./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_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_70d2592f-a0bb-4f70-92b4-1b3ea1eb2767/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d2592f-a0bb-4f70-92b4-1b3ea1eb2767/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_70d2592f-a0bb-4f70-92b4-1b3ea1eb2767/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d2592f-a0bb-4f70-92b4-1b3ea1eb2767/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d2592f-a0bb-4f70-92b4-1b3ea1eb2767/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_70d2592f-a0bb-4f70-92b4-1b3ea1eb2767/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 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:00:15,220 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:00:15,332 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d2592f-a0bb-4f70-92b4-1b3ea1eb2767/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 08:00:15,339 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:00:15,340 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:00:15,369 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:00:15,370 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:00:15,370 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:00:15,371 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:00:15,372 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:00:15,373 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:00:15,374 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:00:15,374 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:00:15,375 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:00:15,376 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:00:15,377 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:00:15,377 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:00:15,378 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:00:15,378 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:00:15,379 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:00:15,379 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:00:15,381 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:00:15,381 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 08:00:15,382 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:00:15,382 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:00:15,383 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:00:15,383 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:00:15,384 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:00:15,385 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:00:15,385 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:00:15,386 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:15,387 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:00:15,388 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:00:15,388 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:00:15,388 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:00:15,389 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:00:15,389 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:00:15,389 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:00:15,390 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:00:15,390 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:00:15,390 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:00:15,391 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_70d2592f-a0bb-4f70-92b4-1b3ea1eb2767/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d2592f-a0bb-4f70-92b4-1b3ea1eb2767/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 [2023-11-19 08:00:15,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:00:15,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:00:15,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:00:15,704 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:00:15,704 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:00:15,706 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d2592f-a0bb-4f70-92b4-1b3ea1eb2767/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i [2023-11-19 08:00:19,437 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:00:19,711 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:00:19,712 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d2592f-a0bb-4f70-92b4-1b3ea1eb2767/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i [2023-11-19 08:00:19,740 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d2592f-a0bb-4f70-92b4-1b3ea1eb2767/bin/uautomizer-verify-uCwYo4JHxu/data/fc6d64d08/864ce24007a9491f9d5ef453357ba6f3/FLAGdd89fbee2 [2023-11-19 08:00:19,760 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d2592f-a0bb-4f70-92b4-1b3ea1eb2767/bin/uautomizer-verify-uCwYo4JHxu/data/fc6d64d08/864ce24007a9491f9d5ef453357ba6f3 [2023-11-19 08:00:19,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:00:19,767 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:00:19,768 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:19,768 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:00:19,778 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:00:19,779 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:19" (1/1) ... [2023-11-19 08:00:19,780 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@174830ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:19, skipping insertion in model container [2023-11-19 08:00:19,780 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:19" (1/1) ... [2023-11-19 08:00:19,849 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:00:20,270 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:20,287 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:00:20,369 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:20,438 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:00:20,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:20 WrapperNode [2023-11-19 08:00:20,439 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:20,441 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:20,441 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:00:20,441 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:00:20,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:20" (1/1) ... [2023-11-19 08:00:20,488 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:20" (1/1) ... [2023-11-19 08:00:20,521 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2023-11-19 08:00:20,522 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:20,522 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:00:20,523 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:00:20,524 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:00:20,533 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:20" (1/1) ... [2023-11-19 08:00:20,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:20" (1/1) ... [2023-11-19 08:00:20,544 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:20" (1/1) ... [2023-11-19 08:00:20,544 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:20" (1/1) ... [2023-11-19 08:00:20,557 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:20" (1/1) ... [2023-11-19 08:00:20,568 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:20" (1/1) ... [2023-11-19 08:00:20,577 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:20" (1/1) ... [2023-11-19 08:00:20,583 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:20" (1/1) ... [2023-11-19 08:00:20,586 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:00:20,592 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:00:20,592 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:00:20,592 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:00:20,593 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:20" (1/1) ... [2023-11-19 08:00:20,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:20,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d2592f-a0bb-4f70-92b4-1b3ea1eb2767/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:20,629 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d2592f-a0bb-4f70-92b4-1b3ea1eb2767/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:20,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d2592f-a0bb-4f70-92b4-1b3ea1eb2767/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:00:20,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:00:20,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:00:20,701 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 08:00:20,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:00:20,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:00:20,702 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 08:00:20,702 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 08:00:20,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:00:20,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:00:20,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:00:20,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:00:20,705 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 08:00:20,874 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:00:20,876 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:00:21,136 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:00:21,149 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:00:21,150 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-11-19 08:00:21,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:21 BoogieIcfgContainer [2023-11-19 08:00:21,156 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:00:21,159 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:00:21,159 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:00:21,163 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:00:21,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:00:19" (1/3) ... [2023-11-19 08:00:21,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a12615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:21, skipping insertion in model container [2023-11-19 08:00:21,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:20" (2/3) ... [2023-11-19 08:00:21,165 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a12615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:21, skipping insertion in model container [2023-11-19 08:00:21,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:21" (3/3) ... [2023-11-19 08:00:21,167 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_22-deref_read_racefree.i [2023-11-19 08:00:21,178 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:00:21,191 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:00:21,192 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 08:00:21,192 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:00:21,262 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:00:21,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 119 transitions, 242 flow [2023-11-19 08:00:21,389 INFO L124 PetriNetUnfolderBase]: 16/158 cut-off events. [2023-11-19 08:00:21,389 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:00:21,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 158 events. 16/158 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 403 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 88. Up to 4 conditions per place. [2023-11-19 08:00:21,397 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 119 transitions, 242 flow [2023-11-19 08:00:21,404 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 119 transitions, 242 flow [2023-11-19 08:00:21,409 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:00:21,421 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 119 transitions, 242 flow [2023-11-19 08:00:21,424 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 119 transitions, 242 flow [2023-11-19 08:00:21,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 119 transitions, 242 flow [2023-11-19 08:00:21,477 INFO L124 PetriNetUnfolderBase]: 16/158 cut-off events. [2023-11-19 08:00:21,478 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:00:21,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 158 events. 16/158 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 403 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 88. Up to 4 conditions per place. [2023-11-19 08:00:21,485 INFO L119 LiptonReduction]: Number of co-enabled transitions 3920 [2023-11-19 08:00:25,851 INFO L134 LiptonReduction]: Checked pairs total: 6835 [2023-11-19 08:00:25,852 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-11-19 08:00:25,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:00:25,876 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;@30b423a7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:00:25,877 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-19 08:00:25,881 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:00:25,881 INFO L124 PetriNetUnfolderBase]: 2/9 cut-off events. [2023-11-19 08:00:25,882 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:00:25,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:25,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 08:00:25,883 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-19 08:00:25,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:25,889 INFO L85 PathProgramCache]: Analyzing trace with hash 14479331, now seen corresponding path program 1 times [2023-11-19 08:00:25,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:25,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047513648] [2023-11-19 08:00:25,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:25,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:26,206 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 08:00:26,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:26,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047513648] [2023-11-19 08:00:26,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047513648] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:26,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:26,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:00:26,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272626781] [2023-11-19 08:00:26,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:26,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:26,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:26,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:26,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:26,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 235 [2023-11-19 08:00:26,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 36 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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 08:00:26,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:26,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 235 [2023-11-19 08:00:26,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:26,455 INFO L124 PetriNetUnfolderBase]: 91/221 cut-off events. [2023-11-19 08:00:26,455 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:00:26,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 221 events. 91/221 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1023 event pairs, 0 based on Foata normal form. 16/191 useless extension candidates. Maximal degree in co-relation 406. Up to 190 conditions per place. [2023-11-19 08:00:26,466 INFO L140 encePairwiseOnDemand]: 221/235 looper letters, 34 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2023-11-19 08:00:26,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 39 transitions, 154 flow [2023-11-19 08:00:26,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:26,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:00:26,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2023-11-19 08:00:26,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502127659574468 [2023-11-19 08:00:26,497 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2023-11-19 08:00:26,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2023-11-19 08:00:26,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:26,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2023-11-19 08:00:26,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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 08:00:26,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 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 08:00:26,523 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 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 08:00:26,525 INFO L175 Difference]: Start difference. First operand has 30 places, 36 transitions, 76 flow. Second operand 3 states and 354 transitions. [2023-11-19 08:00:26,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 39 transitions, 154 flow [2023-11-19 08:00:26,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 39 transitions, 154 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:00:26,544 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 62 flow [2023-11-19 08:00:26,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2023-11-19 08:00:26,551 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2023-11-19 08:00:26,551 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 62 flow [2023-11-19 08:00:26,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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 08:00:26,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:26,552 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 08:00:26,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:00:26,553 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-19 08:00:26,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:26,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1029772697, now seen corresponding path program 1 times [2023-11-19 08:00:26,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:26,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077839465] [2023-11-19 08:00:26,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:26,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:26,590 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:00:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:26,630 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:00:26,630 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:00:26,632 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2023-11-19 08:00:26,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2023-11-19 08:00:26,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2023-11-19 08:00:26,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2023-11-19 08:00:26,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2023-11-19 08:00:26,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2023-11-19 08:00:26,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2023-11-19 08:00:26,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2023-11-19 08:00:26,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2023-11-19 08:00:26,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2023-11-19 08:00:26,638 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2023-11-19 08:00:26,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:00:26,638 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 08:00:26,641 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:00:26,641 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 08:00:26,666 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:00:26,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 160 transitions, 330 flow [2023-11-19 08:00:26,711 INFO L124 PetriNetUnfolderBase]: 27/247 cut-off events. [2023-11-19 08:00:26,712 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:00:26,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 247 events. 27/247 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 781 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 159. Up to 6 conditions per place. [2023-11-19 08:00:26,716 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 160 transitions, 330 flow [2023-11-19 08:00:26,719 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 160 transitions, 330 flow [2023-11-19 08:00:26,719 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:00:26,719 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 160 transitions, 330 flow [2023-11-19 08:00:26,720 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 160 transitions, 330 flow [2023-11-19 08:00:26,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 160 transitions, 330 flow [2023-11-19 08:00:26,755 INFO L124 PetriNetUnfolderBase]: 27/247 cut-off events. [2023-11-19 08:00:26,756 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:00:26,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 247 events. 27/247 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 781 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 159. Up to 6 conditions per place. [2023-11-19 08:00:26,768 INFO L119 LiptonReduction]: Number of co-enabled transitions 11120 [2023-11-19 08:00:31,195 INFO L134 LiptonReduction]: Checked pairs total: 22347 [2023-11-19 08:00:31,195 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-11-19 08:00:31,198 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:00:31,200 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;@30b423a7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:00:31,200 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-19 08:00:31,203 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:00:31,203 INFO L124 PetriNetUnfolderBase]: 3/13 cut-off events. [2023-11-19 08:00:31,203 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:00:31,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:31,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:00:31,204 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-19 08:00:31,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:31,205 INFO L85 PathProgramCache]: Analyzing trace with hash 780055747, now seen corresponding path program 1 times [2023-11-19 08:00:31,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:31,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420289884] [2023-11-19 08:00:31,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:31,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:31,337 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 08:00:31,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:31,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420289884] [2023-11-19 08:00:31,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420289884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:31,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:31,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:00:31,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592147544] [2023-11-19 08:00:31,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:31,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:31,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:31,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:31,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:31,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 307 [2023-11-19 08:00:31,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 59 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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 08:00:31,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:31,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 307 [2023-11-19 08:00:31,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:32,342 INFO L124 PetriNetUnfolderBase]: 3522/5664 cut-off events. [2023-11-19 08:00:32,343 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-11-19 08:00:32,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11287 conditions, 5664 events. 3522/5664 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 36642 event pairs, 3354 based on Foata normal form. 604/4512 useless extension candidates. Maximal degree in co-relation 7388. Up to 5564 conditions per place. [2023-11-19 08:00:32,403 INFO L140 encePairwiseOnDemand]: 287/307 looper letters, 50 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-11-19 08:00:32,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 58 transitions, 230 flow [2023-11-19 08:00:32,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:32,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:00:32,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 478 transitions. [2023-11-19 08:00:32,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190010857763301 [2023-11-19 08:00:32,408 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 478 transitions. [2023-11-19 08:00:32,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 478 transitions. [2023-11-19 08:00:32,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:32,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 478 transitions. [2023-11-19 08:00:32,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 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 08:00:32,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 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 08:00:32,418 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 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 08:00:32,418 INFO L175 Difference]: Start difference. First operand has 49 places, 59 transitions, 128 flow. Second operand 3 states and 478 transitions. [2023-11-19 08:00:32,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 58 transitions, 230 flow [2023-11-19 08:00:32,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 230 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:00:32,423 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 114 flow [2023-11-19 08:00:32,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2023-11-19 08:00:32,424 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 3 predicate places. [2023-11-19 08:00:32,425 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 114 flow [2023-11-19 08:00:32,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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 08:00:32,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:32,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:32,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:00:32,427 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-19 08:00:32,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:32,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1978726006, now seen corresponding path program 1 times [2023-11-19 08:00:32,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:32,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681527280] [2023-11-19 08:00:32,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:32,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:32,732 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 08:00:32,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:32,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681527280] [2023-11-19 08:00:32,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681527280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:32,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:32,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:00:32,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122646192] [2023-11-19 08:00:32,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:32,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:00:32,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:32,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:00:32,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:00:32,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 307 [2023-11-19 08:00:32,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 131.25) internal successors, (525), 4 states have internal predecessors, (525), 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 08:00:32,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:32,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 307 [2023-11-19 08:00:32,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:33,741 INFO L124 PetriNetUnfolderBase]: 3164/5101 cut-off events. [2023-11-19 08:00:33,741 INFO L125 PetriNetUnfolderBase]: For 406/406 co-relation queries the response was YES. [2023-11-19 08:00:33,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10908 conditions, 5101 events. 3164/5101 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 32351 event pairs, 1209 based on Foata normal form. 0/3825 useless extension candidates. Maximal degree in co-relation 10825. Up to 4704 conditions per place. [2023-11-19 08:00:33,789 INFO L140 encePairwiseOnDemand]: 299/307 looper letters, 58 selfloop transitions, 6 changer transitions 0/70 dead transitions. [2023-11-19 08:00:33,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 308 flow [2023-11-19 08:00:33,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:00:33,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:00:33,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 590 transitions. [2023-11-19 08:00:33,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804560260586319 [2023-11-19 08:00:33,794 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 590 transitions. [2023-11-19 08:00:33,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 590 transitions. [2023-11-19 08:00:33,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:33,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 590 transitions. [2023-11-19 08:00:33,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 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 08:00:33,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 307.0) internal successors, (1535), 5 states have internal predecessors, (1535), 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 08:00:33,805 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 307.0) internal successors, (1535), 5 states have internal predecessors, (1535), 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 08:00:33,806 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 114 flow. Second operand 4 states and 590 transitions. [2023-11-19 08:00:33,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 308 flow [2023-11-19 08:00:33,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 70 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:00:33,812 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 163 flow [2023-11-19 08:00:33,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=163, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2023-11-19 08:00:33,816 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 7 predicate places. [2023-11-19 08:00:33,816 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 163 flow [2023-11-19 08:00:33,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.25) internal successors, (525), 4 states have internal predecessors, (525), 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 08:00:33,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:33,818 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-19 08:00:33,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:00:33,818 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-19 08:00:33,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:33,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1224284088, now seen corresponding path program 1 times [2023-11-19 08:00:33,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:33,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699991607] [2023-11-19 08:00:33,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:33,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:33,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:33,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:33,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699991607] [2023-11-19 08:00:33,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699991607] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:33,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177289030] [2023-11-19 08:00:33,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:33,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:33,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d2592f-a0bb-4f70-92b4-1b3ea1eb2767/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:33,942 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d2592f-a0bb-4f70-92b4-1b3ea1eb2767/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:33,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d2592f-a0bb-4f70-92b4-1b3ea1eb2767/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:00:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:34,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:00:34,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:34,119 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:34,119 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:00:34,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177289030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:34,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:00:34,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-19 08:00:34,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832415988] [2023-11-19 08:00:34,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:34,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:00:34,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:34,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:00:34,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:00:34,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 307 [2023-11-19 08:00:34,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 163 flow. Second operand has 4 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 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 08:00:34,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:34,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 307 [2023-11-19 08:00:34,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:35,068 INFO L124 PetriNetUnfolderBase]: 2838/4591 cut-off events. [2023-11-19 08:00:35,068 INFO L125 PetriNetUnfolderBase]: For 926/926 co-relation queries the response was YES. [2023-11-19 08:00:35,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10820 conditions, 4591 events. 2838/4591 cut-off events. For 926/926 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 30689 event pairs, 578 based on Foata normal form. 0/3740 useless extension candidates. Maximal degree in co-relation 8127. Up to 2621 conditions per place. [2023-11-19 08:00:35,127 INFO L140 encePairwiseOnDemand]: 303/307 looper letters, 79 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2023-11-19 08:00:35,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 88 transitions, 430 flow [2023-11-19 08:00:35,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:00:35,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:00:35,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 612 transitions. [2023-11-19 08:00:35,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.498371335504886 [2023-11-19 08:00:35,132 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 612 transitions. [2023-11-19 08:00:35,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 612 transitions. [2023-11-19 08:00:35,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:35,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 612 transitions. [2023-11-19 08:00:35,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 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 08:00:35,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 307.0) internal successors, (1535), 5 states have internal predecessors, (1535), 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 08:00:35,143 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 307.0) internal successors, (1535), 5 states have internal predecessors, (1535), 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 08:00:35,143 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 163 flow. Second operand 4 states and 612 transitions. [2023-11-19 08:00:35,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 88 transitions, 430 flow [2023-11-19 08:00:35,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 88 transitions, 430 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:00:35,157 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 165 flow [2023-11-19 08:00:35,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2023-11-19 08:00:35,159 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 9 predicate places. [2023-11-19 08:00:35,160 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 165 flow [2023-11-19 08:00:35,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 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 08:00:35,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:35,161 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-19 08:00:35,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d2592f-a0bb-4f70-92b4-1b3ea1eb2767/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:35,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d2592f-a0bb-4f70-92b4-1b3ea1eb2767/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:35,385 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-19 08:00:35,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:35,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1224284056, now seen corresponding path program 1 times [2023-11-19 08:00:35,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:35,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350484220] [2023-11-19 08:00:35,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:35,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:35,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:00:35,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:35,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350484220] [2023-11-19 08:00:35,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350484220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:35,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:35,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:00:35,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145533877] [2023-11-19 08:00:35,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:35,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:35,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:35,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:35,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:35,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 307 [2023-11-19 08:00:35,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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 08:00:35,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:35,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 307 [2023-11-19 08:00:35,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:36,196 INFO L124 PetriNetUnfolderBase]: 2512/4050 cut-off events. [2023-11-19 08:00:36,196 INFO L125 PetriNetUnfolderBase]: For 857/857 co-relation queries the response was YES. [2023-11-19 08:00:36,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9701 conditions, 4050 events. 2512/4050 cut-off events. For 857/857 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 25459 event pairs, 581 based on Foata normal form. 0/3446 useless extension candidates. Maximal degree in co-relation 7271. Up to 3145 conditions per place. [2023-11-19 08:00:36,222 INFO L140 encePairwiseOnDemand]: 303/307 looper letters, 67 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2023-11-19 08:00:36,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 77 transitions, 387 flow [2023-11-19 08:00:36,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:36,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:00:36,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 463 transitions. [2023-11-19 08:00:36,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50271444082519 [2023-11-19 08:00:36,225 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 463 transitions. [2023-11-19 08:00:36,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 463 transitions. [2023-11-19 08:00:36,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:36,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 463 transitions. [2023-11-19 08:00:36,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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 08:00:36,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 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 08:00:36,232 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 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 08:00:36,232 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 165 flow. Second operand 3 states and 463 transitions. [2023-11-19 08:00:36,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 77 transitions, 387 flow [2023-11-19 08:00:36,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 77 transitions, 383 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:00:36,240 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 173 flow [2023-11-19 08:00:36,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2023-11-19 08:00:36,244 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 9 predicate places. [2023-11-19 08:00:36,244 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 173 flow [2023-11-19 08:00:36,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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 08:00:36,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:36,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:36,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:00:36,245 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-19 08:00:36,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:36,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1930375500, now seen corresponding path program 1 times [2023-11-19 08:00:36,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:36,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144840990] [2023-11-19 08:00:36,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:36,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:36,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:36,493 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 08:00:36,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:36,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144840990] [2023-11-19 08:00:36,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144840990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:36,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:36,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:00:36,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150267808] [2023-11-19 08:00:36,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:36,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:00:36,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:36,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:00:36,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:00:36,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 307 [2023-11-19 08:00:36,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 127.33333333333333) internal successors, (764), 6 states have internal predecessors, (764), 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 08:00:36,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:36,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 307 [2023-11-19 08:00:36,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:37,630 INFO L124 PetriNetUnfolderBase]: 3525/5874 cut-off events. [2023-11-19 08:00:37,630 INFO L125 PetriNetUnfolderBase]: For 3578/3578 co-relation queries the response was YES. [2023-11-19 08:00:37,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14214 conditions, 5874 events. 3525/5874 cut-off events. For 3578/3578 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 38127 event pairs, 614 based on Foata normal form. 0/5126 useless extension candidates. Maximal degree in co-relation 11500. Up to 3256 conditions per place. [2023-11-19 08:00:37,672 INFO L140 encePairwiseOnDemand]: 290/307 looper letters, 126 selfloop transitions, 30 changer transitions 0/162 dead transitions. [2023-11-19 08:00:37,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 162 transitions, 863 flow [2023-11-19 08:00:37,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:00:37,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 08:00:37,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1290 transitions. [2023-11-19 08:00:37,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46688382193268185 [2023-11-19 08:00:37,684 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1290 transitions. [2023-11-19 08:00:37,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1290 transitions. [2023-11-19 08:00:37,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:37,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1290 transitions. [2023-11-19 08:00:37,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 143.33333333333334) internal successors, (1290), 9 states have internal predecessors, (1290), 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 08:00:37,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 307.0) internal successors, (3070), 10 states have internal predecessors, (3070), 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 08:00:37,706 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 307.0) internal successors, (3070), 10 states have internal predecessors, (3070), 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 08:00:37,706 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 173 flow. Second operand 9 states and 1290 transitions. [2023-11-19 08:00:37,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 162 transitions, 863 flow [2023-11-19 08:00:37,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 162 transitions, 845 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:00:37,717 INFO L231 Difference]: Finished difference. Result has 69 places, 72 transitions, 400 flow [2023-11-19 08:00:37,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=400, PETRI_PLACES=69, PETRI_TRANSITIONS=72} [2023-11-19 08:00:37,719 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 20 predicate places. [2023-11-19 08:00:37,719 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 72 transitions, 400 flow [2023-11-19 08:00:37,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.33333333333333) internal successors, (764), 6 states have internal predecessors, (764), 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 08:00:37,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:37,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:37,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:00:37,720 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-19 08:00:37,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:37,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1930375512, now seen corresponding path program 1 times [2023-11-19 08:00:37,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:37,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379058948] [2023-11-19 08:00:37,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:37,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:37,866 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 08:00:37,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:37,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379058948] [2023-11-19 08:00:37,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379058948] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:37,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:37,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:00:37,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827460286] [2023-11-19 08:00:37,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:37,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:00:37,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:37,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:00:37,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:00:37,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 307 [2023-11-19 08:00:37,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 72 transitions, 400 flow. Second operand has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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 08:00:37,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:37,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 307 [2023-11-19 08:00:37,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:39,104 INFO L124 PetriNetUnfolderBase]: 3679/6365 cut-off events. [2023-11-19 08:00:39,104 INFO L125 PetriNetUnfolderBase]: For 8732/8732 co-relation queries the response was YES. [2023-11-19 08:00:39,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19003 conditions, 6365 events. 3679/6365 cut-off events. For 8732/8732 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 43328 event pairs, 887 based on Foata normal form. 330/6685 useless extension candidates. Maximal degree in co-relation 14584. Up to 2799 conditions per place. [2023-11-19 08:00:39,168 INFO L140 encePairwiseOnDemand]: 293/307 looper letters, 115 selfloop transitions, 44 changer transitions 0/165 dead transitions. [2023-11-19 08:00:39,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 165 transitions, 1178 flow [2023-11-19 08:00:39,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:00:39,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:00:39,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 758 transitions. [2023-11-19 08:00:39,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4938110749185668 [2023-11-19 08:00:39,172 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 758 transitions. [2023-11-19 08:00:39,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 758 transitions. [2023-11-19 08:00:39,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:39,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 758 transitions. [2023-11-19 08:00:39,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 151.6) internal successors, (758), 5 states have internal predecessors, (758), 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 08:00:39,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 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 08:00:39,181 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 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 08:00:39,182 INFO L175 Difference]: Start difference. First operand has 69 places, 72 transitions, 400 flow. Second operand 5 states and 758 transitions. [2023-11-19 08:00:39,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 165 transitions, 1178 flow [2023-11-19 08:00:39,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 165 transitions, 1155 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-19 08:00:39,232 INFO L231 Difference]: Finished difference. Result has 75 places, 103 transitions, 833 flow [2023-11-19 08:00:39,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=833, PETRI_PLACES=75, PETRI_TRANSITIONS=103} [2023-11-19 08:00:39,235 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 26 predicate places. [2023-11-19 08:00:39,235 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 103 transitions, 833 flow [2023-11-19 08:00:39,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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 08:00:39,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:39,236 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 08:00:39,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:00:39,237 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-19 08:00:39,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:39,237 INFO L85 PathProgramCache]: Analyzing trace with hash 284105143, now seen corresponding path program 1 times [2023-11-19 08:00:39,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:39,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759345966] [2023-11-19 08:00:39,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:39,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:39,273 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:00:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:39,311 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:00:39,311 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:00:39,311 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2023-11-19 08:00:39,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2023-11-19 08:00:39,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2023-11-19 08:00:39,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2023-11-19 08:00:39,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2023-11-19 08:00:39,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2023-11-19 08:00:39,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2023-11-19 08:00:39,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2023-11-19 08:00:39,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2023-11-19 08:00:39,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2023-11-19 08:00:39,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2023-11-19 08:00:39,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2023-11-19 08:00:39,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2023-11-19 08:00:39,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2023-11-19 08:00:39,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2023-11-19 08:00:39,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:00:39,317 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:39,319 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:00:39,319 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 08:00:39,366 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:00:39,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 201 transitions, 420 flow [2023-11-19 08:00:39,468 INFO L124 PetriNetUnfolderBase]: 38/336 cut-off events. [2023-11-19 08:00:39,468 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 08:00:39,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 336 events. 38/336 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1145 event pairs, 0 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 251. Up to 8 conditions per place. [2023-11-19 08:00:39,471 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 201 transitions, 420 flow [2023-11-19 08:00:39,475 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 201 transitions, 420 flow [2023-11-19 08:00:39,475 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:00:39,475 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 201 transitions, 420 flow [2023-11-19 08:00:39,475 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 201 transitions, 420 flow [2023-11-19 08:00:39,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 201 transitions, 420 flow [2023-11-19 08:00:39,536 INFO L124 PetriNetUnfolderBase]: 38/336 cut-off events. [2023-11-19 08:00:39,537 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 08:00:39,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 336 events. 38/336 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1145 event pairs, 0 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 251. Up to 8 conditions per place. [2023-11-19 08:00:39,561 INFO L119 LiptonReduction]: Number of co-enabled transitions 21600 [2023-11-19 08:00:44,230 INFO L134 LiptonReduction]: Checked pairs total: 48471 [2023-11-19 08:00:44,230 INFO L136 LiptonReduction]: Total number of compositions: 176 [2023-11-19 08:00:44,232 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:00:44,232 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;@30b423a7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:00:44,232 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-19 08:00:44,235 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:00:44,235 INFO L124 PetriNetUnfolderBase]: 3/13 cut-off events. [2023-11-19 08:00:44,235 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:00:44,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:44,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:00:44,236 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-19 08:00:44,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:44,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1180294611, now seen corresponding path program 1 times [2023-11-19 08:00:44,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:44,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525389955] [2023-11-19 08:00:44,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:44,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:44,279 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 08:00:44,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:44,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525389955] [2023-11-19 08:00:44,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525389955] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:44,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:44,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:00:44,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086949584] [2023-11-19 08:00:44,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:44,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:44,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:44,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:44,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:44,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 377 [2023-11-19 08:00:44,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 81 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 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 08:00:44,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:44,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 377 [2023-11-19 08:00:44,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:00:54,714 INFO L124 PetriNetUnfolderBase]: 77017/108132 cut-off events. [2023-11-19 08:00:54,714 INFO L125 PetriNetUnfolderBase]: For 1261/1261 co-relation queries the response was YES. [2023-11-19 08:00:54,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215331 conditions, 108132 events. 77017/108132 cut-off events. For 1261/1261 co-relation queries the response was YES. Maximal size of possible extension queue 3841. Compared 806537 event pairs, 49933 based on Foata normal form. 12494/86933 useless extension candidates. Maximal degree in co-relation 21019. Up to 106359 conditions per place. [2023-11-19 08:00:55,544 INFO L140 encePairwiseOnDemand]: 351/377 looper letters, 64 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-11-19 08:00:55,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 74 transitions, 298 flow [2023-11-19 08:00:55,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:55,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:00:55,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 600 transitions. [2023-11-19 08:00:55,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5305039787798409 [2023-11-19 08:00:55,548 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 600 transitions. [2023-11-19 08:00:55,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 600 transitions. [2023-11-19 08:00:55,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:00:55,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 600 transitions. [2023-11-19 08:00:55,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 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 08:00:55,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 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 08:00:55,557 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 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 08:00:55,557 INFO L175 Difference]: Start difference. First operand has 67 places, 81 transitions, 180 flow. Second operand 3 states and 600 transitions. [2023-11-19 08:00:55,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 74 transitions, 298 flow [2023-11-19 08:00:55,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 74 transitions, 296 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-19 08:00:55,561 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 152 flow [2023-11-19 08:00:55,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2023-11-19 08:00:55,564 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 3 predicate places. [2023-11-19 08:00:55,564 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 152 flow [2023-11-19 08:00:55,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 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 08:00:55,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:00:55,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:55,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 08:00:55,565 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-19 08:00:55,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:55,566 INFO L85 PathProgramCache]: Analyzing trace with hash 400853165, now seen corresponding path program 1 times [2023-11-19 08:00:55,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:55,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811474147] [2023-11-19 08:00:55,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:55,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:55,704 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 08:00:55,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:55,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811474147] [2023-11-19 08:00:55,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811474147] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:55,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:55,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:00:55,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830750802] [2023-11-19 08:00:55,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:55,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:00:55,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:55,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:00:55,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:00:55,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 377 [2023-11-19 08:00:55,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 163.25) internal successors, (653), 4 states have internal predecessors, (653), 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 08:00:55,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:00:55,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 377 [2023-11-19 08:00:55,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand