./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-wmm/mix020.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c876c9b-714c-4698-8a0b-2e5f2f4d7df9/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c876c9b-714c-4698-8a0b-2e5f2f4d7df9/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_3c876c9b-714c-4698-8a0b-2e5f2f4d7df9/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c876c9b-714c-4698-8a0b-2e5f2f4d7df9/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix020.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c876c9b-714c-4698-8a0b-2e5f2f4d7df9/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_3c876c9b-714c-4698-8a0b-2e5f2f4d7df9/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 035ec41aa2053cde8ee24830f9eb7cf444ea0c142ead33ef0c1fe95c3a7de39e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:30:14,249 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:30:14,357 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c876c9b-714c-4698-8a0b-2e5f2f4d7df9/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-23 22:30:14,371 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:30:14,372 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:30:14,434 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:30:14,434 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:30:14,435 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:30:14,436 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:30:14,436 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:30:14,437 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:30:14,439 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:30:14,440 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:30:14,444 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:30:14,445 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:30:14,445 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:30:14,447 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:30:14,448 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:30:14,448 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:30:14,448 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:30:14,449 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:30:14,449 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:30:14,450 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:30:14,450 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:30:14,451 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 22:30:14,451 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 22:30:14,462 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:30:14,462 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:30:14,463 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:30:14,464 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:30:14,465 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:30:14,465 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:30:14,465 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:30:14,466 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:30:14,466 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:30:14,466 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:30:14,466 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:30:14,466 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:30:14,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:30:14,467 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:30:14,467 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:30:14,467 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:30:14,468 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:30:14,468 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:30:14,469 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_3c876c9b-714c-4698-8a0b-2e5f2f4d7df9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c876c9b-714c-4698-8a0b-2e5f2f4d7df9/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 035ec41aa2053cde8ee24830f9eb7cf444ea0c142ead33ef0c1fe95c3a7de39e [2023-11-23 22:30:14,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:30:14,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:30:14,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:30:14,760 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:30:14,761 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:30:14,762 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c876c9b-714c-4698-8a0b-2e5f2f4d7df9/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/pthread-wmm/mix020.oepc.i [2023-11-23 22:30:17,979 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:30:18,319 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:30:18,320 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c876c9b-714c-4698-8a0b-2e5f2f4d7df9/sv-benchmarks/c/pthread-wmm/mix020.oepc.i [2023-11-23 22:30:18,342 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c876c9b-714c-4698-8a0b-2e5f2f4d7df9/bin/uautomizer-verify-zZY32mL2XJ/data/f3da983a4/d647adc85a9549eeb584e2474a725d3e/FLAG391f380bb [2023-11-23 22:30:18,359 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c876c9b-714c-4698-8a0b-2e5f2f4d7df9/bin/uautomizer-verify-zZY32mL2XJ/data/f3da983a4/d647adc85a9549eeb584e2474a725d3e [2023-11-23 22:30:18,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:30:18,368 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:30:18,371 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:30:18,373 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:30:18,379 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:30:18,380 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:30:18" (1/1) ... [2023-11-23 22:30:18,381 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79bdc548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:18, skipping insertion in model container [2023-11-23 22:30:18,382 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:30:18" (1/1) ... [2023-11-23 22:30:18,456 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:30:18,994 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:30:19,012 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:30:19,126 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:30:19,164 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:30:19,164 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:30:19,173 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:30:19,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:19 WrapperNode [2023-11-23 22:30:19,174 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:30:19,175 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:30:19,175 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:30:19,176 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:30:19,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:19" (1/1) ... [2023-11-23 22:30:19,203 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:19" (1/1) ... [2023-11-23 22:30:19,236 INFO L138 Inliner]: procedures = 177, calls = 70, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 152 [2023-11-23 22:30:19,236 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:30:19,237 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:30:19,237 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:30:19,238 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:30:19,251 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:19" (1/1) ... [2023-11-23 22:30:19,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:19" (1/1) ... [2023-11-23 22:30:19,256 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:19" (1/1) ... [2023-11-23 22:30:19,276 INFO L189 HeapSplitter]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1] [2023-11-23 22:30:19,276 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:19" (1/1) ... [2023-11-23 22:30:19,277 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:19" (1/1) ... [2023-11-23 22:30:19,292 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:19" (1/1) ... [2023-11-23 22:30:19,294 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:19" (1/1) ... [2023-11-23 22:30:19,298 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:19" (1/1) ... [2023-11-23 22:30:19,300 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:19" (1/1) ... [2023-11-23 22:30:19,306 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:30:19,307 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:30:19,307 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:30:19,308 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:30:19,309 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:19" (1/1) ... [2023-11-23 22:30:19,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:30:19,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c876c9b-714c-4698-8a0b-2e5f2f4d7df9/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:19,352 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c876c9b-714c-4698-8a0b-2e5f2f4d7df9/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:30:19,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c876c9b-714c-4698-8a0b-2e5f2f4d7df9/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:30:19,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 22:30:19,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 22:30:19,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 22:30:19,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 22:30:19,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 22:30:19,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 22:30:19,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:30:19,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:30:19,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:30:19,396 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-23 22:30:19,396 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-23 22:30:19,396 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-23 22:30:19,396 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-23 22:30:19,397 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-23 22:30:19,397 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-23 22:30:19,397 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-23 22:30:19,397 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-23 22:30:19,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:30:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 22:30:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 22:30:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 22:30:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 22:30:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 22:30:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:30:19,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:30:19,400 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 22:30:19,568 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:30:19,571 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:30:20,049 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:30:20,388 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:30:20,388 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 22:30:20,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:30:20 BoogieIcfgContainer [2023-11-23 22:30:20,389 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:30:20,393 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:30:20,393 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:30:20,397 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:30:20,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:30:18" (1/3) ... [2023-11-23 22:30:20,398 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48559906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:30:20, skipping insertion in model container [2023-11-23 22:30:20,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:19" (2/3) ... [2023-11-23 22:30:20,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48559906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:30:20, skipping insertion in model container [2023-11-23 22:30:20,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:30:20" (3/3) ... [2023-11-23 22:30:20,402 INFO L112 eAbstractionObserver]: Analyzing ICFG mix020.oepc.i [2023-11-23 22:30:20,411 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 22:30:20,423 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:30:20,424 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-23 22:30:20,424 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 22:30:20,516 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 22:30:20,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 51 transitions, 118 flow [2023-11-23 22:30:20,623 INFO L124 PetriNetUnfolderBase]: 0/47 cut-off events. [2023-11-23 22:30:20,624 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:30:20,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 0/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 123 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-11-23 22:30:20,631 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 51 transitions, 118 flow [2023-11-23 22:30:20,637 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 47 transitions, 106 flow [2023-11-23 22:30:20,658 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:30:20,665 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;@3444ed65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:30:20,665 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-23 22:30:20,675 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:30:20,676 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-23 22:30:20,676 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:30:20,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:30:20,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:20,678 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-23 22:30:20,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:20,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1756969332, now seen corresponding path program 1 times [2023-11-23 22:30:20,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:20,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036018285] [2023-11-23 22:30:20,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:20,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:21,079 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 22:30:21,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:21,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036018285] [2023-11-23 22:30:21,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036018285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:21,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:21,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 22:30:21,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57000254] [2023-11-23 22:30:21,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:21,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:30:21,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:21,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:30:21,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:30:21,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2023-11-23 22:30:21,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 47 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 22:30:21,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:30:21,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2023-11-23 22:30:21,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:30:26,058 INFO L124 PetriNetUnfolderBase]: 22099/29647 cut-off events. [2023-11-23 22:30:26,058 INFO L125 PetriNetUnfolderBase]: For 196/196 co-relation queries the response was YES. [2023-11-23 22:30:26,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59623 conditions, 29647 events. 22099/29647 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 1544. Compared 184930 event pairs, 9017 based on Foata normal form. 0/21801 useless extension candidates. Maximal degree in co-relation 59611. Up to 28869 conditions per place. [2023-11-23 22:30:26,398 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 49 selfloop transitions, 5 changer transitions 0/67 dead transitions. [2023-11-23 22:30:26,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 67 transitions, 263 flow [2023-11-23 22:30:26,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:30:26,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:30:26,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2023-11-23 22:30:26,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.738562091503268 [2023-11-23 22:30:26,415 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 113 transitions. [2023-11-23 22:30:26,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 113 transitions. [2023-11-23 22:30:26,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:30:26,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 113 transitions. [2023-11-23 22:30:26,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 22:30:26,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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 22:30:26,432 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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 22:30:26,434 INFO L175 Difference]: Start difference. First operand has 60 places, 47 transitions, 106 flow. Second operand 3 states and 113 transitions. [2023-11-23 22:30:26,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 67 transitions, 263 flow [2023-11-23 22:30:26,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 67 transitions, 256 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-23 22:30:26,451 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 149 flow [2023-11-23 22:30:26,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2023-11-23 22:30:26,458 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -1 predicate places. [2023-11-23 22:30:26,458 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 149 flow [2023-11-23 22:30:26,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 22:30:26,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:30:26,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:26,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:30:26,460 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-23 22:30:26,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:26,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1623427630, now seen corresponding path program 1 times [2023-11-23 22:30:26,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:26,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046433686] [2023-11-23 22:30:26,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:26,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:26,757 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 22:30:26,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:26,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046433686] [2023-11-23 22:30:26,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046433686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:26,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:26,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:30:26,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236581446] [2023-11-23 22:30:26,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:26,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:30:26,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:26,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:30:26,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:30:26,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2023-11-23 22:30:26,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 149 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 22:30:26,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:30:26,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2023-11-23 22:30:26,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:30:29,448 INFO L124 PetriNetUnfolderBase]: 12417/16801 cut-off events. [2023-11-23 22:30:29,449 INFO L125 PetriNetUnfolderBase]: For 1198/1198 co-relation queries the response was YES. [2023-11-23 22:30:29,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39638 conditions, 16801 events. 12417/16801 cut-off events. For 1198/1198 co-relation queries the response was YES. Maximal size of possible extension queue 902. Compared 100928 event pairs, 4275 based on Foata normal form. 0/14020 useless extension candidates. Maximal degree in co-relation 39627. Up to 16022 conditions per place. [2023-11-23 22:30:29,618 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 45 selfloop transitions, 5 changer transitions 0/63 dead transitions. [2023-11-23 22:30:29,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 63 transitions, 271 flow [2023-11-23 22:30:29,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:30:29,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:30:29,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2023-11-23 22:30:29,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5980392156862745 [2023-11-23 22:30:29,629 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 122 transitions. [2023-11-23 22:30:29,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 122 transitions. [2023-11-23 22:30:29,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:30:29,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 122 transitions. [2023-11-23 22:30:29,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 22:30:29,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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 22:30:29,636 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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 22:30:29,636 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 149 flow. Second operand 4 states and 122 transitions. [2023-11-23 22:30:29,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 63 transitions, 271 flow [2023-11-23 22:30:29,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 266 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 22:30:29,647 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 138 flow [2023-11-23 22:30:29,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2023-11-23 22:30:29,648 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -3 predicate places. [2023-11-23 22:30:29,649 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 138 flow [2023-11-23 22:30:29,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 22:30:29,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:30:29,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:29,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 22:30:29,650 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-23 22:30:29,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:29,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1623427631, now seen corresponding path program 1 times [2023-11-23 22:30:29,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:29,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968058189] [2023-11-23 22:30:29,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:29,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:29,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:29,803 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 22:30:29,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:29,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968058189] [2023-11-23 22:30:29,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968058189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:29,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:29,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:30:29,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684589423] [2023-11-23 22:30:29,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:29,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:30:29,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:29,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:30:29,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:30:29,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2023-11-23 22:30:29,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 22:30:29,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:30:29,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2023-11-23 22:30:29,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:30:32,006 INFO L124 PetriNetUnfolderBase]: 8671/11899 cut-off events. [2023-11-23 22:30:32,006 INFO L125 PetriNetUnfolderBase]: For 1686/1686 co-relation queries the response was YES. [2023-11-23 22:30:32,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27467 conditions, 11899 events. 8671/11899 cut-off events. For 1686/1686 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 69521 event pairs, 1503 based on Foata normal form. 0/10710 useless extension candidates. Maximal degree in co-relation 27455. Up to 8721 conditions per place. [2023-11-23 22:30:32,086 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 63 selfloop transitions, 9 changer transitions 0/85 dead transitions. [2023-11-23 22:30:32,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 85 transitions, 376 flow [2023-11-23 22:30:32,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:30:32,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:30:32,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2023-11-23 22:30:32,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7058823529411765 [2023-11-23 22:30:32,092 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 144 transitions. [2023-11-23 22:30:32,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 144 transitions. [2023-11-23 22:30:32,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:30:32,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 144 transitions. [2023-11-23 22:30:32,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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 22:30:32,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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 22:30:32,098 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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 22:30:32,098 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 138 flow. Second operand 4 states and 144 transitions. [2023-11-23 22:30:32,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 85 transitions, 376 flow [2023-11-23 22:30:32,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 85 transitions, 370 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:30:32,105 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 190 flow [2023-11-23 22:30:32,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2023-11-23 22:30:32,107 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -1 predicate places. [2023-11-23 22:30:32,107 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 190 flow [2023-11-23 22:30:32,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 22:30:32,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:30:32,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:32,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 22:30:32,109 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-23 22:30:32,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:32,111 INFO L85 PathProgramCache]: Analyzing trace with hash -200168057, now seen corresponding path program 1 times [2023-11-23 22:30:32,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:32,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333791918] [2023-11-23 22:30:32,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:32,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:32,312 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 22:30:32,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:32,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333791918] [2023-11-23 22:30:32,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333791918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:32,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:32,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:30:32,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059098963] [2023-11-23 22:30:32,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:32,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:30:32,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:32,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:30:32,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:30:32,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2023-11-23 22:30:32,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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 22:30:32,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:30:32,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2023-11-23 22:30:32,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:30:33,800 INFO L124 PetriNetUnfolderBase]: 6607/9091 cut-off events. [2023-11-23 22:30:33,800 INFO L125 PetriNetUnfolderBase]: For 4236/4236 co-relation queries the response was YES. [2023-11-23 22:30:33,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23620 conditions, 9091 events. 6607/9091 cut-off events. For 4236/4236 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 52148 event pairs, 563 based on Foata normal form. 0/8770 useless extension candidates. Maximal degree in co-relation 23607. Up to 3176 conditions per place. [2023-11-23 22:30:33,874 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 75 selfloop transitions, 13 changer transitions 4/105 dead transitions. [2023-11-23 22:30:33,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 105 transitions, 510 flow [2023-11-23 22:30:33,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:30:33,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 22:30:33,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 181 transitions. [2023-11-23 22:30:33,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7098039215686275 [2023-11-23 22:30:33,876 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 181 transitions. [2023-11-23 22:30:33,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 181 transitions. [2023-11-23 22:30:33,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:30:33,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 181 transitions. [2023-11-23 22:30:33,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 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 22:30:33,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 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 22:30:33,879 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 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 22:30:33,880 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 190 flow. Second operand 5 states and 181 transitions. [2023-11-23 22:30:33,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 105 transitions, 510 flow [2023-11-23 22:30:33,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 105 transitions, 492 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-23 22:30:33,888 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 214 flow [2023-11-23 22:30:33,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=214, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2023-11-23 22:30:33,890 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 2 predicate places. [2023-11-23 22:30:33,890 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 214 flow [2023-11-23 22:30:33,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 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 22:30:33,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:30:33,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:33,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 22:30:33,891 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-23 22:30:33,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:33,891 INFO L85 PathProgramCache]: Analyzing trace with hash 218123164, now seen corresponding path program 1 times [2023-11-23 22:30:33,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:33,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110848594] [2023-11-23 22:30:33,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:33,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:34,090 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 22:30:34,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:34,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110848594] [2023-11-23 22:30:34,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110848594] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:34,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:34,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:30:34,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903599899] [2023-11-23 22:30:34,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:34,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:30:34,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:34,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:30:34,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:30:34,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2023-11-23 22:30:34,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 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 22:30:34,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:30:34,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2023-11-23 22:30:34,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:30:35,564 INFO L124 PetriNetUnfolderBase]: 5935/8179 cut-off events. [2023-11-23 22:30:35,564 INFO L125 PetriNetUnfolderBase]: For 7332/7332 co-relation queries the response was YES. [2023-11-23 22:30:35,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21945 conditions, 8179 events. 5935/8179 cut-off events. For 7332/7332 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 47825 event pairs, 443 based on Foata normal form. 160/8178 useless extension candidates. Maximal degree in co-relation 21931. Up to 3176 conditions per place. [2023-11-23 22:30:35,592 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 0 selfloop transitions, 0 changer transitions 97/97 dead transitions. [2023-11-23 22:30:35,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 97 transitions, 462 flow [2023-11-23 22:30:35,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:30:35,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 22:30:35,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2023-11-23 22:30:35,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6209150326797386 [2023-11-23 22:30:35,597 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 190 transitions. [2023-11-23 22:30:35,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 190 transitions. [2023-11-23 22:30:35,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:30:35,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 190 transitions. [2023-11-23 22:30:35,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 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 22:30:35,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 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 22:30:35,601 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 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 22:30:35,601 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 214 flow. Second operand 6 states and 190 transitions. [2023-11-23 22:30:35,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 97 transitions, 462 flow [2023-11-23 22:30:35,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 97 transitions, 407 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-23 22:30:35,744 INFO L231 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2023-11-23 22:30:35,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=57, PETRI_TRANSITIONS=0} [2023-11-23 22:30:35,746 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -3 predicate places. [2023-11-23 22:30:35,746 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2023-11-23 22:30:35,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 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 22:30:35,753 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2023-11-23 22:30:35,753 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-11-23 22:30:35,754 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-11-23 22:30:35,754 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-11-23 22:30:35,754 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-11-23 22:30:35,755 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-11-23 22:30:35,755 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-11-23 22:30:35,755 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-11-23 22:30:35,755 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 20 remaining) [2023-11-23 22:30:35,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 20 remaining) [2023-11-23 22:30:35,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 20 remaining) [2023-11-23 22:30:35,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 20 remaining) [2023-11-23 22:30:35,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2023-11-23 22:30:35,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-11-23 22:30:35,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2023-11-23 22:30:35,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-11-23 22:30:35,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-11-23 22:30:35,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-11-23 22:30:35,765 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-11-23 22:30:35,766 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2023-11-23 22:30:35,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 22:30:35,767 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-23 22:30:35,775 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-23 22:30:35,775 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 22:30:35,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:30:35 BasicIcfg [2023-11-23 22:30:35,785 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 22:30:35,786 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 22:30:35,786 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 22:30:35,786 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 22:30:35,787 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:30:20" (3/4) ... [2023-11-23 22:30:35,789 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 22:30:35,792 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-23 22:30:35,792 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-23 22:30:35,792 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-23 22:30:35,793 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2023-11-23 22:30:35,803 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 88 nodes and edges [2023-11-23 22:30:35,803 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-11-23 22:30:35,803 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-23 22:30:35,804 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-23 22:30:35,927 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c876c9b-714c-4698-8a0b-2e5f2f4d7df9/bin/uautomizer-verify-zZY32mL2XJ/witness.graphml [2023-11-23 22:30:35,928 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c876c9b-714c-4698-8a0b-2e5f2f4d7df9/bin/uautomizer-verify-zZY32mL2XJ/witness.yml [2023-11-23 22:30:35,928 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 22:30:35,929 INFO L158 Benchmark]: Toolchain (without parser) took 17561.27ms. Allocated memory was 142.6MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 95.6MB in the beginning and 707.2MB in the end (delta: -611.6MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2023-11-23 22:30:35,929 INFO L158 Benchmark]: CDTParser took 1.26ms. Allocated memory is still 142.6MB. Free memory is still 109.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 22:30:35,930 INFO L158 Benchmark]: CACSL2BoogieTranslator took 803.52ms. Allocated memory is still 142.6MB. Free memory was 95.3MB in the beginning and 70.5MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-23 22:30:35,930 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.47ms. Allocated memory is still 142.6MB. Free memory was 70.5MB in the beginning and 68.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 22:30:35,930 INFO L158 Benchmark]: Boogie Preprocessor took 69.15ms. Allocated memory is still 142.6MB. Free memory was 68.4MB in the beginning and 64.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 22:30:35,931 INFO L158 Benchmark]: RCFGBuilder took 1082.57ms. Allocated memory was 142.6MB in the beginning and 209.7MB in the end (delta: 67.1MB). Free memory was 64.2MB in the beginning and 143.5MB in the end (delta: -79.3MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2023-11-23 22:30:35,931 INFO L158 Benchmark]: TraceAbstraction took 15391.88ms. Allocated memory was 209.7MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 142.4MB in the beginning and 712.4MB in the end (delta: -570.0MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2023-11-23 22:30:35,932 INFO L158 Benchmark]: Witness Printer took 142.66ms. Allocated memory is still 1.9GB. Free memory was 712.4MB in the beginning and 707.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 22:30:35,935 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.26ms. Allocated memory is still 142.6MB. Free memory is still 109.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 803.52ms. Allocated memory is still 142.6MB. Free memory was 95.3MB in the beginning and 70.5MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.47ms. Allocated memory is still 142.6MB. Free memory was 70.5MB in the beginning and 68.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.15ms. Allocated memory is still 142.6MB. Free memory was 68.4MB in the beginning and 64.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1082.57ms. Allocated memory was 142.6MB in the beginning and 209.7MB in the end (delta: 67.1MB). Free memory was 64.2MB in the beginning and 143.5MB in the end (delta: -79.3MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * TraceAbstraction took 15391.88ms. Allocated memory was 209.7MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 142.4MB in the beginning and 712.4MB in the end (delta: -570.0MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Witness Printer took 142.66ms. Allocated memory is still 1.9GB. Free memory was 712.4MB in the beginning and 707.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 775]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 775]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 795]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 795]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 815]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 815]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 851]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 851]: 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 9 procedures, 93 locations, 20 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: 15.2s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 13.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 228 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 218 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 473 IncrementalHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 2 mSDtfsCounter, 473 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=214occurred in iteration=4, InterpolantAutomatonStates: 22, 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, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 240 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-23 22:30:35,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c876c9b-714c-4698-8a0b-2e5f2f4d7df9/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