./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/lazy01.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f5552-efcf-45d2-a46c-996e00b3257d/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f5552-efcf-45d2-a46c-996e00b3257d/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f5552-efcf-45d2-a46c-996e00b3257d/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f5552-efcf-45d2-a46c-996e00b3257d/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/lazy01.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f5552-efcf-45d2-a46c-996e00b3257d/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f5552-efcf-45d2-a46c-996e00b3257d/bin/uautomizer-verify-qhAvR1uOyd --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 b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:18:11,439 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:18:11,562 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f5552-efcf-45d2-a46c-996e00b3257d/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-13 13:18:11,573 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:18:11,573 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:18:11,619 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:18:11,621 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:18:11,621 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:18:11,622 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:18:11,622 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:18:11,623 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:18:11,623 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:18:11,624 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:18:11,624 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:18:11,625 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:18:11,625 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:18:11,626 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:18:11,626 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:18:11,627 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:18:11,627 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:18:11,627 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:18:11,627 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:18:11,627 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:18:11,627 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:18:11,628 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:18:11,628 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-13 13:18:11,628 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 13:18:11,628 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:18:11,628 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:18:11,628 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:18:11,629 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:18:11,629 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:18:11,629 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:18:11,629 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:18:11,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:18:11,630 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:18:11,630 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:18:11,630 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:18:11,630 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:18:11,630 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:18:11,630 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:18:11,630 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:18:11,631 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:18:11,631 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:18:11,631 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_c16f5552-efcf-45d2-a46c-996e00b3257d/bin/uautomizer-verify-qhAvR1uOyd 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 -> b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 [2024-11-13 13:18:12,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:18:12,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:18:12,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:18:12,051 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:18:12,051 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:18:12,053 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f5552-efcf-45d2-a46c-996e00b3257d/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread/lazy01.i Unable to find full path for "g++" [2024-11-13 13:18:14,163 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:18:14,644 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:18:14,648 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f5552-efcf-45d2-a46c-996e00b3257d/sv-benchmarks/c/pthread/lazy01.i [2024-11-13 13:18:14,676 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f5552-efcf-45d2-a46c-996e00b3257d/bin/uautomizer-verify-qhAvR1uOyd/data/0d3712051/c34c652c76f74f6da1c03133010f1479/FLAG47bb857af [2024-11-13 13:18:14,708 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f5552-efcf-45d2-a46c-996e00b3257d/bin/uautomizer-verify-qhAvR1uOyd/data/0d3712051/c34c652c76f74f6da1c03133010f1479 [2024-11-13 13:18:14,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:18:14,714 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:18:14,717 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:18:14,717 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:18:14,723 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:18:14,724 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:18:14" (1/1) ... [2024-11-13 13:18:14,726 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b863c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:18:14, skipping insertion in model container [2024-11-13 13:18:14,728 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:18:14" (1/1) ... [2024-11-13 13:18:14,780 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:18:15,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:18:15,256 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:18:15,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:18:15,403 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:18:15,404 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:18:15 WrapperNode [2024-11-13 13:18:15,404 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:18:15,406 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:18:15,407 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:18:15,408 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:18:15,417 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:18:15" (1/1) ... [2024-11-13 13:18:15,437 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:18:15" (1/1) ... [2024-11-13 13:18:15,473 INFO L138 Inliner]: procedures = 172, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 61 [2024-11-13 13:18:15,474 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:18:15,475 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:18:15,477 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:18:15,478 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:18:15,489 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:18:15" (1/1) ... [2024-11-13 13:18:15,489 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:18:15" (1/1) ... [2024-11-13 13:18:15,493 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:18:15" (1/1) ... [2024-11-13 13:18:15,520 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-11-13 13:18:15,521 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:18:15" (1/1) ... [2024-11-13 13:18:15,521 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:18:15" (1/1) ... [2024-11-13 13:18:15,527 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:18:15" (1/1) ... [2024-11-13 13:18:15,530 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:18:15" (1/1) ... [2024-11-13 13:18:15,531 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:18:15" (1/1) ... [2024-11-13 13:18:15,532 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:18:15" (1/1) ... [2024-11-13 13:18:15,535 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:18:15,536 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:18:15,536 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:18:15,536 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:18:15,537 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:18:15" (1/1) ... [2024-11-13 13:18:15,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:18:15,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f5552-efcf-45d2-a46c-996e00b3257d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:18:15,588 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f5552-efcf-45d2-a46c-996e00b3257d/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:18:15,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f5552-efcf-45d2-a46c-996e00b3257d/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:18:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 13:18:15,620 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 13:18:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 13:18:15,621 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 13:18:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-13 13:18:15,621 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-13 13:18:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-13 13:18:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:18:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 13:18:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 13:18:15,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:18:15,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 13:18:15,622 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-13 13:18:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:18:15,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:18:15,624 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 13:18:15,796 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:18:15,798 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:18:16,061 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 13:18:16,061 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:18:16,302 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:18:16,303 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-13 13:18:16,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:18:16 BoogieIcfgContainer [2024-11-13 13:18:16,303 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:18:16,306 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:18:16,307 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:18:16,315 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:18:16,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:18:14" (1/3) ... [2024-11-13 13:18:16,316 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0b9e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:18:16, skipping insertion in model container [2024-11-13 13:18:16,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:18:15" (2/3) ... [2024-11-13 13:18:16,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0b9e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:18:16, skipping insertion in model container [2024-11-13 13:18:16,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:18:16" (3/3) ... [2024-11-13 13:18:16,320 INFO L112 eAbstractionObserver]: Analyzing ICFG lazy01.i [2024-11-13 13:18:16,340 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:18:16,342 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG lazy01.i that has 4 procedures, 38 locations, 1 initial locations, 0 loop locations, and 4 error locations. [2024-11-13 13:18:16,342 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 13:18:16,439 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-13 13:18:16,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 37 transitions, 95 flow [2024-11-13 13:18:16,568 INFO L124 PetriNetUnfolderBase]: 0/34 cut-off events. [2024-11-13 13:18:16,572 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-13 13:18:16,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 34 events. 0/34 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-11-13 13:18:16,577 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 37 transitions, 95 flow [2024-11-13 13:18:16,583 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 74 flow [2024-11-13 13:18:16,598 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:18:16,621 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@d684f74, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:18:16,621 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-13 13:18:16,629 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:18:16,629 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-13 13:18:16,629 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:18:16,630 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:18:16,630 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 13:18:16,631 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-13 13:18:16,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:18:16,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1548917117, now seen corresponding path program 1 times [2024-11-13 13:18:16,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:18:16,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366767345] [2024-11-13 13:18:16,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:18:16,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:18:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:18:17,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:18:17,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:18:17,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366767345] [2024-11-13 13:18:17,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366767345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:18:17,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:18:17,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:18:17,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141007660] [2024-11-13 13:18:17,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:18:17,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:18:17,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:18:17,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:18:17,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:18:17,133 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-11-13 13:18:17,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:17,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:18:17,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-11-13 13:18:17,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:18:17,798 INFO L124 PetriNetUnfolderBase]: 1092/1753 cut-off events. [2024-11-13 13:18:17,799 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2024-11-13 13:18:17,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3577 conditions, 1753 events. 1092/1753 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 9067 event pairs, 280 based on Foata normal form. 96/1761 useless extension candidates. Maximal degree in co-relation 3345. Up to 1414 conditions per place. [2024-11-13 13:18:17,819 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 43 selfloop transitions, 4 changer transitions 13/66 dead transitions. [2024-11-13 13:18:17,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 66 transitions, 279 flow [2024-11-13 13:18:17,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:18:17,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 13:18:17,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-11-13 13:18:17,840 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6108108108108108 [2024-11-13 13:18:17,842 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 74 flow. Second operand 5 states and 113 transitions. [2024-11-13 13:18:17,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 66 transitions, 279 flow [2024-11-13 13:18:17,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 66 transitions, 268 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 13:18:17,863 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 101 flow [2024-11-13 13:18:17,867 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=101, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2024-11-13 13:18:17,874 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2024-11-13 13:18:17,874 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 101 flow [2024-11-13 13:18:17,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:17,875 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:18:17,875 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:18:17,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:18:17,875 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-13 13:18:17,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:18:17,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1804526676, now seen corresponding path program 1 times [2024-11-13 13:18:17,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:18:17,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290853612] [2024-11-13 13:18:17,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:18:17,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:18:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:18:18,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:18:18,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:18:18,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290853612] [2024-11-13 13:18:18,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290853612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:18:18,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:18:18,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:18:18,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805166382] [2024-11-13 13:18:18,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:18:18,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:18:18,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:18:18,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:18:18,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:18:18,212 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-11-13 13:18:18,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:18,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:18:18,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-11-13 13:18:18,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:18:18,476 INFO L124 PetriNetUnfolderBase]: 175/500 cut-off events. [2024-11-13 13:18:18,480 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2024-11-13 13:18:18,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1108 conditions, 500 events. 175/500 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2770 event pairs, 44 based on Foata normal form. 89/584 useless extension candidates. Maximal degree in co-relation 1006. Up to 250 conditions per place. [2024-11-13 13:18:18,487 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 25 selfloop transitions, 6 changer transitions 0/41 dead transitions. [2024-11-13 13:18:18,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 41 transitions, 186 flow [2024-11-13 13:18:18,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:18:18,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:18:18,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-11-13 13:18:18,490 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2024-11-13 13:18:18,490 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 101 flow. Second operand 3 states and 72 transitions. [2024-11-13 13:18:18,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 41 transitions, 186 flow [2024-11-13 13:18:18,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 41 transitions, 175 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-13 13:18:18,504 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 102 flow [2024-11-13 13:18:18,506 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2024-11-13 13:18:18,507 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2024-11-13 13:18:18,508 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 102 flow [2024-11-13 13:18:18,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:18,508 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:18:18,509 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:18:18,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:18:18,509 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-13 13:18:18,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:18:18,511 INFO L85 PathProgramCache]: Analyzing trace with hash 117167192, now seen corresponding path program 1 times [2024-11-13 13:18:18,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:18:18,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188734030] [2024-11-13 13:18:18,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:18:18,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:18:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:18:18,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:18:18,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:18:18,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188734030] [2024-11-13 13:18:18,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188734030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:18:18,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:18:18,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:18:18,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307803201] [2024-11-13 13:18:18,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:18:18,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:18:18,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:18:18,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:18:18,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:18:18,804 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-11-13 13:18:18,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:18,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:18:18,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-11-13 13:18:18,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:18:19,060 INFO L124 PetriNetUnfolderBase]: 245/535 cut-off events. [2024-11-13 13:18:19,060 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2024-11-13 13:18:19,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1261 conditions, 535 events. 245/535 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2523 event pairs, 84 based on Foata normal form. 19/545 useless extension candidates. Maximal degree in co-relation 904. Up to 393 conditions per place. [2024-11-13 13:18:19,064 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 38 selfloop transitions, 4 changer transitions 0/48 dead transitions. [2024-11-13 13:18:19,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 232 flow [2024-11-13 13:18:19,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:18:19,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 13:18:19,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-11-13 13:18:19,066 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-11-13 13:18:19,067 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 102 flow. Second operand 5 states and 88 transitions. [2024-11-13 13:18:19,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 48 transitions, 232 flow [2024-11-13 13:18:19,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:18:19,070 INFO L231 Difference]: Finished difference. Result has 45 places, 31 transitions, 100 flow [2024-11-13 13:18:19,070 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=100, PETRI_PLACES=45, PETRI_TRANSITIONS=31} [2024-11-13 13:18:19,071 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-11-13 13:18:19,071 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 31 transitions, 100 flow [2024-11-13 13:18:19,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:19,072 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:18:19,072 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:18:19,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:18:19,072 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-13 13:18:19,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:18:19,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1028573768, now seen corresponding path program 1 times [2024-11-13 13:18:19,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:18:19,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557579210] [2024-11-13 13:18:19,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:18:19,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:18:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:18:19,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:18:19,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:18:19,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557579210] [2024-11-13 13:18:19,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557579210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:18:19,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:18:19,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:18:19,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542169311] [2024-11-13 13:18:19,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:18:19,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:18:19,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:18:19,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:18:19,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:18:19,243 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-11-13 13:18:19,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 31 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:19,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:18:19,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-11-13 13:18:19,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:18:19,499 INFO L124 PetriNetUnfolderBase]: 223/493 cut-off events. [2024-11-13 13:18:19,499 INFO L125 PetriNetUnfolderBase]: For 196/196 co-relation queries the response was YES. [2024-11-13 13:18:19,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1127 conditions, 493 events. 223/493 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2286 event pairs, 58 based on Foata normal form. 16/499 useless extension candidates. Maximal degree in co-relation 774. Up to 148 conditions per place. [2024-11-13 13:18:19,504 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 44 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-11-13 13:18:19,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 55 transitions, 259 flow [2024-11-13 13:18:19,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:18:19,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 13:18:19,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 95 transitions. [2024-11-13 13:18:19,508 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-11-13 13:18:19,508 INFO L175 Difference]: Start difference. First operand has 45 places, 31 transitions, 100 flow. Second operand 5 states and 95 transitions. [2024-11-13 13:18:19,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 55 transitions, 259 flow [2024-11-13 13:18:19,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 55 transitions, 253 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 13:18:19,510 INFO L231 Difference]: Finished difference. Result has 45 places, 30 transitions, 100 flow [2024-11-13 13:18:19,511 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=100, PETRI_PLACES=45, PETRI_TRANSITIONS=30} [2024-11-13 13:18:19,512 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-11-13 13:18:19,513 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 30 transitions, 100 flow [2024-11-13 13:18:19,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:19,513 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:18:19,513 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:18:19,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:18:19,513 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-13 13:18:19,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:18:19,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1184004970, now seen corresponding path program 1 times [2024-11-13 13:18:19,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:18:19,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597360650] [2024-11-13 13:18:19,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:18:19,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:18:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:18:19,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:18:19,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:18:19,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597360650] [2024-11-13 13:18:19,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597360650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:18:19,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:18:19,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:18:19,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185863122] [2024-11-13 13:18:19,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:18:19,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:18:19,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:18:19,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:18:19,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:18:19,712 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-11-13 13:18:19,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 30 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:19,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:18:19,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-11-13 13:18:19,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:18:19,896 INFO L124 PetriNetUnfolderBase]: 197/452 cut-off events. [2024-11-13 13:18:19,896 INFO L125 PetriNetUnfolderBase]: For 228/228 co-relation queries the response was YES. [2024-11-13 13:18:19,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1042 conditions, 452 events. 197/452 cut-off events. For 228/228 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2107 event pairs, 65 based on Foata normal form. 16/462 useless extension candidates. Maximal degree in co-relation 740. Up to 180 conditions per place. [2024-11-13 13:18:19,899 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 23 selfloop transitions, 2 changer transitions 22/53 dead transitions. [2024-11-13 13:18:19,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 53 transitions, 252 flow [2024-11-13 13:18:19,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:18:19,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 13:18:19,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-11-13 13:18:19,904 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5027027027027027 [2024-11-13 13:18:19,904 INFO L175 Difference]: Start difference. First operand has 45 places, 30 transitions, 100 flow. Second operand 5 states and 93 transitions. [2024-11-13 13:18:19,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 53 transitions, 252 flow [2024-11-13 13:18:19,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 242 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-13 13:18:19,909 INFO L231 Difference]: Finished difference. Result has 45 places, 24 transitions, 70 flow [2024-11-13 13:18:19,909 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=70, PETRI_PLACES=45, PETRI_TRANSITIONS=24} [2024-11-13 13:18:19,910 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-11-13 13:18:19,910 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 24 transitions, 70 flow [2024-11-13 13:18:19,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:19,911 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:18:19,911 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:18:19,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 13:18:19,911 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-13 13:18:19,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:18:19,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1821015487, now seen corresponding path program 1 times [2024-11-13 13:18:19,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:18:19,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720559358] [2024-11-13 13:18:19,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:18:19,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:18:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:18:20,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:18:20,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:18:20,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720559358] [2024-11-13 13:18:20,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720559358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:18:20,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:18:20,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:18:20,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483976340] [2024-11-13 13:18:20,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:18:20,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:18:20,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:18:20,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:18:20,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:18:20,099 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-11-13 13:18:20,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 24 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:20,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:18:20,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-11-13 13:18:20,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:18:20,227 INFO L124 PetriNetUnfolderBase]: 97/222 cut-off events. [2024-11-13 13:18:20,228 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-11-13 13:18:20,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 222 events. 97/222 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 783 event pairs, 32 based on Foata normal form. 16/232 useless extension candidates. Maximal degree in co-relation 497. Up to 103 conditions per place. [2024-11-13 13:18:20,229 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2024-11-13 13:18:20,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 159 flow [2024-11-13 13:18:20,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:18:20,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 13:18:20,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-11-13 13:18:20,232 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41081081081081083 [2024-11-13 13:18:20,233 INFO L175 Difference]: Start difference. First operand has 45 places, 24 transitions, 70 flow. Second operand 5 states and 76 transitions. [2024-11-13 13:18:20,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 159 flow [2024-11-13 13:18:20,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 153 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 13:18:20,237 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2024-11-13 13:18:20,237 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2024-11-13 13:18:20,238 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, -3 predicate places. [2024-11-13 13:18:20,238 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2024-11-13 13:18:20,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:18:20,242 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 11 remaining) [2024-11-13 13:18:20,243 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2024-11-13 13:18:20,243 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2024-11-13 13:18:20,243 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2024-11-13 13:18:20,244 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 11 remaining) [2024-11-13 13:18:20,244 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 11 remaining) [2024-11-13 13:18:20,244 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 11 remaining) [2024-11-13 13:18:20,244 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2024-11-13 13:18:20,244 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2024-11-13 13:18:20,244 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2024-11-13 13:18:20,244 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2024-11-13 13:18:20,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 13:18:20,245 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-13 13:18:20,252 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-13 13:18:20,253 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 13:18:20,263 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 01:18:20 BasicIcfg [2024-11-13 13:18:20,264 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 13:18:20,264 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 13:18:20,265 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 13:18:20,265 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 13:18:20,266 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:18:16" (3/4) ... [2024-11-13 13:18:20,268 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 13:18:20,272 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-13 13:18:20,272 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-13 13:18:20,272 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-11-13 13:18:20,278 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 41 nodes and edges [2024-11-13 13:18:20,278 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-13 13:18:20,278 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-13 13:18:20,279 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-13 13:18:20,379 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f5552-efcf-45d2-a46c-996e00b3257d/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 13:18:20,380 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f5552-efcf-45d2-a46c-996e00b3257d/bin/uautomizer-verify-qhAvR1uOyd/witness.yml [2024-11-13 13:18:20,380 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 13:18:20,381 INFO L158 Benchmark]: Toolchain (without parser) took 5666.42ms. Allocated memory is still 117.4MB. Free memory was 92.3MB in the beginning and 67.7MB in the end (delta: 24.6MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. [2024-11-13 13:18:20,381 INFO L158 Benchmark]: CDTParser took 0.55ms. Allocated memory is still 167.8MB. Free memory is still 103.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:18:20,382 INFO L158 Benchmark]: CACSL2BoogieTranslator took 688.02ms. Allocated memory is still 117.4MB. Free memory was 92.0MB in the beginning and 72.3MB in the end (delta: 19.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 13:18:20,383 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.81ms. Allocated memory is still 117.4MB. Free memory was 72.3MB in the beginning and 70.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:18:20,383 INFO L158 Benchmark]: Boogie Preprocessor took 60.14ms. Allocated memory is still 117.4MB. Free memory was 70.7MB in the beginning and 68.9MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:18:20,384 INFO L158 Benchmark]: RCFGBuilder took 767.61ms. Allocated memory is still 117.4MB. Free memory was 68.9MB in the beginning and 43.8MB in the end (delta: 25.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-13 13:18:20,385 INFO L158 Benchmark]: TraceAbstraction took 3957.45ms. Allocated memory is still 117.4MB. Free memory was 43.1MB in the beginning and 71.9MB in the end (delta: -28.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:18:20,385 INFO L158 Benchmark]: Witness Printer took 115.31ms. Allocated memory is still 117.4MB. Free memory was 71.9MB in the beginning and 67.7MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:18:20,389 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55ms. Allocated memory is still 167.8MB. Free memory is still 103.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 688.02ms. Allocated memory is still 117.4MB. Free memory was 92.0MB in the beginning and 72.3MB in the end (delta: 19.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.81ms. Allocated memory is still 117.4MB. Free memory was 72.3MB in the beginning and 70.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 60.14ms. Allocated memory is still 117.4MB. Free memory was 70.7MB in the beginning and 68.9MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 767.61ms. Allocated memory is still 117.4MB. Free memory was 68.9MB in the beginning and 43.8MB in the end (delta: 25.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 3957.45ms. Allocated memory is still 117.4MB. Free memory was 43.1MB in the beginning and 71.9MB in the end (delta: -28.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 115.31ms. Allocated memory is still 117.4MB. Free memory was 71.9MB in the beginning and 67.7MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 707]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 707]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 714]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 714]: 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 7 procedures, 67 locations, 11 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: 3.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 229 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 191 mSDsluCounter, 57 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 36 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 571 IncrementalHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 21 mSDtfsCounter, 571 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred in iteration=2, InterpolantAutomatonStates: 28, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 213 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-13 13:18:20,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f5552-efcf-45d2-a46c-996e00b3257d/bin/uautomizer-verify-qhAvR1uOyd/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