 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-11-08 16:47:30,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 131 flow [2024-11-08 16:47:30,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:47:30,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:47:30,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-11-08 16:47:30,847 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6083333333333333 [2024-11-08 16:47:30,847 INFO L175 Difference]: Start difference. First operand has 34 places, 23 transitions, 67 flow. Second operand 4 states and 73 transitions. [2024-11-08 16:47:30,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 131 flow [2024-11-08 16:47:30,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 121 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-08 16:47:30,850 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 79 flow [2024-11-08 16:47:30,850 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=79, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2024-11-08 16:47:30,851 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2024-11-08 16:47:30,851 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 79 flow [2024-11-08 16:47:30,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2024-11-08 16:47:30,852 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:47:30,852 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:47:30,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:47:30,853 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-11-08 16:47:30,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:47:30,854 INFO L85 PathProgramCache]: Analyzing trace with hash 66843740, now seen corresponding path program 1 times [2024-11-08 16:47:30,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:47:30,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977655071] [2024-11-08 16:47:30,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:47:30,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:47:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:47:31,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:47:31,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:47:31,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977655071] [2024-11-08 16:47:31,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977655071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:47:31,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265624108] [2024-11-08 16:47:31,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:47:31,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:47:31,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:47:31,072 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:47:31,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:47:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:47:31,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 16:47:31,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:47:31,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:47:31,400 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:47:31,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265624108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:47:31,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:47:31,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 11 [2024-11-08 16:47:31,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751023292] [2024-11-08 16:47:31,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:47:31,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:47:31,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:47:31,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:47:31,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:47:31,524 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-11-08 16:47:31,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 79 flow. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2024-11-08 16:47:31,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:47:31,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-11-08 16:47:31,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:47:31,773 INFO L124 PetriNetUnfolderBase]: 100/233 cut-off events. [2024-11-08 16:47:31,773 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-11-08 16:47:31,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 527 conditions, 233 events. 100/233 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 764 event pairs, 39 based on Foata normal form. 5/227 useless extension candidates. Maximal degree in co-relation 517. Up to 100 conditions per place. [2024-11-08 16:47:31,776 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 19 selfloop transitions, 2 changer transitions 17/43 dead transitions. [2024-11-08 16:47:31,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 43 transitions, 209 flow [2024-11-08 16:47:31,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 16:47:31,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 16:47:31,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-11-08 16:47:31,779 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-11-08 16:47:31,779 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 79 flow. Second operand 7 states and 86 transitions. [2024-11-08 16:47:31,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 43 transitions, 209 flow [2024-11-08 16:47:31,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 205 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:47:31,784 INFO L231 Difference]: Finished difference. Result has 41 places, 23 transitions, 86 flow [2024-11-08 16:47:31,785 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=86, PETRI_PLACES=41, PETRI_TRANSITIONS=23} [2024-11-08 16:47:31,786 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 11 predicate places. [2024-11-08 16:47:31,786 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 23 transitions, 86 flow [2024-11-08 16:47:31,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2024-11-08 16:47:31,788 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:47:31,789 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:47:31,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 16:47:31,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:47:31,994 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-11-08 16:47:31,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:47:31,996 INFO L85 PathProgramCache]: Analyzing trace with hash -56954234, now seen corresponding path program 1 times [2024-11-08 16:47:31,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:47:31,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751582494] [2024-11-08 16:47:31,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:47:31,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:47:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:47:32,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:47:32,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:47:32,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751582494] [2024-11-08 16:47:32,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751582494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:47:32,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772494977] [2024-11-08 16:47:32,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:47:32,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:47:32,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:47:32,145 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:47:32,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 16:47:32,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:47:32,254 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 16:47:32,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:47:32,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:47:32,308 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:47:32,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772494977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:47:32,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:47:32,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-08 16:47:32,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616044157] [2024-11-08 16:47:32,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:47:32,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:47:32,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:47:32,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:47:32,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:47:32,356 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-11-08 16:47:32,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 23 transitions, 86 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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) [2024-11-08 16:47:32,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:47:32,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-11-08 16:47:32,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:47:32,508 INFO L124 PetriNetUnfolderBase]: 49/128 cut-off events. [2024-11-08 16:47:32,509 INFO L125 PetriNetUnfolderBase]: For 82/83 co-relation queries the response was YES. [2024-11-08 16:47:32,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 128 events. 49/128 cut-off events. For 82/83 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 331 event pairs, 9 based on Foata normal form. 5/125 useless extension candidates. Maximal degree in co-relation 288. Up to 28 conditions per place. [2024-11-08 16:47:32,510 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 22 selfloop transitions, 5 changer transitions 0/34 dead transitions. [2024-11-08 16:47:32,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 164 flow [2024-11-08 16:47:32,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:47:32,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:47:32,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-11-08 16:47:32,515 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-08 16:47:32,515 INFO L175 Difference]: Start difference. First operand has 41 places, 23 transitions, 86 flow. Second operand 6 states and 100 transitions. [2024-11-08 16:47:32,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 164 flow [2024-11-08 16:47:32,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 34 transitions, 151 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-11-08 16:47:32,520 INFO L231 Difference]: Finished difference. Result has 35 places, 22 transitions, 79 flow [2024-11-08 16:47:32,520 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=79, PETRI_PLACES=35, PETRI_TRANSITIONS=22} [2024-11-08 16:47:32,521 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2024-11-08 16:47:32,523 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 22 transitions, 79 flow [2024-11-08 16:47:32,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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) [2024-11-08 16:47:32,524 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:47:32,524 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:47:32,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 16:47:32,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-08 16:47:32,729 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-11-08 16:47:32,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:47:32,730 INFO L85 PathProgramCache]: Analyzing trace with hash -666778793, now seen corresponding path program 1 times [2024-11-08 16:47:32,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:47:32,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878251661] [2024-11-08 16:47:32,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:47:32,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:47:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:47:32,844 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:47:32,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:47:32,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878251661] [2024-11-08 16:47:32,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878251661] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:47:32,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407974756] [2024-11-08 16:47:32,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:47:32,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:47:32,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:47:32,848 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:47:32,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 16:47:32,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:47:32,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 16:47:32,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:47:32,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:47:32,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:47:33,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:47:33,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407974756] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:47:33,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:47:33,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-08 16:47:33,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233067778] [2024-11-08 16:47:33,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:47:33,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 16:47:33,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:47:33,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 16:47:33,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-08 16:47:33,188 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-11-08 16:47:33,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 22 transitions, 79 flow. Second operand has 12 states, 12 states have (on average 13.583333333333334) internal successors, (163), 12 states have internal predecessors, (163), 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) [2024-11-08 16:47:33,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:47:33,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-11-08 16:47:33,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:47:33,400 INFO L124 PetriNetUnfolderBase]: 92/240 cut-off events. [2024-11-08 16:47:33,400 INFO L125 PetriNetUnfolderBase]: For 226/227 co-relation queries the response was YES. [2024-11-08 16:47:33,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 240 events. 92/240 cut-off events. For 226/227 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 679 event pairs, 24 based on Foata normal form. 15/224 useless extension candidates. Maximal degree in co-relation 518. Up to 63 conditions per place. [2024-11-08 16:47:33,403 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 36 selfloop transitions, 9 changer transitions 0/52 dead transitions. [2024-11-08 16:47:33,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 52 transitions, 261 flow [2024-11-08 16:47:33,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 16:47:33,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 16:47:33,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-11-08 16:47:33,405 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-11-08 16:47:33,405 INFO L175 Difference]: Start difference. First operand has 35 places, 22 transitions, 79 flow. Second operand 10 states and 168 transitions. [2024-11-08 16:47:33,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 52 transitions, 261 flow [2024-11-08 16:47:33,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 52 transitions, 246 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-08 16:47:33,408 INFO L231 Difference]: Finished difference. Result has 43 places, 28 transitions, 134 flow [2024-11-08 16:47:33,408 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=134, PETRI_PLACES=43, PETRI_TRANSITIONS=28} [2024-11-08 16:47:33,409 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2024-11-08 16:47:33,409 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 28 transitions, 134 flow [2024-11-08 16:47:33,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.583333333333334) internal successors, (163), 12 states have internal predecessors, (163), 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) [2024-11-08 16:47:33,410 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:47:33,410 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:47:33,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 16:47:33,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-08 16:47:33,611 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-11-08 16:47:33,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:47:33,612 INFO L85 PathProgramCache]: Analyzing trace with hash 149856518, now seen corresponding path program 2 times [2024-11-08 16:47:33,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:47:33,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286752113] [2024-11-08 16:47:33,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:47:33,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:47:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:47:33,819 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 16:47:33,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:47:33,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286752113] [2024-11-08 16:47:33,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286752113] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:47:33,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610658959] [2024-11-08 16:47:33,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:47:33,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:47:33,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:47:33,824 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:47:33,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 16:47:33,919 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 16:47:33,919 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:47:33,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 16:47:33,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:47:34,024 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 16:47:34,024 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:47:34,173 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 16:47:34,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610658959] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:47:34,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:47:34,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-08 16:47:34,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965005552] [2024-11-08 16:47:34,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:47:34,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 16:47:34,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:47:34,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 16:47:34,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-08 16:47:34,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-11-08 16:47:34,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 28 transitions, 134 flow. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 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) [2024-11-08 16:47:34,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:47:34,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-11-08 16:47:34,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:47:34,474 INFO L124 PetriNetUnfolderBase]: 145/318 cut-off events. [2024-11-08 16:47:34,474 INFO L125 PetriNetUnfolderBase]: For 285/285 co-relation queries the response was YES. [2024-11-08 16:47:34,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 795 conditions, 318 events. 145/318 cut-off events. For 285/285 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 904 event pairs, 15 based on Foata normal form. 5/297 useless extension candidates. Maximal degree in co-relation 783. Up to 115 conditions per place. [2024-11-08 16:47:34,481 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2024-11-08 16:47:34,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 38 transitions, 221 flow [2024-11-08 16:47:34,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:47:34,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:47:34,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 53 transitions. [2024-11-08 16:47:34,483 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29444444444444445 [2024-11-08 16:47:34,483 INFO L175 Difference]: Start difference. First operand has 43 places, 28 transitions, 134 flow. Second operand 6 states and 53 transitions. [2024-11-08 16:47:34,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 38 transitions, 221 flow [2024-11-08 16:47:34,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 38 transitions, 201 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-11-08 16:47:34,489 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2024-11-08 16:47:34,490 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2024-11-08 16:47:34,490 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 11 predicate places. [2024-11-08 16:47:34,491 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2024-11-08 16:47:34,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 12 states have internal predecessors, (78), 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) [2024-11-08 16:47:34,497 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-08 16:47:34,498 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 10 remaining) [2024-11-08 16:47:34,498 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2024-11-08 16:47:34,498 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2024-11-08 16:47:34,499 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2024-11-08 16:47:34,499 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2024-11-08 16:47:34,499 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2024-11-08 16:47:34,500 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2024-11-08 16:47:34,500 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2024-11-08 16:47:34,501 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2024-11-08 16:47:34,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 16:47:34,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:47:34,702 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2024-11-08 16:47:34,707 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-08 16:47:34,708 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 16:47:34,714 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 04:47:34 BasicIcfg [2024-11-08 16:47:34,714 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 16:47:34,715 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 16:47:34,715 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 16:47:34,716 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 16:47:34,716 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:47:28" (3/4) ... [2024-11-08 16:47:34,719 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-08 16:47:34,723 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure f1 [2024-11-08 16:47:34,723 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure f2 [2024-11-08 16:47:34,728 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 32 nodes and edges [2024-11-08 16:47:34,728 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-08 16:47:34,728 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-08 16:47:34,728 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-08 16:47:34,844 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/witness.graphml [2024-11-08 16:47:34,844 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/witness.yml [2024-11-08 16:47:34,845 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 16:47:34,846 INFO L158 Benchmark]: Toolchain (without parser) took 7925.97ms. Allocated memory is still 190.8MB. Free memory was 146.6MB in the beginning and 84.2MB in the end (delta: 62.4MB). Peak memory consumption was 63.4MB. Max. memory is 16.1GB. [2024-11-08 16:47:34,846 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 130.0MB. Free memory is still 75.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 16:47:34,847 INFO L158 Benchmark]: CACSL2BoogieTranslator took 873.31ms. Allocated memory is still 190.8MB. Free memory was 146.6MB in the beginning and 123.5MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-08 16:47:34,847 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.24ms. Allocated memory is still 190.8MB. Free memory was 123.5MB in the beginning and 121.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 16:47:34,848 INFO L158 Benchmark]: Boogie Preprocessor took 88.10ms. Allocated memory is still 190.8MB. Free memory was 121.9MB in the beginning and 119.8MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 16:47:34,848 INFO L158 Benchmark]: RCFGBuilder took 787.61ms. Allocated memory is still 190.8MB. Free memory was 119.8MB in the beginning and 99.4MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-08 16:47:34,849 INFO L158 Benchmark]: TraceAbstraction took 5975.24ms. Allocated memory is still 190.8MB. Free memory was 98.9MB in the beginning and 88.4MB in the end (delta: 10.5MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. [2024-11-08 16:47:34,849 INFO L158 Benchmark]: Witness Printer took 129.53ms. Allocated memory is still 190.8MB. Free memory was 88.4MB in the beginning and 84.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 16:47:34,852 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 130.0MB. Free memory is still 75.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 873.31ms. Allocated memory is still 190.8MB. Free memory was 146.6MB in the beginning and 123.5MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.24ms. Allocated memory is still 190.8MB. Free memory was 123.5MB in the beginning and 121.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 88.10ms. Allocated memory is still 190.8MB. Free memory was 121.9MB in the beginning and 119.8MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 787.61ms. Allocated memory is still 190.8MB. Free memory was 119.8MB in the beginning and 99.4MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 5975.24ms. Allocated memory is still 190.8MB. Free memory was 98.9MB in the beginning and 88.4MB in the end (delta: 10.5MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. * Witness Printer took 129.53ms. Allocated memory is still 190.8MB. Free memory was 88.4MB in the beginning and 84.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 760]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 760]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 49 locations, 10 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.8s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 452 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 363 mSDsluCounter, 259 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 234 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 805 IncrementalHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 25 mSDtfsCounter, 805 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 167 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=7, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 190 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 224 ConstructedInterpolants, 0 QuantifiedInterpolants, 570 SizeOfPredicates, 14 NumberOfNonLiveVariables, 331 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 90/144 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-08 16:47:34,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6bdeae4-71e2-4226-8c5d-6f7e03fbf1c0/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE