./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/unroll-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/unroll-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya --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 8c7125507f231f46c946ebcd57e8b56859ee58b969eed99ccdbcf88141d9e219 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:23:27,704 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:23:27,786 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 03:23:27,792 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:23:27,793 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:23:27,823 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:23:27,824 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:23:27,824 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:23:27,825 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:23:27,826 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:23:27,826 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:23:27,827 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:23:27,828 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:23:27,829 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:23:27,829 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:23:27,830 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:23:27,830 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:23:27,831 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:23:27,832 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:23:27,832 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:23:27,833 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:23:27,834 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:23:27,834 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:23:27,835 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:23:27,835 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 03:23:27,836 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 03:23:27,836 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:23:27,837 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:23:27,837 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:23:27,838 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:23:27,838 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:23:27,839 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:23:27,839 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:23:27,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:23:27,840 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:23:27,840 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:23:27,840 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:23:27,841 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:23:27,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:23:27,841 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:23:27,841 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:23:27,842 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:23:27,842 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:23:27,842 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:23:27,843 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_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c7125507f231f46c946ebcd57e8b56859ee58b969eed99ccdbcf88141d9e219 [2023-11-29 03:23:28,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:23:28,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:23:28,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:23:28,119 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:23:28,119 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:23:28,121 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/unroll-2.wvr.c [2023-11-29 03:23:31,483 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:23:31,710 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:23:31,711 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/sv-benchmarks/c/weaver/unroll-2.wvr.c [2023-11-29 03:23:31,722 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya/data/4b246a4bf/e3ff3e84a63648e3a491715f00cf85d3/FLAG0d7c16315 [2023-11-29 03:23:31,742 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya/data/4b246a4bf/e3ff3e84a63648e3a491715f00cf85d3 [2023-11-29 03:23:31,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:23:31,747 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:23:31,749 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:23:31,749 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:23:31,756 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:23:31,757 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:23:31" (1/1) ... [2023-11-29 03:23:31,758 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2facc77a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:31, skipping insertion in model container [2023-11-29 03:23:31,759 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:23:31" (1/1) ... [2023-11-29 03:23:31,792 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:23:32,004 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:23:32,017 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:23:32,048 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:23:32,066 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:23:32,067 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:32 WrapperNode [2023-11-29 03:23:32,067 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:23:32,068 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:23:32,068 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:23:32,069 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:23:32,077 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:32" (1/1) ... [2023-11-29 03:23:32,085 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:32" (1/1) ... [2023-11-29 03:23:32,113 INFO L138 Inliner]: procedures = 24, calls = 33, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 143 [2023-11-29 03:23:32,113 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:23:32,114 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:23:32,114 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:23:32,114 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:23:32,125 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:32" (1/1) ... [2023-11-29 03:23:32,126 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:32" (1/1) ... [2023-11-29 03:23:32,129 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:32" (1/1) ... [2023-11-29 03:23:32,147 INFO L175 MemorySlicer]: Split 10 memory accesses to 4 slices as follows [4, 2, 2, 2]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2, 0, 0]. The 3 writes are split as follows [1, 0, 1, 1]. [2023-11-29 03:23:32,147 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:32" (1/1) ... [2023-11-29 03:23:32,147 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:32" (1/1) ... [2023-11-29 03:23:32,155 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:32" (1/1) ... [2023-11-29 03:23:32,159 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:32" (1/1) ... [2023-11-29 03:23:32,161 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:32" (1/1) ... [2023-11-29 03:23:32,163 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:32" (1/1) ... [2023-11-29 03:23:32,166 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:23:32,167 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:23:32,167 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:23:32,167 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:23:32,168 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:32" (1/1) ... [2023-11-29 03:23:32,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:23:32,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:23:32,198 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:23:32,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:23:32,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:23:32,236 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 03:23:32,236 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 03:23:32,236 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 03:23:32,237 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 03:23:32,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:23:32,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 03:23:32,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 03:23:32,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 03:23:32,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 03:23:32,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 03:23:32,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 03:23:32,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 03:23:32,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 03:23:32,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 03:23:32,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:23:32,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:23:32,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 03:23:32,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 03:23:32,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 03:23:32,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 03:23:32,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 03:23:32,242 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 03:23:32,374 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:23:32,376 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:23:32,684 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:23:32,955 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:23:32,955 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 03:23:32,955 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:23:32 BoogieIcfgContainer [2023-11-29 03:23:32,956 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:23:32,958 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:23:32,959 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:23:32,962 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:23:32,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:23:31" (1/3) ... [2023-11-29 03:23:32,963 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c28b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:23:32, skipping insertion in model container [2023-11-29 03:23:32,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:23:32" (2/3) ... [2023-11-29 03:23:32,963 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c28b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:23:32, skipping insertion in model container [2023-11-29 03:23:32,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:23:32" (3/3) ... [2023-11-29 03:23:32,965 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-2.wvr.c [2023-11-29 03:23:32,974 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 03:23:32,983 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:23:32,983 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 03:23:32,983 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 03:23:33,030 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 03:23:33,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 23 transitions, 60 flow [2023-11-29 03:23:33,093 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2023-11-29 03:23:33,094 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 03:23:33,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 21 events. 3/21 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2023-11-29 03:23:33,097 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 23 transitions, 60 flow [2023-11-29 03:23:33,100 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 6 places, 6 transitions, 12 flow [2023-11-29 03:23:33,113 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:23:33,121 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7212d87d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:23:33,121 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-29 03:23:33,126 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 03:23:33,126 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-29 03:23:33,126 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 03:23:33,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:23:33,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 03:23:33,128 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 03:23:33,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:23:33,135 INFO L85 PathProgramCache]: Analyzing trace with hash 437973, now seen corresponding path program 1 times [2023-11-29 03:23:33,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:23:33,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655779981] [2023-11-29 03:23:33,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:23:33,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:23:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:33,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:23:33,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:23:33,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655779981] [2023-11-29 03:23:33,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655779981] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:23:33,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:23:33,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:23:33,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132943580] [2023-11-29 03:23:33,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:23:33,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:23:33,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:23:33,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:23:33,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:23:33,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2023-11-29 03:23:33,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 6 places, 6 transitions, 12 flow. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:23:33,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:23:33,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2023-11-29 03:23:33,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:23:33,565 INFO L124 PetriNetUnfolderBase]: 1/9 cut-off events. [2023-11-29 03:23:33,566 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 03:23:33,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18 conditions, 9 events. 1/9 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 1/9 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2023-11-29 03:23:33,568 INFO L140 encePairwiseOnDemand]: 18/23 looper letters, 4 selfloop transitions, 3 changer transitions 0/8 dead transitions. [2023-11-29 03:23:33,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 9 places, 8 transitions, 30 flow [2023-11-29 03:23:33,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:23:33,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:23:33,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2023-11-29 03:23:33,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.22826086956521738 [2023-11-29 03:23:33,586 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 21 transitions. [2023-11-29 03:23:33,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 21 transitions. [2023-11-29 03:23:33,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:23:33,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 21 transitions. [2023-11-29 03:23:33,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:23:33,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:23:33,595 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:23:33,598 INFO L175 Difference]: Start difference. First operand has 6 places, 6 transitions, 12 flow. Second operand 4 states and 21 transitions. [2023-11-29 03:23:33,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 9 places, 8 transitions, 30 flow [2023-11-29 03:23:33,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 9 places, 8 transitions, 30 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 03:23:33,602 INFO L231 Difference]: Finished difference. Result has 11 places, 8 transitions, 34 flow [2023-11-29 03:23:33,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=12, PETRI_DIFFERENCE_MINUEND_PLACES=6, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=34, PETRI_PLACES=11, PETRI_TRANSITIONS=8} [2023-11-29 03:23:33,608 INFO L281 CegarLoopForPetriNet]: 6 programPoint places, 5 predicate places. [2023-11-29 03:23:33,608 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 8 transitions, 34 flow [2023-11-29 03:23:33,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:23:33,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:23:33,609 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 03:23:33,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 03:23:33,610 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 03:23:33,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:23:33,611 INFO L85 PathProgramCache]: Analyzing trace with hash 163182040, now seen corresponding path program 1 times [2023-11-29 03:23:33,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:23:33,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415719030] [2023-11-29 03:23:33,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:23:33,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:23:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:33,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:23:33,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:23:33,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415719030] [2023-11-29 03:23:33,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415719030] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:23:33,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620527737] [2023-11-29 03:23:33,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:23:33,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:23:33,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:23:33,815 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:23:33,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:23:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:33,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:23:33,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:23:33,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:23:33,996 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:23:33,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620527737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:23:33,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:23:33,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 03:23:33,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663793906] [2023-11-29 03:23:33,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:23:34,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:23:34,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:23:34,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:23:34,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:23:34,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2023-11-29 03:23:34,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 8 transitions, 34 flow. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:23:34,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:23:34,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2023-11-29 03:23:34,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:23:34,066 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2023-11-29 03:23:34,066 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 03:23:34,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 8 events. 1/8 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 1/8 useless extension candidates. Maximal degree in co-relation 10. Up to 4 conditions per place. [2023-11-29 03:23:34,067 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 1 selfloop transitions, 5 changer transitions 0/7 dead transitions. [2023-11-29 03:23:34,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 7 transitions, 42 flow [2023-11-29 03:23:34,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:23:34,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 03:23:34,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 25 transitions. [2023-11-29 03:23:34,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.18115942028985507 [2023-11-29 03:23:34,070 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 25 transitions. [2023-11-29 03:23:34,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 25 transitions. [2023-11-29 03:23:34,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:23:34,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 25 transitions. [2023-11-29 03:23:34,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:23:34,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:23:34,073 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:23:34,074 INFO L175 Difference]: Start difference. First operand has 11 places, 8 transitions, 34 flow. Second operand 6 states and 25 transitions. [2023-11-29 03:23:34,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 7 transitions, 42 flow [2023-11-29 03:23:34,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 7 transitions, 40 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:23:34,076 INFO L231 Difference]: Finished difference. Result has 14 places, 7 transitions, 38 flow [2023-11-29 03:23:34,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=38, PETRI_PLACES=14, PETRI_TRANSITIONS=7} [2023-11-29 03:23:34,077 INFO L281 CegarLoopForPetriNet]: 6 programPoint places, 8 predicate places. [2023-11-29 03:23:34,077 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 7 transitions, 38 flow [2023-11-29 03:23:34,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:23:34,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:23:34,078 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 03:23:34,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:23:34,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-29 03:23:34,280 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 03:23:34,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:23:34,280 INFO L85 PathProgramCache]: Analyzing trace with hash 763676377, now seen corresponding path program 1 times [2023-11-29 03:23:34,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:23:34,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677929943] [2023-11-29 03:23:34,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:23:34,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:23:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:34,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:23:34,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:23:34,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677929943] [2023-11-29 03:23:34,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677929943] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:23:34,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696118058] [2023-11-29 03:23:34,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:23:34,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:23:34,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:23:34,410 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:23:34,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:23:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:34,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:23:34,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:23:34,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:23:34,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:23:34,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:23:34,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696118058] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:23:34,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:23:34,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 03:23:34,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054582400] [2023-11-29 03:23:34,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:23:34,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:23:34,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:23:34,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:23:34,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:23:34,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2023-11-29 03:23:34,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 7 transitions, 38 flow. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:23:34,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:23:34,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2023-11-29 03:23:34,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:23:34,735 INFO L124 PetriNetUnfolderBase]: 1/17 cut-off events. [2023-11-29 03:23:34,736 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-29 03:23:34,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 17 events. 1/17 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 3/20 useless extension candidates. Maximal degree in co-relation 8. Up to 7 conditions per place. [2023-11-29 03:23:34,736 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 3 selfloop transitions, 9 changer transitions 0/13 dead transitions. [2023-11-29 03:23:34,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 13 transitions, 98 flow [2023-11-29 03:23:34,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 03:23:34,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 03:23:34,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 45 transitions. [2023-11-29 03:23:34,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.1956521739130435 [2023-11-29 03:23:34,740 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 45 transitions. [2023-11-29 03:23:34,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 45 transitions. [2023-11-29 03:23:34,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:23:34,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 45 transitions. [2023-11-29 03:23:34,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:23:34,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 23.0) internal successors, (253), 11 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:23:34,743 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 23.0) internal successors, (253), 11 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:23:34,744 INFO L175 Difference]: Start difference. First operand has 14 places, 7 transitions, 38 flow. Second operand 10 states and 45 transitions. [2023-11-29 03:23:34,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 13 transitions, 98 flow [2023-11-29 03:23:34,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 13 transitions, 72 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-11-29 03:23:34,746 INFO L231 Difference]: Finished difference. Result has 21 places, 13 transitions, 82 flow [2023-11-29 03:23:34,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=82, PETRI_PLACES=21, PETRI_TRANSITIONS=13} [2023-11-29 03:23:34,747 INFO L281 CegarLoopForPetriNet]: 6 programPoint places, 15 predicate places. [2023-11-29 03:23:34,747 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 13 transitions, 82 flow [2023-11-29 03:23:34,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:23:34,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:23:34,748 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-29 03:23:34,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:23:34,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-29 03:23:34,949 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 03:23:34,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:23:34,950 INFO L85 PathProgramCache]: Analyzing trace with hash -492973252, now seen corresponding path program 2 times [2023-11-29 03:23:34,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:23:34,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564436258] [2023-11-29 03:23:34,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:23:34,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:23:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:35,218 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:23:35,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:23:35,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564436258] [2023-11-29 03:23:35,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564436258] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:23:35,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000378473] [2023-11-29 03:23:35,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:23:35,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:23:35,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:23:35,221 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:23:35,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:23:35,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 03:23:35,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:23:35,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:23:35,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:23:35,389 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 03:23:35,389 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:23:35,433 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 03:23:35,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000378473] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:23:35,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:23:35,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-29 03:23:35,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886535567] [2023-11-29 03:23:35,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:23:35,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 03:23:35,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:23:35,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 03:23:35,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:23:35,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2023-11-29 03:23:35,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 13 transitions, 82 flow. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:23:35,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:23:35,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2023-11-29 03:23:35,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:23:35,656 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2023-11-29 03:23:35,656 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-11-29 03:23:35,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 19 events. 1/19 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 2/21 useless extension candidates. Maximal degree in co-relation 38. Up to 7 conditions per place. [2023-11-29 03:23:35,657 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2023-11-29 03:23:35,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 14 transitions, 110 flow [2023-11-29 03:23:35,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 03:23:35,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 03:23:35,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 57 transitions. [2023-11-29 03:23:35,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.17701863354037267 [2023-11-29 03:23:35,660 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 57 transitions. [2023-11-29 03:23:35,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 57 transitions. [2023-11-29 03:23:35,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:23:35,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 57 transitions. [2023-11-29 03:23:35,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 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) [2023-11-29 03:23:35,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 23.0) internal successors, (345), 15 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:23:35,665 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 23.0) internal successors, (345), 15 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:23:35,665 INFO L175 Difference]: Start difference. First operand has 21 places, 13 transitions, 82 flow. Second operand 14 states and 57 transitions. [2023-11-29 03:23:35,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 14 transitions, 110 flow [2023-11-29 03:23:35,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 14 transitions, 88 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-11-29 03:23:35,668 INFO L231 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2023-11-29 03:23:35,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2023-11-29 03:23:35,670 INFO L281 CegarLoopForPetriNet]: 6 programPoint places, 21 predicate places. [2023-11-29 03:23:35,670 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2023-11-29 03:23:35,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:23:35,673 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-11-29 03:23:35,674 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-11-29 03:23:35,674 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-29 03:23:35,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-29 03:23:35,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:23:35,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:23:35,876 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-11-29 03:23:35,880 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 03:23:35,880 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 03:23:35,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 03:23:35 BasicIcfg [2023-11-29 03:23:35,887 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 03:23:35,888 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 03:23:35,888 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 03:23:35,889 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 03:23:35,889 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:23:32" (3/4) ... [2023-11-29 03:23:35,892 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 03:23:35,896 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-29 03:23:35,896 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-29 03:23:35,904 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 93 nodes and edges [2023-11-29 03:23:35,905 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2023-11-29 03:23:35,905 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-29 03:23:35,906 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-29 03:23:36,023 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 03:23:36,024 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 03:23:36,024 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 03:23:36,025 INFO L158 Benchmark]: Toolchain (without parser) took 4278.13ms. Allocated memory was 172.0MB in the beginning and 232.8MB in the end (delta: 60.8MB). Free memory was 123.7MB in the beginning and 128.1MB in the end (delta: -4.4MB). Peak memory consumption was 57.1MB. Max. memory is 16.1GB. [2023-11-29 03:23:36,026 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 172.0MB. Free memory is still 113.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 03:23:36,027 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.25ms. Allocated memory is still 172.0MB. Free memory was 123.7MB in the beginning and 112.0MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 03:23:36,027 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.79ms. Allocated memory is still 172.0MB. Free memory was 112.0MB in the beginning and 109.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 03:23:36,028 INFO L158 Benchmark]: Boogie Preprocessor took 52.59ms. Allocated memory is still 172.0MB. Free memory was 109.9MB in the beginning and 107.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 03:23:36,028 INFO L158 Benchmark]: RCFGBuilder took 788.71ms. Allocated memory was 172.0MB in the beginning and 232.8MB in the end (delta: 60.8MB). Free memory was 107.8MB in the beginning and 185.7MB in the end (delta: -77.9MB). Peak memory consumption was 40.3MB. Max. memory is 16.1GB. [2023-11-29 03:23:36,028 INFO L158 Benchmark]: TraceAbstraction took 2929.18ms. Allocated memory is still 232.8MB. Free memory was 185.7MB in the beginning and 133.3MB in the end (delta: 52.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2023-11-29 03:23:36,029 INFO L158 Benchmark]: Witness Printer took 136.38ms. Allocated memory is still 232.8MB. Free memory was 133.3MB in the beginning and 128.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 03:23:36,031 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 172.0MB. Free memory is still 113.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 318.25ms. Allocated memory is still 172.0MB. Free memory was 123.7MB in the beginning and 112.0MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.79ms. Allocated memory is still 172.0MB. Free memory was 112.0MB in the beginning and 109.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.59ms. Allocated memory is still 172.0MB. Free memory was 109.9MB in the beginning and 107.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 788.71ms. Allocated memory was 172.0MB in the beginning and 232.8MB in the end (delta: 60.8MB). Free memory was 107.8MB in the beginning and 185.7MB in the end (delta: -77.9MB). Peak memory consumption was 40.3MB. Max. memory is 16.1GB. * TraceAbstraction took 2929.18ms. Allocated memory is still 232.8MB. Free memory was 185.7MB in the beginning and 133.3MB in the end (delta: 52.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. * Witness Printer took 136.38ms. Allocated memory is still 232.8MB. Free memory was 133.3MB in the beginning and 128.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: 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, 29 locations, 4 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: 2.8s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 53 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 132 IncrementalHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 2 mSDtfsCounter, 132 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=3, InterpolantAutomatonStates: 34, 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, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 61 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 225 SizeOfPredicates, 9 NumberOfNonLiveVariables, 262 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 46/103 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 03:23:36,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8677fb09-e7ae-4e64-991e-e1b8e66fc28c/bin/uautomizer-verify-BQ2R08f2Ya/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