./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/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_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/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_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/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 7be9b237ca4111a24c77c67cce26f31a788af03984af96dee7353f79c789c2c1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:06:59,328 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:06:59,404 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 08:06:59,411 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:06:59,411 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:06:59,455 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:06:59,458 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:06:59,459 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:06:59,461 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:06:59,466 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:06:59,466 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:06:59,467 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:06:59,467 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:06:59,469 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:06:59,470 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:06:59,470 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:06:59,470 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:06:59,471 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:06:59,471 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:06:59,472 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:06:59,472 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:06:59,474 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:06:59,475 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 08:06:59,475 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:06:59,475 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:06:59,476 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:06:59,476 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:06:59,477 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:06:59,478 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:06:59,478 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:06:59,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:06:59,480 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:06:59,480 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:06:59,480 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:06:59,480 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:06:59,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:06:59,481 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:06:59,481 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:06:59,481 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:06:59,482 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:06:59,482 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:06:59,482 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_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7be9b237ca4111a24c77c67cce26f31a788af03984af96dee7353f79c789c2c1 [2023-11-19 08:06:59,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:06:59,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:06:59,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:06:59,777 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:06:59,778 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:06:59,779 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2023-11-19 08:07:02,931 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:07:03,228 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:07:03,229 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2023-11-19 08:07:03,263 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/bin/uautomizer-verify-uCwYo4JHxu/data/5b61c201f/fc5500e7f7904d73b451f1fa68b577f5/FLAG2b30125ed [2023-11-19 08:07:03,282 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/bin/uautomizer-verify-uCwYo4JHxu/data/5b61c201f/fc5500e7f7904d73b451f1fa68b577f5 [2023-11-19 08:07:03,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:07:03,291 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:07:03,295 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:07:03,296 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:07:03,301 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:07:03,304 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:07:03" (1/1) ... [2023-11-19 08:07:03,306 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b4ea510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:03, skipping insertion in model container [2023-11-19 08:07:03,307 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:07:03" (1/1) ... [2023-11-19 08:07:03,390 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:07:04,023 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:07:04,115 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:07:04,172 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:07:04,243 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:07:04,244 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:04 WrapperNode [2023-11-19 08:07:04,244 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:07:04,245 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:07:04,246 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:07:04,246 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:07:04,254 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:04" (1/1) ... [2023-11-19 08:07:04,276 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:04" (1/1) ... [2023-11-19 08:07:04,311 INFO L138 Inliner]: procedures = 278, calls = 63, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 257 [2023-11-19 08:07:04,311 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:07:04,312 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:07:04,312 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:07:04,313 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:07:04,325 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:04" (1/1) ... [2023-11-19 08:07:04,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:04" (1/1) ... [2023-11-19 08:07:04,361 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:04" (1/1) ... [2023-11-19 08:07:04,368 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:04" (1/1) ... [2023-11-19 08:07:04,381 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:04" (1/1) ... [2023-11-19 08:07:04,400 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:04" (1/1) ... [2023-11-19 08:07:04,404 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:04" (1/1) ... [2023-11-19 08:07:04,406 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:04" (1/1) ... [2023-11-19 08:07:04,418 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:07:04,421 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:07:04,422 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:07:04,422 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:07:04,424 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:04" (1/1) ... [2023-11-19 08:07:04,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:07:04,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:04,461 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:07:04,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:07:04,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:07:04,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 08:07:04,526 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-19 08:07:04,527 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-19 08:07:04,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:07:04,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:07:04,527 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-19 08:07:04,528 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-19 08:07:04,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:07:04,529 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 08:07:04,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 08:07:04,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:07:04,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 08:07:04,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:07:04,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:07:04,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:07:04,533 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 08:07:04,779 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:07:04,781 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:07:05,308 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:07:05,336 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:07:05,336 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-19 08:07:05,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:07:05 BoogieIcfgContainer [2023-11-19 08:07:05,342 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:07:05,345 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:07:05,346 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:07:05,349 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:07:05,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:07:03" (1/3) ... [2023-11-19 08:07:05,350 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70cd6357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:07:05, skipping insertion in model container [2023-11-19 08:07:05,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:04" (2/3) ... [2023-11-19 08:07:05,351 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70cd6357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:07:05, skipping insertion in model container [2023-11-19 08:07:05,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:07:05" (3/3) ... [2023-11-19 08:07:05,352 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2023-11-19 08:07:05,361 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:07:05,373 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:07:05,374 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-19 08:07:05,374 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:07:05,554 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 08:07:05,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 268 places, 291 transitions, 602 flow [2023-11-19 08:07:05,794 INFO L124 PetriNetUnfolderBase]: 59/546 cut-off events. [2023-11-19 08:07:05,794 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-19 08:07:05,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 563 conditions, 546 events. 59/546 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2287 event pairs, 0 based on Foata normal form. 0/451 useless extension candidates. Maximal degree in co-relation 268. Up to 8 conditions per place. [2023-11-19 08:07:05,808 INFO L82 GeneralOperation]: Start removeDead. Operand has 268 places, 291 transitions, 602 flow [2023-11-19 08:07:05,819 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 268 places, 291 transitions, 602 flow [2023-11-19 08:07:05,823 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:07:05,833 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 268 places, 291 transitions, 602 flow [2023-11-19 08:07:05,837 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 268 places, 291 transitions, 602 flow [2023-11-19 08:07:05,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 268 places, 291 transitions, 602 flow [2023-11-19 08:07:06,014 INFO L124 PetriNetUnfolderBase]: 59/546 cut-off events. [2023-11-19 08:07:06,016 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-19 08:07:06,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 563 conditions, 546 events. 59/546 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2287 event pairs, 0 based on Foata normal form. 0/451 useless extension candidates. Maximal degree in co-relation 268. Up to 8 conditions per place. [2023-11-19 08:07:06,051 INFO L119 LiptonReduction]: Number of co-enabled transitions 28806 [2023-11-19 08:07:16,770 INFO L134 LiptonReduction]: Checked pairs total: 40981 [2023-11-19 08:07:16,770 INFO L136 LiptonReduction]: Total number of compositions: 272 [2023-11-19 08:07:16,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:07:16,792 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;@757fe91f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:07:16,792 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-19 08:07:16,795 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:07:16,795 INFO L124 PetriNetUnfolderBase]: 1/3 cut-off events. [2023-11-19 08:07:16,796 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:07:16,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:16,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 08:07:16,797 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 08:07:16,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:16,801 INFO L85 PathProgramCache]: Analyzing trace with hash 37179, now seen corresponding path program 1 times [2023-11-19 08:07:16,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:16,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6527161] [2023-11-19 08:07:16,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:16,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:17,150 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 08:07:17,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:17,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6527161] [2023-11-19 08:07:17,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6527161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:17,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:17,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:07:17,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977986573] [2023-11-19 08:07:17,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:17,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:07:17,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:17,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:07:17,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:07:17,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 563 [2023-11-19 08:07:17,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 83 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 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 08:07:17,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:17,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 563 [2023-11-19 08:07:17,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:18,569 INFO L124 PetriNetUnfolderBase]: 4605/7820 cut-off events. [2023-11-19 08:07:18,569 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2023-11-19 08:07:18,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15141 conditions, 7820 events. 4605/7820 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 48010 event pairs, 4306 based on Foata normal form. 464/6276 useless extension candidates. Maximal degree in co-relation 13402. Up to 7228 conditions per place. [2023-11-19 08:07:18,630 INFO L140 encePairwiseOnDemand]: 547/563 looper letters, 58 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-11-19 08:07:18,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 69 transitions, 278 flow [2023-11-19 08:07:18,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:07:18,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:07:18,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 848 transitions. [2023-11-19 08:07:18,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020722320899941 [2023-11-19 08:07:18,651 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 848 transitions. [2023-11-19 08:07:18,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 848 transitions. [2023-11-19 08:07:18,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:18,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 848 transitions. [2023-11-19 08:07:18,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 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 08:07:18,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 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 08:07:18,675 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 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 08:07:18,677 INFO L175 Difference]: Start difference. First operand has 69 places, 83 transitions, 186 flow. Second operand 3 states and 848 transitions. [2023-11-19 08:07:18,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 69 transitions, 278 flow [2023-11-19 08:07:18,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 69 transitions, 278 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:07:18,688 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 162 flow [2023-11-19 08:07:18,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2023-11-19 08:07:18,694 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 0 predicate places. [2023-11-19 08:07:18,695 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 162 flow [2023-11-19 08:07:18,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 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 08:07:18,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:18,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:07:18,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:07:18,697 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 08:07:18,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:18,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1106798761, now seen corresponding path program 1 times [2023-11-19 08:07:18,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:18,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205847738] [2023-11-19 08:07:18,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:18,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:18,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:18,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:18,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205847738] [2023-11-19 08:07:18,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205847738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:18,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:18,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:07:18,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177059924] [2023-11-19 08:07:18,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:18,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:07:18,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:18,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:07:18,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:07:18,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 563 [2023-11-19 08:07:18,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 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 08:07:18,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:18,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 563 [2023-11-19 08:07:18,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:19,972 INFO L124 PetriNetUnfolderBase]: 4605/7821 cut-off events. [2023-11-19 08:07:19,973 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2023-11-19 08:07:19,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15146 conditions, 7821 events. 4605/7821 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 48024 event pairs, 4306 based on Foata normal form. 1/5815 useless extension candidates. Maximal degree in co-relation 15131. Up to 7230 conditions per place. [2023-11-19 08:07:20,030 INFO L140 encePairwiseOnDemand]: 560/563 looper letters, 59 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-11-19 08:07:20,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 286 flow [2023-11-19 08:07:20,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:07:20,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:07:20,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 836 transitions. [2023-11-19 08:07:20,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49496743635287155 [2023-11-19 08:07:20,035 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 836 transitions. [2023-11-19 08:07:20,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 836 transitions. [2023-11-19 08:07:20,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:20,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 836 transitions. [2023-11-19 08:07:20,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 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 08:07:20,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 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 08:07:20,045 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 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 08:07:20,046 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 162 flow. Second operand 3 states and 836 transitions. [2023-11-19 08:07:20,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 286 flow [2023-11-19 08:07:20,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 70 transitions, 282 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:07:20,052 INFO L231 Difference]: Finished difference. Result has 70 places, 70 transitions, 170 flow [2023-11-19 08:07:20,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=70, PETRI_TRANSITIONS=70} [2023-11-19 08:07:20,053 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 1 predicate places. [2023-11-19 08:07:20,053 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 70 transitions, 170 flow [2023-11-19 08:07:20,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 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 08:07:20,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:20,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 08:07:20,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:07:20,055 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 08:07:20,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:20,056 INFO L85 PathProgramCache]: Analyzing trace with hash 9516250, now seen corresponding path program 1 times [2023-11-19 08:07:20,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:20,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648701899] [2023-11-19 08:07:20,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:20,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:20,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:20,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:20,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648701899] [2023-11-19 08:07:20,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648701899] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:20,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358512446] [2023-11-19 08:07:20,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:20,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:20,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:20,149 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:20,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:07:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:20,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:07:20,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:20,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:20,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:07:20,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:07:20,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358512446] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:07:20,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:07:20,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-19 08:07:20,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629995766] [2023-11-19 08:07:20,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:07:20,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:07:20,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:20,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:07:20,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:07:20,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 563 [2023-11-19 08:07:20,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 170 flow. Second operand has 6 states, 6 states have (on average 258.5) internal successors, (1551), 6 states have internal predecessors, (1551), 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 08:07:20,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:20,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 563 [2023-11-19 08:07:20,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:21,663 INFO L124 PetriNetUnfolderBase]: 4605/7824 cut-off events. [2023-11-19 08:07:21,663 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2023-11-19 08:07:21,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15159 conditions, 7824 events. 4605/7824 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 48035 event pairs, 4306 based on Foata normal form. 0/5816 useless extension candidates. Maximal degree in co-relation 15146. Up to 7230 conditions per place. [2023-11-19 08:07:21,714 INFO L140 encePairwiseOnDemand]: 560/563 looper letters, 59 selfloop transitions, 5 changer transitions 0/73 dead transitions. [2023-11-19 08:07:21,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 73 transitions, 310 flow [2023-11-19 08:07:21,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:07:21,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:07:21,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1609 transitions. [2023-11-19 08:07:21,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4763173475429248 [2023-11-19 08:07:21,722 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1609 transitions. [2023-11-19 08:07:21,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1609 transitions. [2023-11-19 08:07:21,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:21,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1609 transitions. [2023-11-19 08:07:21,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 268.1666666666667) internal successors, (1609), 6 states have internal predecessors, (1609), 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 08:07:21,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 563.0) internal successors, (3941), 7 states have internal predecessors, (3941), 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 08:07:21,742 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 563.0) internal successors, (3941), 7 states have internal predecessors, (3941), 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 08:07:21,742 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 170 flow. Second operand 6 states and 1609 transitions. [2023-11-19 08:07:21,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 73 transitions, 310 flow [2023-11-19 08:07:21,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 73 transitions, 306 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 08:07:21,747 INFO L231 Difference]: Finished difference. Result has 77 places, 73 transitions, 202 flow [2023-11-19 08:07:21,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=202, PETRI_PLACES=77, PETRI_TRANSITIONS=73} [2023-11-19 08:07:21,749 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 8 predicate places. [2023-11-19 08:07:21,749 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 73 transitions, 202 flow [2023-11-19 08:07:21,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 258.5) internal successors, (1551), 6 states have internal predecessors, (1551), 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 08:07:21,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:21,751 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-11-19 08:07:21,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 08:07:21,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:21,973 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 08:07:21,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:21,973 INFO L85 PathProgramCache]: Analyzing trace with hash -2015204119, now seen corresponding path program 2 times [2023-11-19 08:07:21,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:21,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802115152] [2023-11-19 08:07:21,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:21,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:22,204 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 08:07:22,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:22,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802115152] [2023-11-19 08:07:22,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802115152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:22,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:22,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:07:22,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923198656] [2023-11-19 08:07:22,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:22,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:07:22,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:22,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:07:22,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:07:22,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 563 [2023-11-19 08:07:22,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 73 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 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 08:07:22,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:22,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 563 [2023-11-19 08:07:22,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:23,483 INFO L124 PetriNetUnfolderBase]: 4472/7464 cut-off events. [2023-11-19 08:07:23,483 INFO L125 PetriNetUnfolderBase]: For 150/150 co-relation queries the response was YES. [2023-11-19 08:07:23,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14552 conditions, 7464 events. 4472/7464 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 45243 event pairs, 2142 based on Foata normal form. 0/5593 useless extension candidates. Maximal degree in co-relation 14517. Up to 6965 conditions per place. [2023-11-19 08:07:23,537 INFO L140 encePairwiseOnDemand]: 558/563 looper letters, 69 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2023-11-19 08:07:23,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 80 transitions, 358 flow [2023-11-19 08:07:23,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:07:23,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:07:23,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 844 transitions. [2023-11-19 08:07:23,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4997039668442866 [2023-11-19 08:07:23,542 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 844 transitions. [2023-11-19 08:07:23,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 844 transitions. [2023-11-19 08:07:23,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:23,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 844 transitions. [2023-11-19 08:07:23,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 281.3333333333333) internal successors, (844), 3 states have internal predecessors, (844), 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 08:07:23,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 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 08:07:23,554 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 563.0) internal successors, (2252), 4 states have internal predecessors, (2252), 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 08:07:23,554 INFO L175 Difference]: Start difference. First operand has 77 places, 73 transitions, 202 flow. Second operand 3 states and 844 transitions. [2023-11-19 08:07:23,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 80 transitions, 358 flow [2023-11-19 08:07:23,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 80 transitions, 344 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-19 08:07:23,559 INFO L231 Difference]: Finished difference. Result has 77 places, 71 transitions, 192 flow [2023-11-19 08:07:23,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=77, PETRI_TRANSITIONS=71} [2023-11-19 08:07:23,560 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 8 predicate places. [2023-11-19 08:07:23,560 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 192 flow [2023-11-19 08:07:23,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 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 08:07:23,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:23,562 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-11-19 08:07:23,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:07:23,562 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 08:07:23,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:23,563 INFO L85 PathProgramCache]: Analyzing trace with hash 419161407, now seen corresponding path program 1 times [2023-11-19 08:07:23,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:23,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155671913] [2023-11-19 08:07:23,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:23,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:23,732 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:07:23,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:23,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155671913] [2023-11-19 08:07:23,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155671913] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:23,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55268719] [2023-11-19 08:07:23,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:23,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:23,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:23,735 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:23,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:07:23,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:23,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:07:23,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:23,943 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:07:23,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:07:24,004 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:07:24,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55268719] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:07:24,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:07:24,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-19 08:07:24,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870926697] [2023-11-19 08:07:24,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:07:24,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 08:07:24,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:24,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 08:07:24,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:07:24,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 563 [2023-11-19 08:07:24,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 192 flow. Second operand has 12 states, 12 states have (on average 258.25) internal successors, (3099), 12 states have internal predecessors, (3099), 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 08:07:24,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:24,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 563 [2023-11-19 08:07:24,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:25,130 INFO L124 PetriNetUnfolderBase]: 4472/7512 cut-off events. [2023-11-19 08:07:25,130 INFO L125 PetriNetUnfolderBase]: For 236/236 co-relation queries the response was YES. [2023-11-19 08:07:25,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14641 conditions, 7512 events. 4472/7512 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 45496 event pairs, 4206 based on Foata normal form. 6/5645 useless extension candidates. Maximal degree in co-relation 14587. Up to 6972 conditions per place. [2023-11-19 08:07:25,190 INFO L140 encePairwiseOnDemand]: 560/563 looper letters, 57 selfloop transitions, 11 changer transitions 0/77 dead transitions. [2023-11-19 08:07:25,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 77 transitions, 364 flow [2023-11-19 08:07:25,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 08:07:25,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 08:07:25,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3158 transitions. [2023-11-19 08:07:25,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46743635287152163 [2023-11-19 08:07:25,203 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3158 transitions. [2023-11-19 08:07:25,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3158 transitions. [2023-11-19 08:07:25,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:25,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3158 transitions. [2023-11-19 08:07:25,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 263.1666666666667) internal successors, (3158), 12 states have internal predecessors, (3158), 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 08:07:25,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 563.0) internal successors, (7319), 13 states have internal predecessors, (7319), 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 08:07:25,236 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 563.0) internal successors, (7319), 13 states have internal predecessors, (7319), 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 08:07:25,237 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 192 flow. Second operand 12 states and 3158 transitions. [2023-11-19 08:07:25,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 77 transitions, 364 flow [2023-11-19 08:07:25,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 77 transitions, 360 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:07:25,242 INFO L231 Difference]: Finished difference. Result has 92 places, 77 transitions, 272 flow [2023-11-19 08:07:25,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=272, PETRI_PLACES=92, PETRI_TRANSITIONS=77} [2023-11-19 08:07:25,245 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 23 predicate places. [2023-11-19 08:07:25,246 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 77 transitions, 272 flow [2023-11-19 08:07:25,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 258.25) internal successors, (3099), 12 states have internal predecessors, (3099), 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 08:07:25,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:25,248 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-11-19 08:07:25,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:25,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:25,469 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 08:07:25,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:25,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1944197023, now seen corresponding path program 2 times [2023-11-19 08:07:25,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:25,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815008924] [2023-11-19 08:07:25,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:25,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:25,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:26,011 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:07:26,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:26,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815008924] [2023-11-19 08:07:26,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815008924] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:26,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007083529] [2023-11-19 08:07:26,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:07:26,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:26,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:26,014 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:26,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:07:26,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 08:07:26,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:07:26,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 08:07:26,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:26,346 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:07:26,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:07:26,621 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:07:26,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007083529] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:07:26,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:07:26,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2023-11-19 08:07:26,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834892214] [2023-11-19 08:07:26,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:07:26,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-19 08:07:26,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:26,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-19 08:07:26,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-19 08:07:26,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 563 [2023-11-19 08:07:26,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 77 transitions, 272 flow. Second operand has 24 states, 24 states have (on average 258.125) internal successors, (6195), 24 states have internal predecessors, (6195), 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 08:07:26,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:07:26,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 563 [2023-11-19 08:07:26,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:07:28,219 INFO L124 PetriNetUnfolderBase]: 4472/7515 cut-off events. [2023-11-19 08:07:28,219 INFO L125 PetriNetUnfolderBase]: For 733/733 co-relation queries the response was YES. [2023-11-19 08:07:28,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14712 conditions, 7515 events. 4472/7515 cut-off events. For 733/733 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 45413 event pairs, 4206 based on Foata normal form. 12/5654 useless extension candidates. Maximal degree in co-relation 14574. Up to 6972 conditions per place. [2023-11-19 08:07:28,285 INFO L140 encePairwiseOnDemand]: 560/563 looper letters, 57 selfloop transitions, 23 changer transitions 0/89 dead transitions. [2023-11-19 08:07:28,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 89 transitions, 528 flow [2023-11-19 08:07:28,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-19 08:07:28,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-19 08:07:28,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6260 transitions. [2023-11-19 08:07:28,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4632918886915334 [2023-11-19 08:07:28,313 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6260 transitions. [2023-11-19 08:07:28,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6260 transitions. [2023-11-19 08:07:28,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:07:28,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6260 transitions. [2023-11-19 08:07:28,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 260.8333333333333) internal successors, (6260), 24 states have internal predecessors, (6260), 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 08:07:28,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 563.0) internal successors, (14075), 25 states have internal predecessors, (14075), 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 08:07:28,378 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 563.0) internal successors, (14075), 25 states have internal predecessors, (14075), 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 08:07:28,378 INFO L175 Difference]: Start difference. First operand has 92 places, 77 transitions, 272 flow. Second operand 24 states and 6260 transitions. [2023-11-19 08:07:28,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 89 transitions, 528 flow [2023-11-19 08:07:28,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 89 transitions, 456 flow, removed 31 selfloop flow, removed 5 redundant places. [2023-11-19 08:07:28,387 INFO L231 Difference]: Finished difference. Result has 122 places, 89 transitions, 392 flow [2023-11-19 08:07:28,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=563, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=392, PETRI_PLACES=122, PETRI_TRANSITIONS=89} [2023-11-19 08:07:28,391 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 53 predicate places. [2023-11-19 08:07:28,392 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 89 transitions, 392 flow [2023-11-19 08:07:28,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 258.125) internal successors, (6195), 24 states have internal predecessors, (6195), 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 08:07:28,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:07:28,403 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 2, 1, 1, 1, 1, 1] [2023-11-19 08:07:28,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:28,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:28,625 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-19 08:07:28,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:28,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1837194145, now seen corresponding path program 3 times [2023-11-19 08:07:28,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:28,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291560407] [2023-11-19 08:07:28,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:28,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:28,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:30,298 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:07:30,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:30,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291560407] [2023-11-19 08:07:30,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291560407] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:30,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380594109] [2023-11-19 08:07:30,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 08:07:30,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:30,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:30,302 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:30,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4b25b44-560f-4f42-bbf6-b2df8304d3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process