./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/unroll-cond-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 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_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/unroll-cond-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ --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 052a68c73a5d1c6e7122fc0c660c02483f37277d0239d876d93b351fcdd64a16 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:32:06,551 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:32:06,627 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-23 22:32:06,635 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:32:06,636 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:32:06,667 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:32:06,668 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:32:06,669 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:32:06,670 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:32:06,671 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:32:06,672 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:32:06,673 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:32:06,674 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:32:06,675 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:32:06,676 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:32:06,676 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:32:06,677 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:32:06,691 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:32:06,693 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:32:06,693 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:32:06,694 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:32:06,695 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:32:06,695 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:32:06,696 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:32:06,696 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 22:32:06,697 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 22:32:06,698 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:32:06,698 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:32:06,699 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:32:06,700 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:32:06,702 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:32:06,702 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:32:06,702 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:32:06,703 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:32:06,703 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:32:06,703 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:32:06,704 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:32:06,704 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:32:06,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:32:06,705 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:32:06,705 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:32:06,706 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:32:06,706 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:32:06,707 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:32:06,708 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_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 052a68c73a5d1c6e7122fc0c660c02483f37277d0239d876d93b351fcdd64a16 [2023-11-23 22:32:07,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:32:07,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:32:07,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:32:07,113 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:32:07,114 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:32:07,116 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2023-11-23 22:32:10,532 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:32:10,840 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:32:10,841 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2023-11-23 22:32:10,852 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ/data/d606f47cb/6ff78d21940141d2a6ae4908a5127ab7/FLAG459338003 [2023-11-23 22:32:10,871 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ/data/d606f47cb/6ff78d21940141d2a6ae4908a5127ab7 [2023-11-23 22:32:10,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:32:10,886 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:32:10,892 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:32:10,892 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:32:10,899 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:32:10,904 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:32:10" (1/1) ... [2023-11-23 22:32:10,905 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dd0e1b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:32:10, skipping insertion in model container [2023-11-23 22:32:10,906 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:32:10" (1/1) ... [2023-11-23 22:32:10,960 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:32:11,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:32:11,287 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:32:11,326 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:32:11,346 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:32:11,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:32:11 WrapperNode [2023-11-23 22:32:11,347 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:32:11,351 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:32:11,351 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:32:11,352 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:32:11,361 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:32:11" (1/1) ... [2023-11-23 22:32:11,373 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:32:11" (1/1) ... [2023-11-23 22:32:11,417 INFO L138 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 213 [2023-11-23 22:32:11,417 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:32:11,418 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:32:11,419 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:32:11,419 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:32:11,434 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:32:11" (1/1) ... [2023-11-23 22:32:11,434 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:32:11" (1/1) ... [2023-11-23 22:32:11,439 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:32:11" (1/1) ... [2023-11-23 22:32:11,458 INFO L189 HeapSplitter]: Split 17 memory accesses to 4 slices as follows [2, 2, 11, 2] [2023-11-23 22:32:11,458 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:32:11" (1/1) ... [2023-11-23 22:32:11,459 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:32:11" (1/1) ... [2023-11-23 22:32:11,471 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:32:11" (1/1) ... [2023-11-23 22:32:11,477 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:32:11" (1/1) ... [2023-11-23 22:32:11,480 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:32:11" (1/1) ... [2023-11-23 22:32:11,482 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:32:11" (1/1) ... [2023-11-23 22:32:11,487 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:32:11,489 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:32:11,489 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:32:11,489 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:32:11,490 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:32:11" (1/1) ... [2023-11-23 22:32:11,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:32:11,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:32:11,527 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:32:11,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:32:11,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:32:11,564 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-23 22:32:11,564 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-23 22:32:11,564 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-23 22:32:11,564 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-23 22:32:11,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:32:11,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 22:32:11,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 22:32:11,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 22:32:11,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:32:11,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 22:32:11,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 22:32:11,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 22:32:11,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 22:32:11,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 22:32:11,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:32:11,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:32:11,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 22:32:11,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 22:32:11,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 22:32:11,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 22:32:11,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:32:11,577 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 22:32:11,721 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:32:11,723 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:32:12,223 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:32:12,846 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:32:12,846 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 22:32:12,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:32:12 BoogieIcfgContainer [2023-11-23 22:32:12,848 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:32:12,854 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:32:12,854 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:32:12,858 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:32:12,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:32:10" (1/3) ... [2023-11-23 22:32:12,859 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468fb41a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:32:12, skipping insertion in model container [2023-11-23 22:32:12,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:32:11" (2/3) ... [2023-11-23 22:32:12,861 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468fb41a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:32:12, skipping insertion in model container [2023-11-23 22:32:12,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:32:12" (3/3) ... [2023-11-23 22:32:12,863 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-5.wvr.c [2023-11-23 22:32:12,882 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 22:32:12,896 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:32:12,896 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 22:32:12,896 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 22:32:12,979 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-23 22:32:13,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 23 transitions, 60 flow [2023-11-23 22:32:13,086 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2023-11-23 22:32:13,087 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-23 22:32:13,099 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 4. Compared 23 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. [2023-11-23 22:32:13,099 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 23 transitions, 60 flow [2023-11-23 22:32:13,104 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 6 places, 6 transitions, 12 flow [2023-11-23 22:32:13,129 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:32:13,136 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;@6f38df8e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:32:13,137 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-23 22:32:13,140 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:32:13,140 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-23 22:32:13,140 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:32:13,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:32:13,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-23 22:32:13,142 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)] === [2023-11-23 22:32:13,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:32:13,148 INFO L85 PathProgramCache]: Analyzing trace with hash 674709, now seen corresponding path program 1 times [2023-11-23 22:32:13,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:32:13,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777625489] [2023-11-23 22:32:13,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:32:13,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:32:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:32:13,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:32:13,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:32:13,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777625489] [2023-11-23 22:32:13,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777625489] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:32:13,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:32:13,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:32:13,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589229901] [2023-11-23 22:32:13,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:32:13,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:32:13,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:32:13,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:32:13,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:32:13,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2023-11-23 22:32:13,614 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) [2023-11-23 22:32:13,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:32:13,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2023-11-23 22:32:13,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:32:13,666 INFO L124 PetriNetUnfolderBase]: 1/9 cut-off events. [2023-11-23 22:32:13,667 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:32:13,667 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. [2023-11-23 22:32:13,669 INFO L140 encePairwiseOnDemand]: 18/23 looper letters, 4 selfloop transitions, 3 changer transitions 0/8 dead transitions. [2023-11-23 22:32:13,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 9 places, 8 transitions, 30 flow [2023-11-23 22:32:13,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:32:13,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:32:13,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2023-11-23 22:32:13,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.22826086956521738 [2023-11-23 22:32:13,687 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 21 transitions. [2023-11-23 22:32:13,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 21 transitions. [2023-11-23 22:32:13,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:32:13,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 21 transitions. [2023-11-23 22:32:13,696 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) [2023-11-23 22:32:13,701 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) [2023-11-23 22:32:13,702 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) [2023-11-23 22:32:13,705 INFO L175 Difference]: Start difference. First operand has 6 places, 6 transitions, 12 flow. Second operand 4 states and 21 transitions. [2023-11-23 22:32:13,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 9 places, 8 transitions, 30 flow [2023-11-23 22:32:13,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 9 places, 8 transitions, 30 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 22:32:13,711 INFO L231 Difference]: Finished difference. Result has 11 places, 8 transitions, 34 flow [2023-11-23 22:32:13,713 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} [2023-11-23 22:32:13,718 INFO L281 CegarLoopForPetriNet]: 6 programPoint places, 5 predicate places. [2023-11-23 22:32:13,718 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 8 transitions, 34 flow [2023-11-23 22:32:13,718 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) [2023-11-23 22:32:13,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:32:13,719 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-23 22:32:13,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:32:13,720 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)] === [2023-11-23 22:32:13,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:32:13,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1373907874, now seen corresponding path program 1 times [2023-11-23 22:32:13,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:32:13,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003634857] [2023-11-23 22:32:13,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:32:13,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:32:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:32:13,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:32:13,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:32:13,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003634857] [2023-11-23 22:32:13,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003634857] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:32:13,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014763505] [2023-11-23 22:32:13,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:32:13,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:32:13,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:32:13,940 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:32:13,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 22:32:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:32:14,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 22:32:14,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:32:14,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:32:14,174 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:32:14,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014763505] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:32:14,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:32:14,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-23 22:32:14,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733821383] [2023-11-23 22:32:14,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:32:14,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:32:14,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:32:14,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:32:14,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 22:32:14,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2023-11-23 22:32:14,201 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) [2023-11-23 22:32:14,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:32:14,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2023-11-23 22:32:14,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:32:14,257 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2023-11-23 22:32:14,261 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-23 22:32:14,262 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. [2023-11-23 22:32:14,262 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 1 selfloop transitions, 5 changer transitions 0/7 dead transitions. [2023-11-23 22:32:14,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 7 transitions, 42 flow [2023-11-23 22:32:14,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:32:14,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 22:32:14,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 25 transitions. [2023-11-23 22:32:14,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.18115942028985507 [2023-11-23 22:32:14,270 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 25 transitions. [2023-11-23 22:32:14,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 25 transitions. [2023-11-23 22:32:14,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:32:14,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 25 transitions. [2023-11-23 22:32:14,278 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) [2023-11-23 22:32:14,280 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) [2023-11-23 22:32:14,283 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) [2023-11-23 22:32:14,283 INFO L175 Difference]: Start difference. First operand has 11 places, 8 transitions, 34 flow. Second operand 6 states and 25 transitions. [2023-11-23 22:32:14,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 7 transitions, 42 flow [2023-11-23 22:32:14,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 7 transitions, 40 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 22:32:14,286 INFO L231 Difference]: Finished difference. Result has 14 places, 7 transitions, 38 flow [2023-11-23 22:32:14,287 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} [2023-11-23 22:32:14,288 INFO L281 CegarLoopForPetriNet]: 6 programPoint places, 8 predicate places. [2023-11-23 22:32:14,288 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 7 transitions, 38 flow [2023-11-23 22:32:14,288 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) [2023-11-23 22:32:14,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:32:14,289 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-23 22:32:14,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 22:32:14,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:32:14,502 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)] === [2023-11-23 22:32:14,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:32:14,503 INFO L85 PathProgramCache]: Analyzing trace with hash 358529544, now seen corresponding path program 1 times [2023-11-23 22:32:14,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:32:14,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098409458] [2023-11-23 22:32:14,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:32:14,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:32:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:32:14,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:32:14,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:32:14,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098409458] [2023-11-23 22:32:14,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098409458] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:32:14,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070896897] [2023-11-23 22:32:14,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:32:14,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:32:14,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:32:14,721 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:32:14,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 22:32:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:32:14,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 22:32:14,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:32:14,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:32:14,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:32:14,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:32:14,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070896897] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:32:14,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:32:14,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-23 22:32:14,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853373939] [2023-11-23 22:32:14,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:32:14,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 22:32:14,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:32:14,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 22:32:14,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-23 22:32:14,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2023-11-23 22:32:14,970 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) [2023-11-23 22:32:14,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:32:14,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2023-11-23 22:32:14,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:32:15,071 INFO L124 PetriNetUnfolderBase]: 1/17 cut-off events. [2023-11-23 22:32:15,072 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-23 22:32:15,072 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. [2023-11-23 22:32:15,073 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 3 selfloop transitions, 9 changer transitions 0/13 dead transitions. [2023-11-23 22:32:15,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 13 transitions, 98 flow [2023-11-23 22:32:15,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 22:32:15,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-23 22:32:15,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 45 transitions. [2023-11-23 22:32:15,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.1956521739130435 [2023-11-23 22:32:15,076 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 45 transitions. [2023-11-23 22:32:15,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 45 transitions. [2023-11-23 22:32:15,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:32:15,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 45 transitions. [2023-11-23 22:32:15,078 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) [2023-11-23 22:32:15,079 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) [2023-11-23 22:32:15,079 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) [2023-11-23 22:32:15,080 INFO L175 Difference]: Start difference. First operand has 14 places, 7 transitions, 38 flow. Second operand 10 states and 45 transitions. [2023-11-23 22:32:15,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 13 transitions, 98 flow [2023-11-23 22:32:15,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 13 transitions, 72 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-11-23 22:32:15,082 INFO L231 Difference]: Finished difference. Result has 21 places, 13 transitions, 82 flow [2023-11-23 22:32:15,082 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} [2023-11-23 22:32:15,083 INFO L281 CegarLoopForPetriNet]: 6 programPoint places, 15 predicate places. [2023-11-23 22:32:15,083 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 13 transitions, 82 flow [2023-11-23 22:32:15,084 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) [2023-11-23 22:32:15,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:32:15,084 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-23 22:32:15,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 22:32:15,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:32:15,306 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)] === [2023-11-23 22:32:15,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:32:15,307 INFO L85 PathProgramCache]: Analyzing trace with hash 172378865, now seen corresponding path program 2 times [2023-11-23 22:32:15,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:32:15,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147232098] [2023-11-23 22:32:15,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:32:15,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:32:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:32:15,542 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:32:15,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:32:15,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147232098] [2023-11-23 22:32:15,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147232098] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:32:15,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138000052] [2023-11-23 22:32:15,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 22:32:15,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:32:15,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:32:15,546 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:32:15,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 22:32:15,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 22:32:15,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 22:32:15,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 22:32:15,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:32:15,753 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 22:32:15,753 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:32:15,820 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 22:32:15,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138000052] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:32:15,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:32:15,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-23 22:32:15,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456584050] [2023-11-23 22:32:15,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:32:15,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 22:32:15,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:32:15,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 22:32:15,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-23 22:32:15,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 23 [2023-11-23 22:32:15,864 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) [2023-11-23 22:32:15,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:32:15,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 23 [2023-11-23 22:32:15,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:32:16,072 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2023-11-23 22:32:16,072 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-11-23 22:32:16,073 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. [2023-11-23 22:32:16,073 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2023-11-23 22:32:16,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 14 transitions, 110 flow [2023-11-23 22:32:16,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 22:32:16,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-23 22:32:16,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 57 transitions. [2023-11-23 22:32:16,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.17701863354037267 [2023-11-23 22:32:16,076 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 57 transitions. [2023-11-23 22:32:16,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 57 transitions. [2023-11-23 22:32:16,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:32:16,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 57 transitions. [2023-11-23 22:32:16,078 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) [2023-11-23 22:32:16,079 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) [2023-11-23 22:32:16,080 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) [2023-11-23 22:32:16,080 INFO L175 Difference]: Start difference. First operand has 21 places, 13 transitions, 82 flow. Second operand 14 states and 57 transitions. [2023-11-23 22:32:16,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 14 transitions, 110 flow [2023-11-23 22:32:16,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 14 transitions, 88 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-11-23 22:32:16,083 INFO L231 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2023-11-23 22:32:16,083 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} [2023-11-23 22:32:16,084 INFO L281 CegarLoopForPetriNet]: 6 programPoint places, 21 predicate places. [2023-11-23 22:32:16,084 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2023-11-23 22:32:16,085 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) [2023-11-23 22:32:16,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-11-23 22:32:16,088 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-11-23 22:32:16,088 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-23 22:32:16,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-23 22:32:16,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 22:32:16,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:32:16,313 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-11-23 22:32:16,317 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-23 22:32:16,317 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 22:32:16,327 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:32:16 BasicIcfg [2023-11-23 22:32:16,327 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 22:32:16,329 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 22:32:16,329 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 22:32:16,330 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 22:32:16,330 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:32:12" (3/4) ... [2023-11-23 22:32:16,333 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 22:32:16,337 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-23 22:32:16,338 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-23 22:32:16,345 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 88 nodes and edges [2023-11-23 22:32:16,346 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2023-11-23 22:32:16,346 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-23 22:32:16,347 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-23 22:32:16,459 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ/witness.graphml [2023-11-23 22:32:16,460 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ/witness.yml [2023-11-23 22:32:16,460 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 22:32:16,461 INFO L158 Benchmark]: Toolchain (without parser) took 5574.86ms. Allocated memory was 138.4MB in the beginning and 184.5MB in the end (delta: 46.1MB). Free memory was 91.7MB in the beginning and 128.7MB in the end (delta: -37.0MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2023-11-23 22:32:16,461 INFO L158 Benchmark]: CDTParser took 1.56ms. Allocated memory is still 138.4MB. Free memory is still 106.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 22:32:16,461 INFO L158 Benchmark]: CACSL2BoogieTranslator took 457.93ms. Allocated memory is still 138.4MB. Free memory was 91.4MB in the beginning and 79.5MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 22:32:16,462 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.74ms. Allocated memory is still 138.4MB. Free memory was 79.5MB in the beginning and 77.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 22:32:16,462 INFO L158 Benchmark]: Boogie Preprocessor took 69.49ms. Allocated memory is still 138.4MB. Free memory was 77.0MB in the beginning and 74.1MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 22:32:16,463 INFO L158 Benchmark]: RCFGBuilder took 1360.07ms. Allocated memory was 138.4MB in the beginning and 184.5MB in the end (delta: 46.1MB). Free memory was 74.1MB in the beginning and 109.4MB in the end (delta: -35.3MB). Peak memory consumption was 37.3MB. Max. memory is 16.1GB. [2023-11-23 22:32:16,463 INFO L158 Benchmark]: TraceAbstraction took 3473.77ms. Allocated memory is still 184.5MB. Free memory was 109.4MB in the beginning and 134.0MB in the end (delta: -24.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 22:32:16,464 INFO L158 Benchmark]: Witness Printer took 131.10ms. Allocated memory is still 184.5MB. Free memory was 134.0MB in the beginning and 128.7MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-23 22:32:16,466 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.56ms. Allocated memory is still 138.4MB. Free memory is still 106.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 457.93ms. Allocated memory is still 138.4MB. Free memory was 91.4MB in the beginning and 79.5MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.74ms. Allocated memory is still 138.4MB. Free memory was 79.5MB in the beginning and 77.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.49ms. Allocated memory is still 138.4MB. Free memory was 77.0MB in the beginning and 74.1MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1360.07ms. Allocated memory was 138.4MB in the beginning and 184.5MB in the end (delta: 46.1MB). Free memory was 74.1MB in the beginning and 109.4MB in the end (delta: -35.3MB). Peak memory consumption was 37.3MB. Max. memory is 16.1GB. * TraceAbstraction took 3473.77ms. Allocated memory is still 184.5MB. Free memory was 109.4MB in the beginning and 134.0MB in the end (delta: -24.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 131.10ms. Allocated memory is still 184.5MB. Free memory was 134.0MB in the beginning and 128.7MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 125]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 125]: 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: 3.3s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 53 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.1s 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, 1.1s 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! [2023-11-23 22:32:16,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76e0e09d-2550-49bd-84f4-44ed61d5fb75/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE