./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.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_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/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_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/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_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/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 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:26:55,287 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:26:55,424 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-23 22:26:55,430 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:26:55,431 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:26:55,469 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:26:55,470 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:26:55,471 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:26:55,472 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:26:55,479 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:26:55,480 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:26:55,481 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:26:55,482 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:26:55,483 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:26:55,484 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:26:55,484 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:26:55,485 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:26:55,485 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:26:55,486 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:26:55,486 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:26:55,487 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:26:55,487 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:26:55,488 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:26:55,488 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:26:55,488 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 22:26:55,489 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 22:26:55,489 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:26:55,490 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:26:55,490 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:26:55,491 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:26:55,493 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:26:55,493 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:26:55,493 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:26:55,493 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:26:55,494 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:26:55,494 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:26:55,494 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:26:55,494 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:26:55,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:26:55,495 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:26:55,495 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:26:55,496 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:26:55,496 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:26:55,496 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:26:55,497 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_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 [2023-11-23 22:26:55,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:26:55,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:26:55,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:26:55,814 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:26:55,815 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:26:55,816 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2023-11-23 22:26:59,028 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:26:59,368 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:26:59,369 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2023-11-23 22:26:59,393 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/data/69114959c/3d79b119ad1247b29065f92f146be825/FLAGc9dd31fd9 [2023-11-23 22:26:59,407 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/data/69114959c/3d79b119ad1247b29065f92f146be825 [2023-11-23 22:26:59,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:26:59,411 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:26:59,412 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:26:59,412 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:26:59,419 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:26:59,420 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:26:59" (1/1) ... [2023-11-23 22:26:59,421 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6778fa3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:26:59, skipping insertion in model container [2023-11-23 22:26:59,422 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:26:59" (1/1) ... [2023-11-23 22:26:59,495 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:26:59,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:26:59,977 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:27:00,055 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:27:00,139 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:27:00,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:00 WrapperNode [2023-11-23 22:27:00,140 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:27:00,141 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:27:00,141 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:27:00,141 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:27:00,149 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:00" (1/1) ... [2023-11-23 22:27:00,177 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:00" (1/1) ... [2023-11-23 22:27:00,211 INFO L138 Inliner]: procedures = 244, calls = 55, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2023-11-23 22:27:00,211 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:27:00,212 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:27:00,212 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:27:00,213 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:27:00,224 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:00" (1/1) ... [2023-11-23 22:27:00,225 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:00" (1/1) ... [2023-11-23 22:27:00,239 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:00" (1/1) ... [2023-11-23 22:27:00,263 INFO L189 HeapSplitter]: Split 31 memory accesses to 7 slices as follows [2, 1, 8, 8, 8, 2, 2] [2023-11-23 22:27:00,263 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:00" (1/1) ... [2023-11-23 22:27:00,264 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:00" (1/1) ... [2023-11-23 22:27:00,285 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:00" (1/1) ... [2023-11-23 22:27:00,289 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:00" (1/1) ... [2023-11-23 22:27:00,292 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:00" (1/1) ... [2023-11-23 22:27:00,314 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:00" (1/1) ... [2023-11-23 22:27:00,318 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:27:00,319 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:27:00,320 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:27:00,320 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:27:00,321 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:00" (1/1) ... [2023-11-23 22:27:00,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:27:00,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:27:00,350 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:27:00,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:27:00,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:27:00,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:27:00,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 22:27:00,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 22:27:00,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 22:27:00,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 22:27:00,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 22:27:00,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 22:27:00,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-23 22:27:00,391 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-23 22:27:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 22:27:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 22:27:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 22:27:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 22:27:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 22:27:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 22:27:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 22:27:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-23 22:27:00,393 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-23 22:27:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-23 22:27:00,393 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-23 22:27:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 22:27:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 22:27:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 22:27:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 22:27:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 22:27:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 22:27:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 22:27:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-23 22:27:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:27:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:27:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 22:27:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 22:27:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 22:27:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 22:27:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 22:27:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 22:27:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:27:00,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:27:00,398 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 22:27:00,592 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:27:00,595 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:27:00,925 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:27:01,267 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:27:01,267 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-23 22:27:01,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:27:01 BoogieIcfgContainer [2023-11-23 22:27:01,269 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:27:01,272 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:27:01,272 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:27:01,275 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:27:01,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:26:59" (1/3) ... [2023-11-23 22:27:01,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125d82c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:27:01, skipping insertion in model container [2023-11-23 22:27:01,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:27:00" (2/3) ... [2023-11-23 22:27:01,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125d82c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:27:01, skipping insertion in model container [2023-11-23 22:27:01,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:27:01" (3/3) ... [2023-11-23 22:27:01,279 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i [2023-11-23 22:27:01,288 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 22:27:01,299 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:27:01,300 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-23 22:27:01,300 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 22:27:01,366 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-23 22:27:01,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 51 transitions, 116 flow [2023-11-23 22:27:01,460 INFO L124 PetriNetUnfolderBase]: 4/49 cut-off events. [2023-11-23 22:27:01,460 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-23 22:27:01,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 49 events. 4/49 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 129 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2023-11-23 22:27:01,467 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 51 transitions, 116 flow [2023-11-23 22:27:01,478 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 47 transitions, 103 flow [2023-11-23 22:27:01,497 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:27:01,505 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;@913561f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:27:01,505 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-23 22:27:01,519 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:27:01,519 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-11-23 22:27:01,519 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-23 22:27:01,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:27:01,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:27:01,521 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 22:27:01,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:27:01,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1066793388, now seen corresponding path program 1 times [2023-11-23 22:27:01,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:27:01,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350229213] [2023-11-23 22:27:01,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:27:01,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:27:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:27:01,988 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 22:27:01,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:27:01,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350229213] [2023-11-23 22:27:01,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350229213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:27:01,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:27:01,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:27:01,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937428027] [2023-11-23 22:27:01,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:27:02,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:27:02,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:27:02,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:27:02,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:27:02,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 51 [2023-11-23 22:27:02,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 47 transitions, 103 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 22:27:02,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:27:02,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 51 [2023-11-23 22:27:02,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:27:02,527 INFO L124 PetriNetUnfolderBase]: 832/1629 cut-off events. [2023-11-23 22:27:02,528 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-11-23 22:27:02,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3043 conditions, 1629 events. 832/1629 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 8788 event pairs, 230 based on Foata normal form. 18/1460 useless extension candidates. Maximal degree in co-relation 2842. Up to 897 conditions per place. [2023-11-23 22:27:02,547 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 60 selfloop transitions, 5 changer transitions 3/82 dead transitions. [2023-11-23 22:27:02,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 82 transitions, 318 flow [2023-11-23 22:27:02,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:27:02,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:27:02,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2023-11-23 22:27:02,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6715686274509803 [2023-11-23 22:27:02,563 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 137 transitions. [2023-11-23 22:27:02,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 137 transitions. [2023-11-23 22:27:02,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:27:02,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 137 transitions. [2023-11-23 22:27:02,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 22:27:02,575 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 22:27:02,575 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 22:27:02,578 INFO L175 Difference]: Start difference. First operand has 50 places, 47 transitions, 103 flow. Second operand 4 states and 137 transitions. [2023-11-23 22:27:02,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 82 transitions, 318 flow [2023-11-23 22:27:02,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 82 transitions, 309 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-23 22:27:02,587 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 142 flow [2023-11-23 22:27:02,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2023-11-23 22:27:02,594 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2023-11-23 22:27:02,594 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 142 flow [2023-11-23 22:27:02,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 22:27:02,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:27:02,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:27:02,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:27:02,596 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 22:27:02,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:27:02,597 INFO L85 PathProgramCache]: Analyzing trace with hash -715048968, now seen corresponding path program 1 times [2023-11-23 22:27:02,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:27:02,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645659241] [2023-11-23 22:27:02,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:27:02,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:27:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:27:02,723 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 22:27:02,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:27:02,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645659241] [2023-11-23 22:27:02,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645659241] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:27:02,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:27:02,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:27:02,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937203250] [2023-11-23 22:27:02,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:27:02,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:27:02,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:27:02,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:27:02,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:27:02,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2023-11-23 22:27:02,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 22:27:02,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:27:02,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2023-11-23 22:27:02,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:27:03,164 INFO L124 PetriNetUnfolderBase]: 914/1725 cut-off events. [2023-11-23 22:27:03,165 INFO L125 PetriNetUnfolderBase]: For 424/433 co-relation queries the response was YES. [2023-11-23 22:27:03,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3688 conditions, 1725 events. 914/1725 cut-off events. For 424/433 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 9465 event pairs, 439 based on Foata normal form. 46/1710 useless extension candidates. Maximal degree in co-relation 2996. Up to 1135 conditions per place. [2023-11-23 22:27:03,182 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 65 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2023-11-23 22:27:03,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 85 transitions, 366 flow [2023-11-23 22:27:03,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:27:03,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:27:03,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 140 transitions. [2023-11-23 22:27:03,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6862745098039216 [2023-11-23 22:27:03,195 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 140 transitions. [2023-11-23 22:27:03,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 140 transitions. [2023-11-23 22:27:03,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:27:03,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 140 transitions. [2023-11-23 22:27:03,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 22:27:03,203 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 22:27:03,203 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 22:27:03,203 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 142 flow. Second operand 4 states and 140 transitions. [2023-11-23 22:27:03,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 85 transitions, 366 flow [2023-11-23 22:27:03,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 85 transitions, 366 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 22:27:03,209 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 166 flow [2023-11-23 22:27:03,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2023-11-23 22:27:03,211 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 8 predicate places. [2023-11-23 22:27:03,211 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 166 flow [2023-11-23 22:27:03,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 22:27:03,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:27:03,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:27:03,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 22:27:03,212 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 22:27:03,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:27:03,213 INFO L85 PathProgramCache]: Analyzing trace with hash 915826636, now seen corresponding path program 1 times [2023-11-23 22:27:03,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:27:03,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111245541] [2023-11-23 22:27:03,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:27:03,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:27:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:27:03,440 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 22:27:03,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:27:03,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111245541] [2023-11-23 22:27:03,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111245541] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:27:03,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:27:03,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:27:03,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570185039] [2023-11-23 22:27:03,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:27:03,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:27:03,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:27:03,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:27:03,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:27:03,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 51 [2023-11-23 22:27:03,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 22:27:03,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:27:03,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 51 [2023-11-23 22:27:03,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:27:03,691 INFO L124 PetriNetUnfolderBase]: 453/1103 cut-off events. [2023-11-23 22:27:03,691 INFO L125 PetriNetUnfolderBase]: For 375/387 co-relation queries the response was YES. [2023-11-23 22:27:03,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2370 conditions, 1103 events. 453/1103 cut-off events. For 375/387 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 6204 event pairs, 148 based on Foata normal form. 62/1132 useless extension candidates. Maximal degree in co-relation 1670. Up to 453 conditions per place. [2023-11-23 22:27:03,702 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 40 selfloop transitions, 8 changer transitions 0/67 dead transitions. [2023-11-23 22:27:03,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 67 transitions, 305 flow [2023-11-23 22:27:03,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:27:03,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:27:03,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2023-11-23 22:27:03,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6928104575163399 [2023-11-23 22:27:03,706 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 106 transitions. [2023-11-23 22:27:03,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 106 transitions. [2023-11-23 22:27:03,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:27:03,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 106 transitions. [2023-11-23 22:27:03,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 22:27:03,711 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 22:27:03,711 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 22:27:03,711 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 166 flow. Second operand 3 states and 106 transitions. [2023-11-23 22:27:03,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 67 transitions, 305 flow [2023-11-23 22:27:03,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 67 transitions, 299 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-23 22:27:03,722 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 172 flow [2023-11-23 22:27:03,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2023-11-23 22:27:03,724 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 9 predicate places. [2023-11-23 22:27:03,724 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 172 flow [2023-11-23 22:27:03,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 22:27:03,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:27:03,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:27:03,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 22:27:03,725 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 22:27:03,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:27:03,726 INFO L85 PathProgramCache]: Analyzing trace with hash 543510473, now seen corresponding path program 1 times [2023-11-23 22:27:03,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:27:03,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640646737] [2023-11-23 22:27:03,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:27:03,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:27:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:27:03,943 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 22:27:03,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:27:03,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640646737] [2023-11-23 22:27:03,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640646737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:27:03,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:27:03,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:27:03,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294033364] [2023-11-23 22:27:03,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:27:03,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:27:03,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:27:03,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:27:03,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:27:03,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2023-11-23 22:27:03,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 172 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 22:27:03,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:27:03,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2023-11-23 22:27:03,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:27:04,362 INFO L124 PetriNetUnfolderBase]: 646/1389 cut-off events. [2023-11-23 22:27:04,363 INFO L125 PetriNetUnfolderBase]: For 592/614 co-relation queries the response was YES. [2023-11-23 22:27:04,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3271 conditions, 1389 events. 646/1389 cut-off events. For 592/614 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6949 event pairs, 145 based on Foata normal form. 36/1369 useless extension candidates. Maximal degree in co-relation 2693. Up to 424 conditions per place. [2023-11-23 22:27:04,377 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 85 selfloop transitions, 8 changer transitions 6/111 dead transitions. [2023-11-23 22:27:04,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 111 transitions, 564 flow [2023-11-23 22:27:04,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 22:27:04,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-23 22:27:04,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2023-11-23 22:27:04,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5322128851540616 [2023-11-23 22:27:04,379 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 190 transitions. [2023-11-23 22:27:04,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 190 transitions. [2023-11-23 22:27:04,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:27:04,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 190 transitions. [2023-11-23 22:27:04,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 27.142857142857142) internal successors, (190), 7 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 22:27:04,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 51.0) internal successors, (408), 8 states have internal predecessors, (408), 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 22:27:04,384 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 51.0) internal successors, (408), 8 states have internal predecessors, (408), 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 22:27:04,384 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 172 flow. Second operand 7 states and 190 transitions. [2023-11-23 22:27:04,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 111 transitions, 564 flow [2023-11-23 22:27:04,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 111 transitions, 548 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 22:27:04,396 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 214 flow [2023-11-23 22:27:04,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=214, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2023-11-23 22:27:04,398 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 17 predicate places. [2023-11-23 22:27:04,398 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 214 flow [2023-11-23 22:27:04,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 22:27:04,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:27:04,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:27:04,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 22:27:04,399 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 22:27:04,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:27:04,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1929494968, now seen corresponding path program 1 times [2023-11-23 22:27:04,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:27:04,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736525147] [2023-11-23 22:27:04,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:27:04,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:27:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:27:04,549 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 22:27:04,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:27:04,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736525147] [2023-11-23 22:27:04,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736525147] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:27:04,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:27:04,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:27:04,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816312448] [2023-11-23 22:27:04,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:27:04,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:27:04,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:27:04,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:27:04,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:27:04,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2023-11-23 22:27:04,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 22:27:04,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:27:04,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2023-11-23 22:27:04,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:27:05,034 INFO L124 PetriNetUnfolderBase]: 836/1831 cut-off events. [2023-11-23 22:27:05,035 INFO L125 PetriNetUnfolderBase]: For 1326/1366 co-relation queries the response was YES. [2023-11-23 22:27:05,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4406 conditions, 1831 events. 836/1831 cut-off events. For 1326/1366 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 9497 event pairs, 229 based on Foata normal form. 32/1827 useless extension candidates. Maximal degree in co-relation 3841. Up to 697 conditions per place. [2023-11-23 22:27:05,053 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 89 selfloop transitions, 12 changer transitions 5/118 dead transitions. [2023-11-23 22:27:05,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 118 transitions, 643 flow [2023-11-23 22:27:05,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 22:27:05,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-23 22:27:05,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2023-11-23 22:27:05,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5378151260504201 [2023-11-23 22:27:05,056 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 192 transitions. [2023-11-23 22:27:05,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 192 transitions. [2023-11-23 22:27:05,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:27:05,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 192 transitions. [2023-11-23 22:27:05,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 27.428571428571427) internal successors, (192), 7 states have internal predecessors, (192), 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 22:27:05,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 51.0) internal successors, (408), 8 states have internal predecessors, (408), 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 22:27:05,060 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 51.0) internal successors, (408), 8 states have internal predecessors, (408), 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 22:27:05,060 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 214 flow. Second operand 7 states and 192 transitions. [2023-11-23 22:27:05,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 118 transitions, 643 flow [2023-11-23 22:27:05,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 118 transitions, 637 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:27:05,069 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 308 flow [2023-11-23 22:27:05,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=308, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2023-11-23 22:27:05,072 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 24 predicate places. [2023-11-23 22:27:05,072 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 308 flow [2023-11-23 22:27:05,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 22:27:05,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:27:05,073 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] [2023-11-23 22:27:05,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 22:27:05,073 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 22:27:05,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:27:05,074 INFO L85 PathProgramCache]: Analyzing trace with hash -2036819457, now seen corresponding path program 1 times [2023-11-23 22:27:05,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:27:05,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476547132] [2023-11-23 22:27:05,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:27:05,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:27:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:27:05,196 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 22:27:05,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:27:05,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476547132] [2023-11-23 22:27:05,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476547132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:27:05,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:27:05,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:27:05,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707691417] [2023-11-23 22:27:05,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:27:05,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:27:05,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:27:05,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:27:05,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:27:05,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2023-11-23 22:27:05,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 308 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 22:27:05,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:27:05,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2023-11-23 22:27:05,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:27:05,694 INFO L124 PetriNetUnfolderBase]: 1034/2283 cut-off events. [2023-11-23 22:27:05,694 INFO L125 PetriNetUnfolderBase]: For 2306/2380 co-relation queries the response was YES. [2023-11-23 22:27:05,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5584 conditions, 2283 events. 1034/2283 cut-off events. For 2306/2380 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 13091 event pairs, 584 based on Foata normal form. 80/2294 useless extension candidates. Maximal degree in co-relation 5016. Up to 1342 conditions per place. [2023-11-23 22:27:05,720 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 83 selfloop transitions, 3 changer transitions 0/107 dead transitions. [2023-11-23 22:27:05,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 107 transitions, 681 flow [2023-11-23 22:27:05,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:27:05,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:27:05,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 142 transitions. [2023-11-23 22:27:05,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.696078431372549 [2023-11-23 22:27:05,722 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 142 transitions. [2023-11-23 22:27:05,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 142 transitions. [2023-11-23 22:27:05,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:27:05,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 142 transitions. [2023-11-23 22:27:05,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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 22:27:05,724 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 22:27:05,724 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 22:27:05,724 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 308 flow. Second operand 4 states and 142 transitions. [2023-11-23 22:27:05,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 107 transitions, 681 flow [2023-11-23 22:27:05,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 107 transitions, 661 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-23 22:27:05,735 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 320 flow [2023-11-23 22:27:05,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=320, PETRI_PLACES=76, PETRI_TRANSITIONS=65} [2023-11-23 22:27:05,739 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 26 predicate places. [2023-11-23 22:27:05,739 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 320 flow [2023-11-23 22:27:05,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 22:27:05,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:27:05,740 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:27:05,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 22:27:05,740 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 22:27:05,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:27:05,741 INFO L85 PathProgramCache]: Analyzing trace with hash -795177015, now seen corresponding path program 1 times [2023-11-23 22:27:05,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:27:05,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447765441] [2023-11-23 22:27:05,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:27:05,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:27:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:27:05,926 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:27:05,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:27:05,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447765441] [2023-11-23 22:27:05,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447765441] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:27:05,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450431071] [2023-11-23 22:27:05,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:27:05,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:27:05,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:27:05,934 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:27:05,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 22:27:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:27:06,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 22:27:06,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:27:06,251 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:27:06,251 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:27:06,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450431071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:27:06,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:27:06,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-11-23 22:27:06,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930139833] [2023-11-23 22:27:06,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:27:06,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:27:06,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:27:06,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:27:06,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-23 22:27:06,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2023-11-23 22:27:06,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 65 transitions, 320 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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 22:27:06,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:27:06,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2023-11-23 22:27:06,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:27:06,895 INFO L124 PetriNetUnfolderBase]: 1251/2616 cut-off events. [2023-11-23 22:27:06,895 INFO L125 PetriNetUnfolderBase]: For 2993/3155 co-relation queries the response was YES. [2023-11-23 22:27:06,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7310 conditions, 2616 events. 1251/2616 cut-off events. For 2993/3155 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14660 event pairs, 365 based on Foata normal form. 24/2630 useless extension candidates. Maximal degree in co-relation 6613. Up to 1058 conditions per place. [2023-11-23 22:27:06,928 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 90 selfloop transitions, 20 changer transitions 0/122 dead transitions. [2023-11-23 22:27:06,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 122 transitions, 780 flow [2023-11-23 22:27:06,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 22:27:06,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-23 22:27:06,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2023-11-23 22:27:06,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2023-11-23 22:27:06,930 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 187 transitions. [2023-11-23 22:27:06,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 187 transitions. [2023-11-23 22:27:06,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:27:06,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 187 transitions. [2023-11-23 22:27:06,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 23.375) internal successors, (187), 8 states have internal predecessors, (187), 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 22:27:06,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 51.0) internal successors, (459), 9 states have internal predecessors, (459), 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 22:27:06,933 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 51.0) internal successors, (459), 9 states have internal predecessors, (459), 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 22:27:06,933 INFO L175 Difference]: Start difference. First operand has 76 places, 65 transitions, 320 flow. Second operand 8 states and 187 transitions. [2023-11-23 22:27:06,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 122 transitions, 780 flow [2023-11-23 22:27:06,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 122 transitions, 774 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 22:27:06,945 INFO L231 Difference]: Finished difference. Result has 83 places, 71 transitions, 434 flow [2023-11-23 22:27:06,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=434, PETRI_PLACES=83, PETRI_TRANSITIONS=71} [2023-11-23 22:27:06,946 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 33 predicate places. [2023-11-23 22:27:06,946 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 71 transitions, 434 flow [2023-11-23 22:27:06,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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 22:27:06,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:27:06,946 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:27:06,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 22:27:07,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:27:07,168 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 22:27:07,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:27:07,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1735175015, now seen corresponding path program 1 times [2023-11-23 22:27:07,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:27:07,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202821628] [2023-11-23 22:27:07,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:27:07,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:27:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:27:07,346 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:27:07,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:27:07,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202821628] [2023-11-23 22:27:07,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202821628] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:27:07,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090901488] [2023-11-23 22:27:07,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:27:07,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:27:07,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:27:07,348 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:27:07,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 22:27:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:27:07,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 22:27:07,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:27:07,588 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:27:07,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:27:07,710 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:27:07,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090901488] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:27:07,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:27:07,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2023-11-23 22:27:07,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544939228] [2023-11-23 22:27:07,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:27:07,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 22:27:07,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:27:07,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 22:27:07,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-11-23 22:27:07,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2023-11-23 22:27:07,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 71 transitions, 434 flow. Second operand has 14 states, 14 states have (on average 16.357142857142858) internal successors, (229), 14 states have internal predecessors, (229), 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 22:27:07,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:27:07,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2023-11-23 22:27:07,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:27:08,398 INFO L124 PetriNetUnfolderBase]: 1134/2371 cut-off events. [2023-11-23 22:27:08,398 INFO L125 PetriNetUnfolderBase]: For 4243/4399 co-relation queries the response was YES. [2023-11-23 22:27:08,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6954 conditions, 2371 events. 1134/2371 cut-off events. For 4243/4399 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12962 event pairs, 134 based on Foata normal form. 72/2441 useless extension candidates. Maximal degree in co-relation 6375. Up to 780 conditions per place. [2023-11-23 22:27:08,426 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 83 selfloop transitions, 19 changer transitions 3/116 dead transitions. [2023-11-23 22:27:08,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 116 transitions, 774 flow [2023-11-23 22:27:08,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 22:27:08,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-23 22:27:08,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2023-11-23 22:27:08,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484593837535014 [2023-11-23 22:27:08,428 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 173 transitions. [2023-11-23 22:27:08,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 173 transitions. [2023-11-23 22:27:08,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:27:08,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 173 transitions. [2023-11-23 22:27:08,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 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 22:27:08,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 51.0) internal successors, (408), 8 states have internal predecessors, (408), 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 22:27:08,431 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 51.0) internal successors, (408), 8 states have internal predecessors, (408), 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 22:27:08,431 INFO L175 Difference]: Start difference. First operand has 83 places, 71 transitions, 434 flow. Second operand 7 states and 173 transitions. [2023-11-23 22:27:08,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 116 transitions, 774 flow [2023-11-23 22:27:08,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 116 transitions, 765 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-23 22:27:08,443 INFO L231 Difference]: Finished difference. Result has 83 places, 65 transitions, 413 flow [2023-11-23 22:27:08,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=413, PETRI_PLACES=83, PETRI_TRANSITIONS=65} [2023-11-23 22:27:08,444 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 33 predicate places. [2023-11-23 22:27:08,444 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 65 transitions, 413 flow [2023-11-23 22:27:08,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.357142857142858) internal successors, (229), 14 states have internal predecessors, (229), 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 22:27:08,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:27:08,445 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:27:08,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 22:27:08,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:27:08,646 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 22:27:08,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:27:08,646 INFO L85 PathProgramCache]: Analyzing trace with hash 591878369, now seen corresponding path program 1 times [2023-11-23 22:27:08,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:27:08,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397015373] [2023-11-23 22:27:08,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:27:08,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:27:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:27:08,794 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:27:08,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:27:08,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397015373] [2023-11-23 22:27:08,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397015373] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:27:08,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129604937] [2023-11-23 22:27:08,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:27:08,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:27:08,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:27:08,796 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:27:08,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 22:27:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:27:08,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 22:27:08,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:27:09,026 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:27:09,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:27:09,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129604937] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:27:09,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:27:09,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-23 22:27:09,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307117547] [2023-11-23 22:27:09,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:27:09,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:27:09,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:27:09,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:27:09,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 22:27:09,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2023-11-23 22:27:09,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 65 transitions, 413 flow. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 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 22:27:09,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:27:09,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2023-11-23 22:27:09,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:27:09,564 INFO L124 PetriNetUnfolderBase]: 1040/2289 cut-off events. [2023-11-23 22:27:09,565 INFO L125 PetriNetUnfolderBase]: For 5455/5589 co-relation queries the response was YES. [2023-11-23 22:27:09,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6644 conditions, 2289 events. 1040/2289 cut-off events. For 5455/5589 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 13008 event pairs, 100 based on Foata normal form. 64/2293 useless extension candidates. Maximal degree in co-relation 6448. Up to 1238 conditions per place. [2023-11-23 22:27:09,593 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 107 selfloop transitions, 5 changer transitions 0/131 dead transitions. [2023-11-23 22:27:09,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 131 transitions, 1027 flow [2023-11-23 22:27:09,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:27:09,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 22:27:09,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2023-11-23 22:27:09,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6274509803921569 [2023-11-23 22:27:09,596 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2023-11-23 22:27:09,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2023-11-23 22:27:09,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:27:09,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2023-11-23 22:27:09,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 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 22:27:09,599 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 22:27:09,599 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 22:27:09,599 INFO L175 Difference]: Start difference. First operand has 83 places, 65 transitions, 413 flow. Second operand 6 states and 192 transitions. [2023-11-23 22:27:09,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 131 transitions, 1027 flow [2023-11-23 22:27:09,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 131 transitions, 918 flow, removed 19 selfloop flow, removed 6 redundant places. [2023-11-23 22:27:09,609 INFO L231 Difference]: Finished difference. Result has 81 places, 64 transitions, 359 flow [2023-11-23 22:27:09,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=359, PETRI_PLACES=81, PETRI_TRANSITIONS=64} [2023-11-23 22:27:09,611 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 31 predicate places. [2023-11-23 22:27:09,612 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 64 transitions, 359 flow [2023-11-23 22:27:09,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 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 22:27:09,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:27:09,612 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:27:09,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 22:27:09,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-23 22:27:09,833 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 22:27:09,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:27:09,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1792262325, now seen corresponding path program 1 times [2023-11-23 22:27:09,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:27:09,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244630355] [2023-11-23 22:27:09,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:27:09,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:27:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:27:09,984 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:27:09,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:27:09,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244630355] [2023-11-23 22:27:09,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244630355] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:27:09,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996320643] [2023-11-23 22:27:09,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:27:09,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:27:09,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:27:09,990 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:27:10,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 22:27:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:27:10,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 22:27:10,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:27:10,226 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:27:10,226 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:27:10,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996320643] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:27:10,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:27:10,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-23 22:27:10,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172204697] [2023-11-23 22:27:10,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:27:10,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:27:10,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:27:10,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:27:10,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 22:27:10,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 51 [2023-11-23 22:27:10,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 64 transitions, 359 flow. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 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 22:27:10,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:27:10,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 51 [2023-11-23 22:27:10,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:27:10,753 INFO L124 PetriNetUnfolderBase]: 1065/2346 cut-off events. [2023-11-23 22:27:10,753 INFO L125 PetriNetUnfolderBase]: For 3550/3598 co-relation queries the response was YES. [2023-11-23 22:27:10,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6601 conditions, 2346 events. 1065/2346 cut-off events. For 3550/3598 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 13275 event pairs, 91 based on Foata normal form. 68/2343 useless extension candidates. Maximal degree in co-relation 6016. Up to 982 conditions per place. [2023-11-23 22:27:10,775 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 109 selfloop transitions, 5 changer transitions 0/132 dead transitions. [2023-11-23 22:27:10,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 132 transitions, 909 flow [2023-11-23 22:27:10,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:27:10,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 22:27:10,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 201 transitions. [2023-11-23 22:27:10,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2023-11-23 22:27:10,778 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 201 transitions. [2023-11-23 22:27:10,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 201 transitions. [2023-11-23 22:27:10,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:27:10,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 201 transitions. [2023-11-23 22:27:10,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 33.5) internal successors, (201), 6 states have internal predecessors, (201), 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 22:27:10,780 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 22:27:10,780 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 22:27:10,780 INFO L175 Difference]: Start difference. First operand has 81 places, 64 transitions, 359 flow. Second operand 6 states and 201 transitions. [2023-11-23 22:27:10,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 132 transitions, 909 flow [2023-11-23 22:27:10,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 132 transitions, 890 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-23 22:27:10,795 INFO L231 Difference]: Finished difference. Result has 82 places, 63 transitions, 360 flow [2023-11-23 22:27:10,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=360, PETRI_PLACES=82, PETRI_TRANSITIONS=63} [2023-11-23 22:27:10,797 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 32 predicate places. [2023-11-23 22:27:10,797 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 63 transitions, 360 flow [2023-11-23 22:27:10,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 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 22:27:10,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:27:10,797 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:27:10,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 22:27:11,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 22:27:11,018 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 22:27:11,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:27:11,018 INFO L85 PathProgramCache]: Analyzing trace with hash -840607963, now seen corresponding path program 1 times [2023-11-23 22:27:11,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:27:11,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287832794] [2023-11-23 22:27:11,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:27:11,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:27:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:27:11,100 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 22:27:11,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:27:11,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287832794] [2023-11-23 22:27:11,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287832794] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:27:11,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:27:11,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:27:11,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688900186] [2023-11-23 22:27:11,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:27:11,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:27:11,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:27:11,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:27:11,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:27:11,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2023-11-23 22:27:11,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 63 transitions, 360 flow. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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 22:27:11,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:27:11,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2023-11-23 22:27:11,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:27:11,537 INFO L124 PetriNetUnfolderBase]: 1109/2362 cut-off events. [2023-11-23 22:27:11,538 INFO L125 PetriNetUnfolderBase]: For 4444/4508 co-relation queries the response was YES. [2023-11-23 22:27:11,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6853 conditions, 2362 events. 1109/2362 cut-off events. For 4444/4508 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13153 event pairs, 296 based on Foata normal form. 64/2412 useless extension candidates. Maximal degree in co-relation 4109. Up to 1058 conditions per place. [2023-11-23 22:27:11,561 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 84 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2023-11-23 22:27:11,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 107 transitions, 810 flow [2023-11-23 22:27:11,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:27:11,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:27:11,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2023-11-23 22:27:11,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6274509803921569 [2023-11-23 22:27:11,563 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 128 transitions. [2023-11-23 22:27:11,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 128 transitions. [2023-11-23 22:27:11,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:27:11,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 128 transitions. [2023-11-23 22:27:11,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 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 22:27:11,564 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 22:27:11,565 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 22:27:11,565 INFO L175 Difference]: Start difference. First operand has 82 places, 63 transitions, 360 flow. Second operand 4 states and 128 transitions. [2023-11-23 22:27:11,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 107 transitions, 810 flow [2023-11-23 22:27:11,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 107 transitions, 791 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-23 22:27:11,574 INFO L231 Difference]: Finished difference. Result has 81 places, 63 transitions, 367 flow [2023-11-23 22:27:11,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=367, PETRI_PLACES=81, PETRI_TRANSITIONS=63} [2023-11-23 22:27:11,575 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 31 predicate places. [2023-11-23 22:27:11,575 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 63 transitions, 367 flow [2023-11-23 22:27:11,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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 22:27:11,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:27:11,576 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:27:11,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 22:27:11,576 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 22:27:11,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:27:11,577 INFO L85 PathProgramCache]: Analyzing trace with hash 382602631, now seen corresponding path program 1 times [2023-11-23 22:27:11,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:27:11,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202128989] [2023-11-23 22:27:11,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:27:11,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:27:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:27:11,645 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 22:27:11,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:27:11,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202128989] [2023-11-23 22:27:11,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202128989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:27:11,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:27:11,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:27:11,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669828827] [2023-11-23 22:27:11,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:27:11,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:27:11,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:27:11,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:27:11,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:27:11,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 51 [2023-11-23 22:27:11,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 63 transitions, 367 flow. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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 22:27:11,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:27:11,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 51 [2023-11-23 22:27:11,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:27:12,111 INFO L124 PetriNetUnfolderBase]: 1096/2336 cut-off events. [2023-11-23 22:27:12,111 INFO L125 PetriNetUnfolderBase]: For 4452/4468 co-relation queries the response was YES. [2023-11-23 22:27:12,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6914 conditions, 2336 events. 1096/2336 cut-off events. For 4452/4468 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 12801 event pairs, 227 based on Foata normal form. 68/2397 useless extension candidates. Maximal degree in co-relation 6260. Up to 1143 conditions per place. [2023-11-23 22:27:12,134 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 75 selfloop transitions, 6 changer transitions 0/98 dead transitions. [2023-11-23 22:27:12,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 98 transitions, 708 flow [2023-11-23 22:27:12,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:27:12,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:27:12,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2023-11-23 22:27:12,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6225490196078431 [2023-11-23 22:27:12,136 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 127 transitions. [2023-11-23 22:27:12,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 127 transitions. [2023-11-23 22:27:12,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:27:12,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 127 transitions. [2023-11-23 22:27:12,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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 22:27:12,137 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 22:27:12,138 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 22:27:12,138 INFO L175 Difference]: Start difference. First operand has 81 places, 63 transitions, 367 flow. Second operand 4 states and 127 transitions. [2023-11-23 22:27:12,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 98 transitions, 708 flow [2023-11-23 22:27:12,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 98 transitions, 683 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-23 22:27:12,150 INFO L231 Difference]: Finished difference. Result has 81 places, 63 transitions, 371 flow [2023-11-23 22:27:12,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=371, PETRI_PLACES=81, PETRI_TRANSITIONS=63} [2023-11-23 22:27:12,151 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 31 predicate places. [2023-11-23 22:27:12,151 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 63 transitions, 371 flow [2023-11-23 22:27:12,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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 22:27:12,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:27:12,152 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:27:12,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 22:27:12,152 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-23 22:27:12,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:27:12,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1928480886, now seen corresponding path program 1 times [2023-11-23 22:27:12,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:27:12,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828685177] [2023-11-23 22:27:12,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:27:12,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:27:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:27:12,247 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 22:27:12,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:27:12,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828685177] [2023-11-23 22:27:12,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828685177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:27:12,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:27:12,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:27:12,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272523591] [2023-11-23 22:27:12,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:27:12,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:27:12,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:27:12,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:27:12,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:27:12,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2023-11-23 22:27:12,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 63 transitions, 371 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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 22:27:12,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:27:12,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2023-11-23 22:27:12,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:27:12,688 INFO L124 PetriNetUnfolderBase]: 1000/2163 cut-off events. [2023-11-23 22:27:12,688 INFO L125 PetriNetUnfolderBase]: For 4459/4461 co-relation queries the response was YES. [2023-11-23 22:27:12,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6623 conditions, 2163 events. 1000/2163 cut-off events. For 4459/4461 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 11875 event pairs, 699 based on Foata normal form. 24/2165 useless extension candidates. Maximal degree in co-relation 5916. Up to 1534 conditions per place. [2023-11-23 22:27:12,702 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 0 selfloop transitions, 0 changer transitions 78/78 dead transitions. [2023-11-23 22:27:12,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 78 transitions, 568 flow [2023-11-23 22:27:12,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:27:12,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 22:27:12,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2023-11-23 22:27:12,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-11-23 22:27:12,704 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 119 transitions. [2023-11-23 22:27:12,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 119 transitions. [2023-11-23 22:27:12,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:27:12,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 119 transitions. [2023-11-23 22:27:12,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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 22:27:12,706 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 22:27:12,706 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 22:27:12,707 INFO L175 Difference]: Start difference. First operand has 81 places, 63 transitions, 371 flow. Second operand 5 states and 119 transitions. [2023-11-23 22:27:12,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 78 transitions, 568 flow [2023-11-23 22:27:12,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 78 transitions, 553 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:27:12,718 INFO L231 Difference]: Finished difference. Result has 81 places, 0 transitions, 0 flow [2023-11-23 22:27:12,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=81, PETRI_TRANSITIONS=0} [2023-11-23 22:27:12,719 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 31 predicate places. [2023-11-23 22:27:12,719 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 0 transitions, 0 flow [2023-11-23 22:27:12,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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 22:27:12,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2023-11-23 22:27:12,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-11-23 22:27:12,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-11-23 22:27:12,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-11-23 22:27:12,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-11-23 22:27:12,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-11-23 22:27:12,724 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-11-23 22:27:12,724 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-11-23 22:27:12,724 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2023-11-23 22:27:12,724 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-11-23 22:27:12,724 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-11-23 22:27:12,725 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-11-23 22:27:12,725 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-11-23 22:27:12,725 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-11-23 22:27:12,725 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-11-23 22:27:12,725 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-11-23 22:27:12,726 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-11-23 22:27:12,726 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-11-23 22:27:12,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 22:27:12,726 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:27:12,732 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-23 22:27:12,733 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 22:27:12,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:27:12 BasicIcfg [2023-11-23 22:27:12,739 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 22:27:12,739 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 22:27:12,740 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 22:27:12,740 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 22:27:12,740 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:27:01" (3/4) ... [2023-11-23 22:27:12,742 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 22:27:12,745 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-23 22:27:12,746 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-23 22:27:12,752 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 73 nodes and edges [2023-11-23 22:27:12,752 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-23 22:27:12,753 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-23 22:27:12,753 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-23 22:27:12,843 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/witness.graphml [2023-11-23 22:27:12,844 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/bin/uautomizer-verify-zZY32mL2XJ/witness.yml [2023-11-23 22:27:12,844 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 22:27:12,845 INFO L158 Benchmark]: Toolchain (without parser) took 13434.31ms. Allocated memory was 159.4MB in the beginning and 285.2MB in the end (delta: 125.8MB). Free memory was 126.8MB in the beginning and 192.1MB in the end (delta: -65.3MB). Peak memory consumption was 62.8MB. Max. memory is 16.1GB. [2023-11-23 22:27:12,846 INFO L158 Benchmark]: CDTParser took 1.33ms. Allocated memory is still 130.0MB. Free memory is still 90.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 22:27:12,846 INFO L158 Benchmark]: CACSL2BoogieTranslator took 727.83ms. Allocated memory is still 159.4MB. Free memory was 126.5MB in the beginning and 99.3MB in the end (delta: 27.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-23 22:27:12,847 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.71ms. Allocated memory is still 159.4MB. Free memory was 99.3MB in the beginning and 97.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 22:27:12,847 INFO L158 Benchmark]: Boogie Preprocessor took 106.47ms. Allocated memory is still 159.4MB. Free memory was 97.1MB in the beginning and 93.7MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 22:27:12,847 INFO L158 Benchmark]: RCFGBuilder took 949.25ms. Allocated memory is still 159.4MB. Free memory was 93.7MB in the beginning and 91.5MB in the end (delta: 2.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-23 22:27:12,848 INFO L158 Benchmark]: TraceAbstraction took 11467.21ms. Allocated memory was 159.4MB in the beginning and 285.2MB in the end (delta: 125.8MB). Free memory was 90.8MB in the beginning and 197.3MB in the end (delta: -106.5MB). Peak memory consumption was 143.1MB. Max. memory is 16.1GB. [2023-11-23 22:27:12,849 INFO L158 Benchmark]: Witness Printer took 105.15ms. Allocated memory is still 285.2MB. Free memory was 197.3MB in the beginning and 192.1MB in the end (delta: 5.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 22:27:12,851 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.33ms. Allocated memory is still 130.0MB. Free memory is still 90.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 727.83ms. Allocated memory is still 159.4MB. Free memory was 126.5MB in the beginning and 99.3MB in the end (delta: 27.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.71ms. Allocated memory is still 159.4MB. Free memory was 99.3MB in the beginning and 97.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 106.47ms. Allocated memory is still 159.4MB. Free memory was 97.1MB in the beginning and 93.7MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 949.25ms. Allocated memory is still 159.4MB. Free memory was 93.7MB in the beginning and 91.5MB in the end (delta: 2.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 11467.21ms. Allocated memory was 159.4MB in the beginning and 285.2MB in the end (delta: 125.8MB). Free memory was 90.8MB in the beginning and 197.3MB in the end (delta: -106.5MB). Peak memory consumption was 143.1MB. Max. memory is 16.1GB. * Witness Printer took 105.15ms. Allocated memory is still 285.2MB. Free memory was 197.3MB in the beginning and 192.1MB in the end (delta: 5.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 882]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 882]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 885]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 885]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 897]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 897]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 900]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 900]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 88 locations, 18 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: 11.3s, OverallIterations: 13, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 787 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 730 mSDsluCounter, 162 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 141 mSDsCounter, 74 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2388 IncrementalHoareTripleChecker+Invalid, 2462 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 74 mSolverCounterUnsat, 21 mSDtfsCounter, 2388 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 223 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=434occurred in iteration=7, InterpolantAutomatonStates: 69, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 441 NumberOfCodeBlocks, 441 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 451 ConstructedInterpolants, 0 QuantifiedInterpolants, 1235 SizeOfPredicates, 9 NumberOfNonLiveVariables, 1048 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 18 InterpolantComputations, 12 PerfectInterpolantSequences, 56/94 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 22:27:12,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b93e12-3372-42ef-ae2b-8ad72a6ec6fb/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