./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3f159c-4902-4455-b7fc-52b8ca4499b4/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3f159c-4902-4455-b7fc-52b8ca4499b4/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3f159c-4902-4455-b7fc-52b8ca4499b4/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3f159c-4902-4455-b7fc-52b8ca4499b4/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3f159c-4902-4455-b7fc-52b8ca4499b4/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3f159c-4902-4455-b7fc-52b8ca4499b4/bin/uautomizer-verify-uCwYo4JHxu --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 d87195cdf1d0fd4bcadf67f37be6f46388ea22a2ec77b383d012327e126a2173 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:47:07,135 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:47:07,257 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3f159c-4902-4455-b7fc-52b8ca4499b4/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:47:07,265 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:47:07,266 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:47:07,303 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:47:07,304 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:47:07,304 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:47:07,305 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:47:07,310 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:47:07,311 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:47:07,311 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:47:07,312 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:47:07,313 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:47:07,313 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:47:07,313 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:47:07,314 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:47:07,314 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:47:07,315 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:47:07,315 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:47:07,315 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:47:07,316 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:47:07,316 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:47:07,317 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:47:07,317 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:47:07,318 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:47:07,318 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:47:07,319 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:47:07,319 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:47:07,320 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:47:07,321 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:07,321 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:47:07,322 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:47:07,322 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:47:07,322 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:47:07,322 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:47:07,322 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:47:07,323 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:47:07,323 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:47:07,323 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:47:07,323 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:47:07,324 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_db3f159c-4902-4455-b7fc-52b8ca4499b4/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3f159c-4902-4455-b7fc-52b8ca4499b4/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d87195cdf1d0fd4bcadf67f37be6f46388ea22a2ec77b383d012327e126a2173 [2023-11-19 07:47:07,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:47:07,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:47:07,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:47:07,688 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:47:07,689 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:47:07,690 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3f159c-4902-4455-b7fc-52b8ca4499b4/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2023-11-19 07:47:10,803 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:47:11,074 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:47:11,075 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3f159c-4902-4455-b7fc-52b8ca4499b4/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2023-11-19 07:47:11,088 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3f159c-4902-4455-b7fc-52b8ca4499b4/bin/uautomizer-verify-uCwYo4JHxu/data/072e22d03/376e1bf078964874a91ca871dfc59aee/FLAGb5050c87e [2023-11-19 07:47:11,104 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3f159c-4902-4455-b7fc-52b8ca4499b4/bin/uautomizer-verify-uCwYo4JHxu/data/072e22d03/376e1bf078964874a91ca871dfc59aee [2023-11-19 07:47:11,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:47:11,111 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:47:11,115 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:11,115 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:47:11,120 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:47:11,121 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:11" (1/1) ... [2023-11-19 07:47:11,122 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4906f5fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:11, skipping insertion in model container [2023-11-19 07:47:11,123 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:11" (1/1) ... [2023-11-19 07:47:11,162 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:47:11,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:11,398 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:47:11,429 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:11,438 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:47:11,438 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:47:11,446 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:47:11,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:11 WrapperNode [2023-11-19 07:47:11,447 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:11,448 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:11,449 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:47:11,449 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:47:11,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:11" (1/1) ... [2023-11-19 07:47:11,468 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:11" (1/1) ... [2023-11-19 07:47:11,505 INFO L138 Inliner]: procedures = 23, calls = 71, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 227 [2023-11-19 07:47:11,509 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:11,510 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:47:11,511 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:47:11,511 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:47:11,520 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:11" (1/1) ... [2023-11-19 07:47:11,520 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:11" (1/1) ... [2023-11-19 07:47:11,524 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:11" (1/1) ... [2023-11-19 07:47:11,525 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:11" (1/1) ... [2023-11-19 07:47:11,532 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:11" (1/1) ... [2023-11-19 07:47:11,540 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:11" (1/1) ... [2023-11-19 07:47:11,543 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:11" (1/1) ... [2023-11-19 07:47:11,545 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:11" (1/1) ... [2023-11-19 07:47:11,549 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:47:11,558 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:47:11,558 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:47:11,559 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:47:11,560 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:11" (1/1) ... [2023-11-19 07:47:11,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:11,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3f159c-4902-4455-b7fc-52b8ca4499b4/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:11,609 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3f159c-4902-4455-b7fc-52b8ca4499b4/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:47:11,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3f159c-4902-4455-b7fc-52b8ca4499b4/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:47:11,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:47:11,653 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:47:11,653 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:47:11,653 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:47:11,654 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:47:11,654 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:47:11,654 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:47:11,654 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-19 07:47:11,654 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-19 07:47:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:47:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:47:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:47:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:47:11,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:47:11,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:47:11,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:47:11,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:47:11,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:47:11,660 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:47:11,776 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:47:11,779 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:47:12,152 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:47:12,352 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:47:12,353 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:47:12,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:12 BoogieIcfgContainer [2023-11-19 07:47:12,357 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:47:12,361 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:47:12,361 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:47:12,364 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:47:12,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:47:11" (1/3) ... [2023-11-19 07:47:12,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@736e0255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:12, skipping insertion in model container [2023-11-19 07:47:12,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:11" (2/3) ... [2023-11-19 07:47:12,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@736e0255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:12, skipping insertion in model container [2023-11-19 07:47:12,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:12" (3/3) ... [2023-11-19 07:47:12,368 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2023-11-19 07:47:12,378 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:47:12,390 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:47:12,391 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-19 07:47:12,391 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:47:12,506 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 07:47:12,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 168 transitions, 364 flow [2023-11-19 07:47:12,638 INFO L124 PetriNetUnfolderBase]: 2/164 cut-off events. [2023-11-19 07:47:12,638 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 07:47:12,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 164 events. 2/164 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 127 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 120. Up to 2 conditions per place. [2023-11-19 07:47:12,649 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 168 transitions, 364 flow [2023-11-19 07:47:12,656 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 138 transitions, 297 flow [2023-11-19 07:47:12,663 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:47:12,674 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 150 places, 138 transitions, 297 flow [2023-11-19 07:47:12,677 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 150 places, 138 transitions, 297 flow [2023-11-19 07:47:12,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 138 transitions, 297 flow [2023-11-19 07:47:12,720 INFO L124 PetriNetUnfolderBase]: 1/138 cut-off events. [2023-11-19 07:47:12,720 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:47:12,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 138 events. 1/138 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 125 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 120. Up to 2 conditions per place. [2023-11-19 07:47:12,724 INFO L119 LiptonReduction]: Number of co-enabled transitions 3012 [2023-11-19 07:47:18,866 INFO L134 LiptonReduction]: Checked pairs total: 15369 [2023-11-19 07:47:18,866 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-11-19 07:47:18,882 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:47:18,889 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;@1985abbb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:47:18,890 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-11-19 07:47:18,892 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:47:18,892 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-19 07:47:18,893 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:47:18,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:18,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:47:18,894 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:47:18,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:18,900 INFO L85 PathProgramCache]: Analyzing trace with hash 681632, now seen corresponding path program 1 times [2023-11-19 07:47:18,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:18,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879862607] [2023-11-19 07:47:18,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:18,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:19,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:19,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:19,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879862607] [2023-11-19 07:47:19,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879862607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:19,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:19,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:47:19,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835724405] [2023-11-19 07:47:19,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:19,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:19,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:19,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:19,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:19,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 269 [2023-11-19 07:47:19,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 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) [2023-11-19 07:47:19,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:19,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 269 [2023-11-19 07:47:19,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:24,554 INFO L124 PetriNetUnfolderBase]: 29677/41306 cut-off events. [2023-11-19 07:47:24,555 INFO L125 PetriNetUnfolderBase]: For 2151/2151 co-relation queries the response was YES. [2023-11-19 07:47:24,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82968 conditions, 41306 events. 29677/41306 cut-off events. For 2151/2151 co-relation queries the response was YES. Maximal size of possible extension queue 2719. Compared 288147 event pairs, 23032 based on Foata normal form. 0/22098 useless extension candidates. Maximal degree in co-relation 82092. Up to 39966 conditions per place. [2023-11-19 07:47:24,946 INFO L140 encePairwiseOnDemand]: 256/269 looper letters, 49 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2023-11-19 07:47:24,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 59 transitions, 256 flow [2023-11-19 07:47:24,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:24,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:24,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2023-11-19 07:47:24,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5489467162329615 [2023-11-19 07:47:24,966 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2023-11-19 07:47:24,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2023-11-19 07:47:24,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:24,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2023-11-19 07:47:24,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 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) [2023-11-19 07:47:24,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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) [2023-11-19 07:47:24,984 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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) [2023-11-19 07:47:24,987 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 117 flow. Second operand 3 states and 443 transitions. [2023-11-19 07:47:24,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 59 transitions, 256 flow [2023-11-19 07:47:25,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 59 transitions, 238 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-19 07:47:25,019 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 151 flow [2023-11-19 07:47:25,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2023-11-19 07:47:25,026 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2023-11-19 07:47:25,026 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 151 flow [2023-11-19 07:47:25,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 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) [2023-11-19 07:47:25,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:25,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:47:25,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:47:25,028 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:47:25,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:25,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1165464342, now seen corresponding path program 1 times [2023-11-19 07:47:25,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:25,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027667686] [2023-11-19 07:47:25,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:25,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:25,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:25,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:25,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027667686] [2023-11-19 07:47:25,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027667686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:25,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:25,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:25,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739191435] [2023-11-19 07:47:25,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:25,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:25,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:25,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:25,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:25,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 269 [2023-11-19 07:47:25,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 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) [2023-11-19 07:47:25,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:25,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 269 [2023-11-19 07:47:25,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:27,667 INFO L124 PetriNetUnfolderBase]: 17791/24942 cut-off events. [2023-11-19 07:47:27,668 INFO L125 PetriNetUnfolderBase]: For 2626/2626 co-relation queries the response was YES. [2023-11-19 07:47:27,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56438 conditions, 24942 events. 17791/24942 cut-off events. For 2626/2626 co-relation queries the response was YES. Maximal size of possible extension queue 1671. Compared 168033 event pairs, 16781 based on Foata normal form. 0/14802 useless extension candidates. Maximal degree in co-relation 40868. Up to 24138 conditions per place. [2023-11-19 07:47:27,841 INFO L140 encePairwiseOnDemand]: 264/269 looper letters, 42 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2023-11-19 07:47:27,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 48 transitions, 221 flow [2023-11-19 07:47:27,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:27,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:27,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 424 transitions. [2023-11-19 07:47:27,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254027261462205 [2023-11-19 07:47:27,849 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 424 transitions. [2023-11-19 07:47:27,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 424 transitions. [2023-11-19 07:47:27,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:27,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 424 transitions. [2023-11-19 07:47:27,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 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) [2023-11-19 07:47:27,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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) [2023-11-19 07:47:27,859 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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) [2023-11-19 07:47:27,860 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 151 flow. Second operand 3 states and 424 transitions. [2023-11-19 07:47:27,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 48 transitions, 221 flow [2023-11-19 07:47:27,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 48 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:47:27,868 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 132 flow [2023-11-19 07:47:27,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-11-19 07:47:27,869 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -7 predicate places. [2023-11-19 07:47:27,870 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 132 flow [2023-11-19 07:47:27,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 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) [2023-11-19 07:47:27,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:27,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:47:27,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:47:27,871 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:47:27,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:27,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1165454111, now seen corresponding path program 1 times [2023-11-19 07:47:27,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:27,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244372589] [2023-11-19 07:47:27,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:27,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:28,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:28,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:28,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244372589] [2023-11-19 07:47:28,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244372589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:28,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:28,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:28,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112596764] [2023-11-19 07:47:28,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:28,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:47:28,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:28,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:47:28,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:47:28,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 269 [2023-11-19 07:47:28,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 128.5) internal successors, (514), 4 states have internal predecessors, (514), 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) [2023-11-19 07:47:28,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:28,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 269 [2023-11-19 07:47:28,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:30,299 INFO L124 PetriNetUnfolderBase]: 16537/23482 cut-off events. [2023-11-19 07:47:30,299 INFO L125 PetriNetUnfolderBase]: For 2467/2467 co-relation queries the response was YES. [2023-11-19 07:47:30,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52119 conditions, 23482 events. 16537/23482 cut-off events. For 2467/2467 co-relation queries the response was YES. Maximal size of possible extension queue 1665. Compared 161940 event pairs, 7312 based on Foata normal form. 0/14178 useless extension candidates. Maximal degree in co-relation 52111. Up to 22290 conditions per place. [2023-11-19 07:47:30,575 INFO L140 encePairwiseOnDemand]: 260/269 looper letters, 68 selfloop transitions, 9 changer transitions 0/82 dead transitions. [2023-11-19 07:47:30,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 82 transitions, 370 flow [2023-11-19 07:47:30,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:47:30,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:47:30,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 589 transitions. [2023-11-19 07:47:30,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5473977695167286 [2023-11-19 07:47:30,579 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 589 transitions. [2023-11-19 07:47:30,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 589 transitions. [2023-11-19 07:47:30,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:30,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 589 transitions. [2023-11-19 07:47:30,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 147.25) internal successors, (589), 4 states have internal predecessors, (589), 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) [2023-11-19 07:47:30,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 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) [2023-11-19 07:47:30,587 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 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) [2023-11-19 07:47:30,587 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 132 flow. Second operand 4 states and 589 transitions. [2023-11-19 07:47:30,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 82 transitions, 370 flow [2023-11-19 07:47:30,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 82 transitions, 369 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:47:30,592 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 189 flow [2023-11-19 07:47:30,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=189, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2023-11-19 07:47:30,594 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2023-11-19 07:47:30,594 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 189 flow [2023-11-19 07:47:30,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.5) internal successors, (514), 4 states have internal predecessors, (514), 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) [2023-11-19 07:47:30,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:30,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:30,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:47:30,601 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:47:30,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:30,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1841270684, now seen corresponding path program 1 times [2023-11-19 07:47:30,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:30,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761152953] [2023-11-19 07:47:30,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:30,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:30,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:30,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:30,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:30,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761152953] [2023-11-19 07:47:30,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761152953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:30,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:30,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:47:30,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207209115] [2023-11-19 07:47:30,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:30,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:30,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:30,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:30,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:30,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 269 [2023-11-19 07:47:30,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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) [2023-11-19 07:47:30,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:30,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 269 [2023-11-19 07:47:30,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:31,872 INFO L124 PetriNetUnfolderBase]: 8777/12599 cut-off events. [2023-11-19 07:47:31,873 INFO L125 PetriNetUnfolderBase]: For 4998/4998 co-relation queries the response was YES. [2023-11-19 07:47:31,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32028 conditions, 12599 events. 8777/12599 cut-off events. For 4998/4998 co-relation queries the response was YES. Maximal size of possible extension queue 863. Compared 74595 event pairs, 2686 based on Foata normal form. 0/8181 useless extension candidates. Maximal degree in co-relation 32018. Up to 10952 conditions per place. [2023-11-19 07:47:31,975 INFO L140 encePairwiseOnDemand]: 256/269 looper letters, 69 selfloop transitions, 5 changer transitions 0/79 dead transitions. [2023-11-19 07:47:31,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 79 transitions, 447 flow [2023-11-19 07:47:31,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:31,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:31,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 451 transitions. [2023-11-19 07:47:31,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5588599752168525 [2023-11-19 07:47:31,979 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 451 transitions. [2023-11-19 07:47:31,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 451 transitions. [2023-11-19 07:47:31,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:31,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 451 transitions. [2023-11-19 07:47:31,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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) [2023-11-19 07:47:31,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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) [2023-11-19 07:47:31,986 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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) [2023-11-19 07:47:31,987 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 189 flow. Second operand 3 states and 451 transitions. [2023-11-19 07:47:31,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 79 transitions, 447 flow [2023-11-19 07:47:31,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 79 transitions, 417 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-19 07:47:31,993 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 218 flow [2023-11-19 07:47:31,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2023-11-19 07:47:31,996 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2023-11-19 07:47:31,996 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 218 flow [2023-11-19 07:47:31,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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) [2023-11-19 07:47:31,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:31,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:31,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:47:31,998 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:47:31,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:31,998 INFO L85 PathProgramCache]: Analyzing trace with hash 473611315, now seen corresponding path program 1 times [2023-11-19 07:47:31,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:31,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010617840] [2023-11-19 07:47:32,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:32,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:32,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:32,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:32,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010617840] [2023-11-19 07:47:32,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010617840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:32,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:32,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:32,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429373823] [2023-11-19 07:47:32,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:32,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:47:32,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:32,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:47:32,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:47:32,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 269 [2023-11-19 07:47:32,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 218 flow. Second operand has 5 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 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) [2023-11-19 07:47:32,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:32,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 269 [2023-11-19 07:47:32,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:33,263 INFO L124 PetriNetUnfolderBase]: 7061/10522 cut-off events. [2023-11-19 07:47:33,264 INFO L125 PetriNetUnfolderBase]: For 4521/4521 co-relation queries the response was YES. [2023-11-19 07:47:33,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29572 conditions, 10522 events. 7061/10522 cut-off events. For 4521/4521 co-relation queries the response was YES. Maximal size of possible extension queue 775. Compared 69301 event pairs, 1572 based on Foata normal form. 0/7152 useless extension candidates. Maximal degree in co-relation 29561. Up to 9288 conditions per place. [2023-11-19 07:47:33,352 INFO L140 encePairwiseOnDemand]: 260/269 looper letters, 91 selfloop transitions, 13 changer transitions 0/109 dead transitions. [2023-11-19 07:47:33,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 109 transitions, 608 flow [2023-11-19 07:47:33,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:47:33,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:47:33,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 735 transitions. [2023-11-19 07:47:33,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5464684014869888 [2023-11-19 07:47:33,357 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 735 transitions. [2023-11-19 07:47:33,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 735 transitions. [2023-11-19 07:47:33,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:33,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 735 transitions. [2023-11-19 07:47:33,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 147.0) internal successors, (735), 5 states have internal predecessors, (735), 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) [2023-11-19 07:47:33,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 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) [2023-11-19 07:47:33,368 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 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) [2023-11-19 07:47:33,368 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 218 flow. Second operand 5 states and 735 transitions. [2023-11-19 07:47:33,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 109 transitions, 608 flow [2023-11-19 07:47:33,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 109 transitions, 595 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:47:33,376 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 287 flow [2023-11-19 07:47:33,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=287, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2023-11-19 07:47:33,380 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2023-11-19 07:47:33,380 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 287 flow [2023-11-19 07:47:33,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 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) [2023-11-19 07:47:33,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:33,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:33,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:47:33,382 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:47:33,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:33,382 INFO L85 PathProgramCache]: Analyzing trace with hash 2109167324, now seen corresponding path program 1 times [2023-11-19 07:47:33,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:33,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957840876] [2023-11-19 07:47:33,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:33,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:33,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:33,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:33,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957840876] [2023-11-19 07:47:33,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957840876] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:33,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:33,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:47:33,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338572609] [2023-11-19 07:47:33,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:33,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:47:33,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:33,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:47:33,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:47:33,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 269 [2023-11-19 07:47:33,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 287 flow. Second operand has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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) [2023-11-19 07:47:33,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:33,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 269 [2023-11-19 07:47:33,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:34,537 INFO L124 PetriNetUnfolderBase]: 5301/8064 cut-off events. [2023-11-19 07:47:34,538 INFO L125 PetriNetUnfolderBase]: For 7471/7471 co-relation queries the response was YES. [2023-11-19 07:47:34,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23646 conditions, 8064 events. 5301/8064 cut-off events. For 7471/7471 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 52097 event pairs, 120 based on Foata normal form. 0/5978 useless extension candidates. Maximal degree in co-relation 23633. Up to 4188 conditions per place. [2023-11-19 07:47:34,601 INFO L140 encePairwiseOnDemand]: 260/269 looper letters, 110 selfloop transitions, 17 changer transitions 0/132 dead transitions. [2023-11-19 07:47:34,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 132 transitions, 748 flow [2023-11-19 07:47:34,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:47:34,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:47:34,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 881 transitions. [2023-11-19 07:47:34,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5458488228004956 [2023-11-19 07:47:34,607 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 881 transitions. [2023-11-19 07:47:34,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 881 transitions. [2023-11-19 07:47:34,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:34,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 881 transitions. [2023-11-19 07:47:34,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 146.83333333333334) internal successors, (881), 6 states have internal predecessors, (881), 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) [2023-11-19 07:47:34,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 269.0) internal successors, (1883), 7 states have internal predecessors, (1883), 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) [2023-11-19 07:47:34,619 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 269.0) internal successors, (1883), 7 states have internal predecessors, (1883), 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) [2023-11-19 07:47:34,619 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 287 flow. Second operand 6 states and 881 transitions. [2023-11-19 07:47:34,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 132 transitions, 748 flow [2023-11-19 07:47:34,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 132 transitions, 714 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-11-19 07:47:34,633 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 255 flow [2023-11-19 07:47:34,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=255, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2023-11-19 07:47:34,634 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -1 predicate places. [2023-11-19 07:47:34,635 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 255 flow [2023-11-19 07:47:34,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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) [2023-11-19 07:47:34,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:34,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:34,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:47:34,636 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:47:34,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:34,637 INFO L85 PathProgramCache]: Analyzing trace with hash 489939099, now seen corresponding path program 1 times [2023-11-19 07:47:34,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:34,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947117236] [2023-11-19 07:47:34,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:34,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:34,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:34,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:34,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947117236] [2023-11-19 07:47:34,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947117236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:34,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:34,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:34,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342331085] [2023-11-19 07:47:34,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:34,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:47:34,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:34,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:47:34,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:47:34,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 269 [2023-11-19 07:47:34,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 255 flow. Second operand has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 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) [2023-11-19 07:47:34,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:34,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 269 [2023-11-19 07:47:34,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:35,469 INFO L124 PetriNetUnfolderBase]: 3673/5696 cut-off events. [2023-11-19 07:47:35,469 INFO L125 PetriNetUnfolderBase]: For 7457/7457 co-relation queries the response was YES. [2023-11-19 07:47:35,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16898 conditions, 5696 events. 3673/5696 cut-off events. For 7457/7457 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 33448 event pairs, 660 based on Foata normal form. 0/4700 useless extension candidates. Maximal degree in co-relation 16885. Up to 2458 conditions per place. [2023-11-19 07:47:35,511 INFO L140 encePairwiseOnDemand]: 252/269 looper letters, 101 selfloop transitions, 25 changer transitions 0/131 dead transitions. [2023-11-19 07:47:35,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 131 transitions, 826 flow [2023-11-19 07:47:35,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:47:35,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:47:35,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 740 transitions. [2023-11-19 07:47:35,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.550185873605948 [2023-11-19 07:47:35,515 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 740 transitions. [2023-11-19 07:47:35,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 740 transitions. [2023-11-19 07:47:35,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:35,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 740 transitions. [2023-11-19 07:47:35,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 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) [2023-11-19 07:47:35,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 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) [2023-11-19 07:47:35,524 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 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) [2023-11-19 07:47:35,524 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 255 flow. Second operand 5 states and 740 transitions. [2023-11-19 07:47:35,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 131 transitions, 826 flow [2023-11-19 07:47:35,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 131 transitions, 667 flow, removed 36 selfloop flow, removed 7 redundant places. [2023-11-19 07:47:35,543 INFO L231 Difference]: Finished difference. Result has 59 places, 72 transitions, 366 flow [2023-11-19 07:47:35,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=366, PETRI_PLACES=59, PETRI_TRANSITIONS=72} [2023-11-19 07:47:35,544 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -2 predicate places. [2023-11-19 07:47:35,544 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 72 transitions, 366 flow [2023-11-19 07:47:35,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 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) [2023-11-19 07:47:35,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:35,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:35,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:47:35,546 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:47:35,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:35,546 INFO L85 PathProgramCache]: Analyzing trace with hash -644514794, now seen corresponding path program 1 times [2023-11-19 07:47:35,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:35,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641484011] [2023-11-19 07:47:35,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:35,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:35,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:35,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:35,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641484011] [2023-11-19 07:47:35,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641484011] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:35,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:35,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:35,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270149201] [2023-11-19 07:47:35,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:35,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:35,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:35,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:35,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:35,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 269 [2023-11-19 07:47:35,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 72 transitions, 366 flow. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 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) [2023-11-19 07:47:35,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:35,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 269 [2023-11-19 07:47:35,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:36,076 INFO L124 PetriNetUnfolderBase]: 2225/3423 cut-off events. [2023-11-19 07:47:36,076 INFO L125 PetriNetUnfolderBase]: For 6428/6428 co-relation queries the response was YES. [2023-11-19 07:47:36,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10016 conditions, 3423 events. 2225/3423 cut-off events. For 6428/6428 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 18373 event pairs, 1509 based on Foata normal form. 493/3902 useless extension candidates. Maximal degree in co-relation 10004. Up to 3240 conditions per place. [2023-11-19 07:47:36,102 INFO L140 encePairwiseOnDemand]: 264/269 looper letters, 50 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-11-19 07:47:36,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 352 flow [2023-11-19 07:47:36,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:36,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:47:36,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 416 transitions. [2023-11-19 07:47:36,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5154894671623296 [2023-11-19 07:47:36,106 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 416 transitions. [2023-11-19 07:47:36,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 416 transitions. [2023-11-19 07:47:36,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:36,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 416 transitions. [2023-11-19 07:47:36,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 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) [2023-11-19 07:47:36,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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) [2023-11-19 07:47:36,112 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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) [2023-11-19 07:47:36,112 INFO L175 Difference]: Start difference. First operand has 59 places, 72 transitions, 366 flow. Second operand 3 states and 416 transitions. [2023-11-19 07:47:36,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 352 flow [2023-11-19 07:47:36,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 56 transitions, 318 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-11-19 07:47:36,122 INFO L231 Difference]: Finished difference. Result has 54 places, 56 transitions, 218 flow [2023-11-19 07:47:36,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=54, PETRI_TRANSITIONS=56} [2023-11-19 07:47:36,123 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -7 predicate places. [2023-11-19 07:47:36,124 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 56 transitions, 218 flow [2023-11-19 07:47:36,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 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) [2023-11-19 07:47:36,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:36,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:36,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:47:36,125 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:47:36,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:36,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1905366135, now seen corresponding path program 1 times [2023-11-19 07:47:36,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:36,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141064614] [2023-11-19 07:47:36,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:36,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:36,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:36,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:36,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141064614] [2023-11-19 07:47:36,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141064614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:36,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:36,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:47:36,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093578731] [2023-11-19 07:47:36,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:36,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:47:36,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:36,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:47:36,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:47:36,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 269 [2023-11-19 07:47:36,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 56 transitions, 218 flow. Second operand has 6 states, 6 states have (on average 128.5) internal successors, (771), 6 states have internal predecessors, (771), 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) [2023-11-19 07:47:36,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:36,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 269 [2023-11-19 07:47:36,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:36,790 INFO L124 PetriNetUnfolderBase]: 1981/2974 cut-off events. [2023-11-19 07:47:36,791 INFO L125 PetriNetUnfolderBase]: For 1891/1891 co-relation queries the response was YES. [2023-11-19 07:47:36,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7978 conditions, 2974 events. 1981/2974 cut-off events. For 1891/1891 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 13960 event pairs, 172 based on Foata normal form. 126/3088 useless extension candidates. Maximal degree in co-relation 7967. Up to 1134 conditions per place. [2023-11-19 07:47:36,813 INFO L140 encePairwiseOnDemand]: 256/269 looper letters, 98 selfloop transitions, 17 changer transitions 4/124 dead transitions. [2023-11-19 07:47:36,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 124 transitions, 660 flow [2023-11-19 07:47:36,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:47:36,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:47:36,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 859 transitions. [2023-11-19 07:47:36,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5322180916976456 [2023-11-19 07:47:36,818 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 859 transitions. [2023-11-19 07:47:36,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 859 transitions. [2023-11-19 07:47:36,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:36,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 859 transitions. [2023-11-19 07:47:36,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 143.16666666666666) internal successors, (859), 6 states have internal predecessors, (859), 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) [2023-11-19 07:47:36,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 269.0) internal successors, (1883), 7 states have internal predecessors, (1883), 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) [2023-11-19 07:47:36,829 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 269.0) internal successors, (1883), 7 states have internal predecessors, (1883), 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) [2023-11-19 07:47:36,829 INFO L175 Difference]: Start difference. First operand has 54 places, 56 transitions, 218 flow. Second operand 6 states and 859 transitions. [2023-11-19 07:47:36,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 124 transitions, 660 flow [2023-11-19 07:47:36,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 124 transitions, 659 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:47:36,837 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 267 flow [2023-11-19 07:47:36,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=267, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2023-11-19 07:47:36,838 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -2 predicate places. [2023-11-19 07:47:36,839 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 267 flow [2023-11-19 07:47:36,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.5) internal successors, (771), 6 states have internal predecessors, (771), 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) [2023-11-19 07:47:36,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:36,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:36,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:47:36,840 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:47:36,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:36,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1695208802, now seen corresponding path program 1 times [2023-11-19 07:47:36,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:36,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715615318] [2023-11-19 07:47:36,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:36,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:36,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:37,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:37,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:37,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715615318] [2023-11-19 07:47:37,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715615318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:37,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:37,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:47:37,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393307148] [2023-11-19 07:47:37,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:37,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:47:37,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:37,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:47:37,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:47:37,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 269 [2023-11-19 07:47:37,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 267 flow. Second operand has 7 states, 7 states have (on average 128.85714285714286) internal successors, (902), 7 states have internal predecessors, (902), 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) [2023-11-19 07:47:37,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:37,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 269 [2023-11-19 07:47:37,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:37,533 INFO L124 PetriNetUnfolderBase]: 1946/2911 cut-off events. [2023-11-19 07:47:37,533 INFO L125 PetriNetUnfolderBase]: For 3182/3182 co-relation queries the response was YES. [2023-11-19 07:47:37,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8640 conditions, 2911 events. 1946/2911 cut-off events. For 3182/3182 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 13679 event pairs, 168 based on Foata normal form. 20/2919 useless extension candidates. Maximal degree in co-relation 8627. Up to 1134 conditions per place. [2023-11-19 07:47:37,541 INFO L140 encePairwiseOnDemand]: 256/269 looper letters, 0 selfloop transitions, 0 changer transitions 116/116 dead transitions. [2023-11-19 07:47:37,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 116 transitions, 637 flow [2023-11-19 07:47:37,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:47:37,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:47:37,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 977 transitions. [2023-11-19 07:47:37,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5188528943175783 [2023-11-19 07:47:37,547 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 977 transitions. [2023-11-19 07:47:37,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 977 transitions. [2023-11-19 07:47:37,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:37,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 977 transitions. [2023-11-19 07:47:37,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 139.57142857142858) internal successors, (977), 7 states have internal predecessors, (977), 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) [2023-11-19 07:47:37,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 269.0) internal successors, (2152), 8 states have internal predecessors, (2152), 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) [2023-11-19 07:47:37,559 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 269.0) internal successors, (2152), 8 states have internal predecessors, (2152), 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) [2023-11-19 07:47:37,559 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 267 flow. Second operand 7 states and 977 transitions. [2023-11-19 07:47:37,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 116 transitions, 637 flow [2023-11-19 07:47:37,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 116 transitions, 569 flow, removed 8 selfloop flow, removed 8 redundant places. [2023-11-19 07:47:37,604 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2023-11-19 07:47:37,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2023-11-19 07:47:37,605 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -8 predicate places. [2023-11-19 07:47:37,605 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2023-11-19 07:47:37,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 128.85714285714286) internal successors, (902), 7 states have internal predecessors, (902), 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) [2023-11-19 07:47:37,608 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 36 remaining) [2023-11-19 07:47:37,609 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 36 remaining) [2023-11-19 07:47:37,609 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 36 remaining) [2023-11-19 07:47:37,610 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 36 remaining) [2023-11-19 07:47:37,610 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 36 remaining) [2023-11-19 07:47:37,610 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 36 remaining) [2023-11-19 07:47:37,610 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 36 remaining) [2023-11-19 07:47:37,610 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 36 remaining) [2023-11-19 07:47:37,611 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 36 remaining) [2023-11-19 07:47:37,611 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 36 remaining) [2023-11-19 07:47:37,611 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 36 remaining) [2023-11-19 07:47:37,611 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 36 remaining) [2023-11-19 07:47:37,611 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 36 remaining) [2023-11-19 07:47:37,611 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 36 remaining) [2023-11-19 07:47:37,612 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 36 remaining) [2023-11-19 07:47:37,612 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 36 remaining) [2023-11-19 07:47:37,612 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 36 remaining) [2023-11-19 07:47:37,612 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 36 remaining) [2023-11-19 07:47:37,612 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 36 remaining) [2023-11-19 07:47:37,612 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 36 remaining) [2023-11-19 07:47:37,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 36 remaining) [2023-11-19 07:47:37,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 36 remaining) [2023-11-19 07:47:37,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 36 remaining) [2023-11-19 07:47:37,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 36 remaining) [2023-11-19 07:47:37,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 36 remaining) [2023-11-19 07:47:37,614 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 36 remaining) [2023-11-19 07:47:37,614 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 36 remaining) [2023-11-19 07:47:37,614 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 36 remaining) [2023-11-19 07:47:37,614 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 36 remaining) [2023-11-19 07:47:37,614 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 36 remaining) [2023-11-19 07:47:37,614 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 36 remaining) [2023-11-19 07:47:37,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 36 remaining) [2023-11-19 07:47:37,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 36 remaining) [2023-11-19 07:47:37,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 36 remaining) [2023-11-19 07:47:37,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 36 remaining) [2023-11-19 07:47:37,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 36 remaining) [2023-11-19 07:47:37,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:47:37,616 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:37,622 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:47:37,622 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:47:37,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:47:37 BasicIcfg [2023-11-19 07:47:37,627 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:47:37,627 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:47:37,627 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:47:37,628 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:47:37,628 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:12" (3/4) ... [2023-11-19 07:47:37,630 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:47:37,634 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-19 07:47:37,634 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-19 07:47:37,634 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-19 07:47:37,634 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2023-11-19 07:47:37,640 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-11-19 07:47:37,641 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 07:47:37,641 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:47:37,641 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:47:37,742 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3f159c-4902-4455-b7fc-52b8ca4499b4/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:47:37,743 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3f159c-4902-4455-b7fc-52b8ca4499b4/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:47:37,743 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:47:37,744 INFO L158 Benchmark]: Toolchain (without parser) took 26632.27ms. Allocated memory was 132.1MB in the beginning and 6.7GB in the end (delta: 6.6GB). Free memory was 86.7MB in the beginning and 4.4GB in the end (delta: -4.3GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. [2023-11-19 07:47:37,744 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 132.1MB. Free memory is still 103.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:47:37,744 INFO L158 Benchmark]: CACSL2BoogieTranslator took 332.80ms. Allocated memory is still 132.1MB. Free memory was 86.7MB in the beginning and 74.6MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:47:37,745 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.23ms. Allocated memory is still 132.1MB. Free memory was 74.6MB in the beginning and 72.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:47:37,745 INFO L158 Benchmark]: Boogie Preprocessor took 46.91ms. Allocated memory is still 132.1MB. Free memory was 72.6MB in the beginning and 70.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:47:37,746 INFO L158 Benchmark]: RCFGBuilder took 799.62ms. Allocated memory was 132.1MB in the beginning and 167.8MB in the end (delta: 35.7MB). Free memory was 70.9MB in the beginning and 130.2MB in the end (delta: -59.3MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. [2023-11-19 07:47:37,746 INFO L158 Benchmark]: TraceAbstraction took 25266.23ms. Allocated memory was 167.8MB in the beginning and 6.7GB in the end (delta: 6.6GB). Free memory was 129.0MB in the beginning and 4.4GB in the end (delta: -4.3GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. [2023-11-19 07:47:37,746 INFO L158 Benchmark]: Witness Printer took 115.59ms. Allocated memory is still 6.7GB. Free memory was 4.4GB in the beginning and 4.4GB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 07:47:37,749 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 132.1MB. Free memory is still 103.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 332.80ms. Allocated memory is still 132.1MB. Free memory was 86.7MB in the beginning and 74.6MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.23ms. Allocated memory is still 132.1MB. Free memory was 74.6MB in the beginning and 72.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.91ms. Allocated memory is still 132.1MB. Free memory was 72.6MB in the beginning and 70.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 799.62ms. Allocated memory was 132.1MB in the beginning and 167.8MB in the end (delta: 35.7MB). Free memory was 70.9MB in the beginning and 130.2MB in the end (delta: -59.3MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. * TraceAbstraction took 25266.23ms. Allocated memory was 167.8MB in the beginning and 6.7GB in the end (delta: 6.6GB). Free memory was 129.0MB in the beginning and 4.4GB in the end (delta: -4.3GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. * Witness Printer took 115.59ms. Allocated memory is still 6.7GB. Free memory was 4.4GB in the beginning and 4.4GB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.2s, 150 PlacesBefore, 61 PlacesAfterwards, 138 TransitionsBefore, 48 TransitionsAfterwards, 3012 CoEnabledTransitionPairs, 7 FixpointIterations, 60 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 101 TotalNumberOfCompositions, 15369 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6549, independent: 6190, independent conditional: 0, independent unconditional: 6190, dependent: 359, dependent conditional: 0, dependent unconditional: 359, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1403, independent: 1347, independent conditional: 0, independent unconditional: 1347, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6549, independent: 4843, independent conditional: 0, independent unconditional: 4843, dependent: 303, dependent conditional: 0, dependent unconditional: 303, unknown: 1403, unknown conditional: 0, unknown unconditional: 1403] , Statistics on independence cache: Total cache size (in pairs): 439, Positive cache size: 416, Positive conditional cache size: 0, Positive unconditional cache size: 416, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 76]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 76]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 220 locations, 36 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: 25.1s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 17.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 582 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 544 mSDsluCounter, 36 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 124 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1049 IncrementalHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 124 mSolverCounterUnsat, 15 mSDtfsCounter, 1049 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=366occurred in iteration=7, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 103 ConstructedInterpolants, 0 QuantifiedInterpolants, 343 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 07:47:37,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db3f159c-4902-4455-b7fc-52b8ca4499b4/bin/uautomizer-verify-uCwYo4JHxu/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