./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/reorder_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2729241-71bd-45d5-8f97-c399570e0451/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2729241-71bd-45d5-8f97-c399570e0451/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_c2729241-71bd-45d5-8f97-c399570e0451/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2729241-71bd-45d5-8f97-c399570e0451/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/reorder_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2729241-71bd-45d5-8f97-c399570e0451/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_c2729241-71bd-45d5-8f97-c399570e0451/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 eaeb1d72262bd1e189945b98598b3acb68c08676109949c39074605b8c62cb69 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:47:54,283 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:47:54,378 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2729241-71bd-45d5-8f97-c399570e0451/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:47:54,384 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:47:54,385 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:47:54,411 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:47:54,412 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:47:54,412 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:47:54,413 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:47:54,414 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:47:54,415 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:47:54,415 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:47:54,416 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:47:54,417 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:47:54,418 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:47:54,418 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:47:54,419 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:47:54,420 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:47:54,420 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:47:54,421 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:47:54,422 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:47:54,422 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:47:54,423 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:47:54,424 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:47:54,424 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:47:54,425 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:47:54,426 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:47:54,426 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:47:54,427 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:47:54,428 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:47:54,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:54,429 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:47:54,429 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:47:54,430 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:47:54,430 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:47:54,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:47:54,432 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:47:54,432 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:47:54,432 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:47:54,433 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:47:54,433 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:47:54,440 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_c2729241-71bd-45d5-8f97-c399570e0451/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2729241-71bd-45d5-8f97-c399570e0451/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eaeb1d72262bd1e189945b98598b3acb68c08676109949c39074605b8c62cb69 [2023-11-19 07:47:54,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:47:54,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:47:54,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:47:54,831 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:47:54,831 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:47:54,833 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2729241-71bd-45d5-8f97-c399570e0451/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread/reorder_2.i [2023-11-19 07:47:58,068 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:47:58,511 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:47:58,511 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2729241-71bd-45d5-8f97-c399570e0451/sv-benchmarks/c/pthread/reorder_2.i [2023-11-19 07:47:58,532 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2729241-71bd-45d5-8f97-c399570e0451/bin/uautomizer-verify-uCwYo4JHxu/data/882b245cb/a58ceaa9d5dc4ff1a9429ce8c2a37f6e/FLAG1d1ab4ad2 [2023-11-19 07:47:58,546 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2729241-71bd-45d5-8f97-c399570e0451/bin/uautomizer-verify-uCwYo4JHxu/data/882b245cb/a58ceaa9d5dc4ff1a9429ce8c2a37f6e [2023-11-19 07:47:58,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:47:58,551 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:47:58,552 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:58,552 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:47:58,558 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:47:58,559 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:58" (1/1) ... [2023-11-19 07:47:58,560 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63297df0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:58, skipping insertion in model container [2023-11-19 07:47:58,560 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:58" (1/1) ... [2023-11-19 07:47:58,613 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:47:59,403 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:59,413 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:47:59,474 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:59,563 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:47:59,564 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:47:59,564 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:47:59,572 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:47:59,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:59 WrapperNode [2023-11-19 07:47:59,573 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:59,575 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:59,575 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:47:59,575 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:47:59,582 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:59" (1/1) ... [2023-11-19 07:47:59,611 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:59" (1/1) ... [2023-11-19 07:47:59,649 INFO L138 Inliner]: procedures = 374, calls = 55, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 192 [2023-11-19 07:47:59,654 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:59,655 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:47:59,655 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:47:59,656 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:47:59,669 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:59" (1/1) ... [2023-11-19 07:47:59,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:59" (1/1) ... [2023-11-19 07:47:59,675 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:59" (1/1) ... [2023-11-19 07:47:59,675 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:59" (1/1) ... [2023-11-19 07:47:59,685 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:59" (1/1) ... [2023-11-19 07:47:59,689 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:59" (1/1) ... [2023-11-19 07:47:59,692 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:59" (1/1) ... [2023-11-19 07:47:59,695 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:59" (1/1) ... [2023-11-19 07:47:59,699 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:47:59,700 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:47:59,714 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:47:59,715 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:47:59,716 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:59" (1/1) ... [2023-11-19 07:47:59,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:59,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2729241-71bd-45d5-8f97-c399570e0451/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:59,781 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2729241-71bd-45d5-8f97-c399570e0451/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:47:59,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2729241-71bd-45d5-8f97-c399570e0451/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:47:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2023-11-19 07:47:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:47:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:47:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:47:59,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:47:59,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:47:59,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:47:59,834 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2023-11-19 07:47:59,834 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2023-11-19 07:47:59,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:47:59,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:47:59,835 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2023-11-19 07:47:59,835 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2023-11-19 07:47:59,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:47:59,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:47:59,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:47:59,837 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:48:00,022 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:48:00,025 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:48:00,440 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:48:00,454 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:48:00,455 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 07:48:00,460 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:00 BoogieIcfgContainer [2023-11-19 07:48:00,460 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:48:00,464 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:48:00,464 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:48:00,468 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:48:00,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:47:58" (1/3) ... [2023-11-19 07:48:00,469 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f48d2cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:00, skipping insertion in model container [2023-11-19 07:48:00,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:59" (2/3) ... [2023-11-19 07:48:00,470 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f48d2cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:00, skipping insertion in model container [2023-11-19 07:48:00,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:00" (3/3) ... [2023-11-19 07:48:00,472 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_2.i [2023-11-19 07:48:00,483 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:48:00,496 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:48:00,496 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-19 07:48:00,497 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:48:00,604 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 07:48:00,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 211 transitions, 442 flow [2023-11-19 07:48:00,812 INFO L124 PetriNetUnfolderBase]: 39/428 cut-off events. [2023-11-19 07:48:00,812 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-19 07:48:00,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 428 events. 39/428 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1585 event pairs, 0 based on Foata normal form. 0/365 useless extension candidates. Maximal degree in co-relation 220. Up to 8 conditions per place. [2023-11-19 07:48:00,821 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 211 transitions, 442 flow [2023-11-19 07:48:00,829 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 211 transitions, 442 flow [2023-11-19 07:48:00,833 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:48:00,844 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 211 transitions, 442 flow [2023-11-19 07:48:00,847 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 211 transitions, 442 flow [2023-11-19 07:48:00,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 211 transitions, 442 flow [2023-11-19 07:48:00,924 INFO L124 PetriNetUnfolderBase]: 39/428 cut-off events. [2023-11-19 07:48:00,924 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-19 07:48:00,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 428 events. 39/428 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1585 event pairs, 0 based on Foata normal form. 0/365 useless extension candidates. Maximal degree in co-relation 220. Up to 8 conditions per place. [2023-11-19 07:48:00,956 INFO L119 LiptonReduction]: Number of co-enabled transitions 4298 [2023-11-19 07:48:17,122 INFO L134 LiptonReduction]: Checked pairs total: 6362 [2023-11-19 07:48:17,122 INFO L136 LiptonReduction]: Total number of compositions: 225 [2023-11-19 07:48:17,138 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:48:17,145 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;@2e3f371d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:48:17,146 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-19 07:48:17,151 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:48:17,151 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-11-19 07:48:17,152 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:48:17,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:17,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:48:17,153 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-19 07:48:17,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:17,158 INFO L85 PathProgramCache]: Analyzing trace with hash 23728322, now seen corresponding path program 1 times [2023-11-19 07:48:17,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:17,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278302729] [2023-11-19 07:48:17,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:17,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:17,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:17,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:17,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278302729] [2023-11-19 07:48:17,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278302729] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:17,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:17,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:48:17,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682614252] [2023-11-19 07:48:17,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:17,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:48:17,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:17,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:48:17,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:48:17,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 436 [2023-11-19 07:48:17,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:17,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:17,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 436 [2023-11-19 07:48:17,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:18,177 INFO L124 PetriNetUnfolderBase]: 190/433 cut-off events. [2023-11-19 07:48:18,178 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-11-19 07:48:18,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869 conditions, 433 events. 190/433 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1963 event pairs, 24 based on Foata normal form. 0/334 useless extension candidates. Maximal degree in co-relation 589. Up to 188 conditions per place. [2023-11-19 07:48:18,185 INFO L140 encePairwiseOnDemand]: 418/436 looper letters, 37 selfloop transitions, 12 changer transitions 4/57 dead transitions. [2023-11-19 07:48:18,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 57 transitions, 252 flow [2023-11-19 07:48:18,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:48:18,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:48:18,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 760 transitions. [2023-11-19 07:48:18,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43577981651376146 [2023-11-19 07:48:18,217 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 760 transitions. [2023-11-19 07:48:18,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 760 transitions. [2023-11-19 07:48:18,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:18,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 760 transitions. [2023-11-19 07:48:18,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:18,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 436.0) internal successors, (2180), 5 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:18,245 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 436.0) internal successors, (2180), 5 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:18,247 INFO L175 Difference]: Start difference. First operand has 36 places, 36 transitions, 92 flow. Second operand 4 states and 760 transitions. [2023-11-19 07:48:18,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 57 transitions, 252 flow [2023-11-19 07:48:18,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 57 transitions, 252 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:48:18,255 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 158 flow [2023-11-19 07:48:18,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=436, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2023-11-19 07:48:18,262 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2023-11-19 07:48:18,262 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 158 flow [2023-11-19 07:48:18,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:18,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:18,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:48:18,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:48:18,264 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-19 07:48:18,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:18,277 INFO L85 PathProgramCache]: Analyzing trace with hash 23728320, now seen corresponding path program 1 times [2023-11-19 07:48:18,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:18,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040931601] [2023-11-19 07:48:18,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:18,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:18,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:18,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:18,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040931601] [2023-11-19 07:48:18,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040931601] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:18,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:18,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:48:18,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590002159] [2023-11-19 07:48:18,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:18,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:48:18,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:18,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:18,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:18,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 436 [2023-11-19 07:48:18,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:18,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:18,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 436 [2023-11-19 07:48:18,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:18,624 INFO L124 PetriNetUnfolderBase]: 141/336 cut-off events. [2023-11-19 07:48:18,625 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2023-11-19 07:48:18,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 815 conditions, 336 events. 141/336 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1433 event pairs, 132 based on Foata normal form. 31/367 useless extension candidates. Maximal degree in co-relation 546. Up to 306 conditions per place. [2023-11-19 07:48:18,628 INFO L140 encePairwiseOnDemand]: 431/436 looper letters, 26 selfloop transitions, 1 changer transitions 2/33 dead transitions. [2023-11-19 07:48:18,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 194 flow [2023-11-19 07:48:18,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:18,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:48:18,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 571 transitions. [2023-11-19 07:48:18,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43654434250764523 [2023-11-19 07:48:18,633 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 571 transitions. [2023-11-19 07:48:18,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 571 transitions. [2023-11-19 07:48:18,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:18,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 571 transitions. [2023-11-19 07:48:18,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:18,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 436.0) internal successors, (1744), 4 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:18,642 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 436.0) internal successors, (1744), 4 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:18,642 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 158 flow. Second operand 3 states and 571 transitions. [2023-11-19 07:48:18,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 194 flow [2023-11-19 07:48:18,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 190 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:48:18,646 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 124 flow [2023-11-19 07:48:18,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=436, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2023-11-19 07:48:18,647 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2023-11-19 07:48:18,647 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 124 flow [2023-11-19 07:48:18,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:18,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:18,648 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:48:18,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:48:18,649 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-19 07:48:18,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:18,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1328101592, now seen corresponding path program 1 times [2023-11-19 07:48:18,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:18,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809359201] [2023-11-19 07:48:18,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:18,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:18,714 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:48:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:18,784 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:48:18,784 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:48:18,786 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-11-19 07:48:18,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2023-11-19 07:48:18,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2023-11-19 07:48:18,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2023-11-19 07:48:18,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2023-11-19 07:48:18,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2023-11-19 07:48:18,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2023-11-19 07:48:18,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2023-11-19 07:48:18,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2023-11-19 07:48:18,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2023-11-19 07:48:18,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:48:18,791 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-19 07:48:18,794 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:48:18,794 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:48:18,829 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-19 07:48:18,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 239 transitions, 522 flow [2023-11-19 07:48:19,042 INFO L124 PetriNetUnfolderBase]: 155/1385 cut-off events. [2023-11-19 07:48:19,042 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-19 07:48:19,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1474 conditions, 1385 events. 155/1385 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 7984 event pairs, 2 based on Foata normal form. 0/1167 useless extension candidates. Maximal degree in co-relation 791. Up to 32 conditions per place. [2023-11-19 07:48:19,052 INFO L82 GeneralOperation]: Start removeDead. Operand has 224 places, 239 transitions, 522 flow [2023-11-19 07:48:19,060 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 224 places, 239 transitions, 522 flow [2023-11-19 07:48:19,060 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:48:19,060 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 224 places, 239 transitions, 522 flow [2023-11-19 07:48:19,061 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 224 places, 239 transitions, 522 flow [2023-11-19 07:48:19,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 239 transitions, 522 flow [2023-11-19 07:48:19,288 INFO L124 PetriNetUnfolderBase]: 155/1385 cut-off events. [2023-11-19 07:48:19,288 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-19 07:48:19,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1474 conditions, 1385 events. 155/1385 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 7984 event pairs, 2 based on Foata normal form. 0/1167 useless extension candidates. Maximal degree in co-relation 791. Up to 32 conditions per place. [2023-11-19 07:48:19,335 INFO L119 LiptonReduction]: Number of co-enabled transitions 9980 [2023-11-19 07:48:35,169 INFO L134 LiptonReduction]: Checked pairs total: 19014 [2023-11-19 07:48:35,170 INFO L136 LiptonReduction]: Total number of compositions: 254 [2023-11-19 07:48:35,172 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:48:35,173 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;@2e3f371d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:48:35,174 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-19 07:48:35,178 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:48:35,178 INFO L124 PetriNetUnfolderBase]: 1/18 cut-off events. [2023-11-19 07:48:35,179 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:48:35,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:35,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:48:35,179 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-19 07:48:35,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:35,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1230456532, now seen corresponding path program 1 times [2023-11-19 07:48:35,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:35,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43277016] [2023-11-19 07:48:35,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:35,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:35,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:35,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:35,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43277016] [2023-11-19 07:48:35,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43277016] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:35,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:35,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:48:35,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595846012] [2023-11-19 07:48:35,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:35,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:48:35,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:35,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:35,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:35,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 493 [2023-11-19 07:48:35,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 49 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:35,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:35,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 493 [2023-11-19 07:48:35,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:36,676 INFO L124 PetriNetUnfolderBase]: 6751/10613 cut-off events. [2023-11-19 07:48:36,677 INFO L125 PetriNetUnfolderBase]: For 1162/1162 co-relation queries the response was YES. [2023-11-19 07:48:36,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21591 conditions, 10613 events. 6751/10613 cut-off events. For 1162/1162 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 63458 event pairs, 2994 based on Foata normal form. 0/9126 useless extension candidates. Maximal degree in co-relation 14568. Up to 6237 conditions per place. [2023-11-19 07:48:36,766 INFO L140 encePairwiseOnDemand]: 474/493 looper letters, 59 selfloop transitions, 8 changer transitions 2/75 dead transitions. [2023-11-19 07:48:36,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 75 transitions, 356 flow [2023-11-19 07:48:36,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:36,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:48:36,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 681 transitions. [2023-11-19 07:48:36,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.460446247464503 [2023-11-19 07:48:36,771 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 681 transitions. [2023-11-19 07:48:36,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 681 transitions. [2023-11-19 07:48:36,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:36,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 681 transitions. [2023-11-19 07:48:36,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:36,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 493.0) internal successors, (1972), 4 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:36,781 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 493.0) internal successors, (1972), 4 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:36,781 INFO L175 Difference]: Start difference. First operand has 48 places, 49 transitions, 142 flow. Second operand 3 states and 681 transitions. [2023-11-19 07:48:36,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 75 transitions, 356 flow [2023-11-19 07:48:36,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 75 transitions, 356 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:48:36,799 INFO L231 Difference]: Finished difference. Result has 52 places, 53 transitions, 212 flow [2023-11-19 07:48:36,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=493, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=52, PETRI_TRANSITIONS=53} [2023-11-19 07:48:36,803 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 4 predicate places. [2023-11-19 07:48:36,803 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 53 transitions, 212 flow [2023-11-19 07:48:36,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:36,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:36,804 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-19 07:48:36,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:48:36,805 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-19 07:48:36,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:36,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1373083555, now seen corresponding path program 1 times [2023-11-19 07:48:36,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:36,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444049844] [2023-11-19 07:48:36,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:36,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:36,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:36,898 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 07:48:36,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:36,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444049844] [2023-11-19 07:48:36,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444049844] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:36,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:36,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:48:36,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049674894] [2023-11-19 07:48:36,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:36,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:48:36,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:36,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:36,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:36,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 493 [2023-11-19 07:48:36,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 53 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:36,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:36,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 493 [2023-11-19 07:48:36,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:38,082 INFO L124 PetriNetUnfolderBase]: 5610/8976 cut-off events. [2023-11-19 07:48:38,083 INFO L125 PetriNetUnfolderBase]: For 3142/3142 co-relation queries the response was YES. [2023-11-19 07:48:38,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20456 conditions, 8976 events. 5610/8976 cut-off events. For 3142/3142 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 52981 event pairs, 5272 based on Foata normal form. 0/8708 useless extension candidates. Maximal degree in co-relation 6142. Up to 8427 conditions per place. [2023-11-19 07:48:38,152 INFO L140 encePairwiseOnDemand]: 488/493 looper letters, 42 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2023-11-19 07:48:38,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 49 transitions, 282 flow [2023-11-19 07:48:38,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:38,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:48:38,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 640 transitions. [2023-11-19 07:48:38,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43272481406355645 [2023-11-19 07:48:38,163 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 640 transitions. [2023-11-19 07:48:38,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 640 transitions. [2023-11-19 07:48:38,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:38,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 640 transitions. [2023-11-19 07:48:38,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:38,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 493.0) internal successors, (1972), 4 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:38,173 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 493.0) internal successors, (1972), 4 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:38,173 INFO L175 Difference]: Start difference. First operand has 52 places, 53 transitions, 212 flow. Second operand 3 states and 640 transitions. [2023-11-19 07:48:38,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 49 transitions, 282 flow [2023-11-19 07:48:38,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:48:38,184 INFO L231 Difference]: Finished difference. Result has 47 places, 49 transitions, 182 flow [2023-11-19 07:48:38,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=493, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=47, PETRI_TRANSITIONS=49} [2023-11-19 07:48:38,187 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -1 predicate places. [2023-11-19 07:48:38,187 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 49 transitions, 182 flow [2023-11-19 07:48:38,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:38,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:38,189 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-19 07:48:38,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:48:38,189 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-19 07:48:38,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:38,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1373083556, now seen corresponding path program 1 times [2023-11-19 07:48:38,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:38,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616422073] [2023-11-19 07:48:38,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:38,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:38,374 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 07:48:38,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:38,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616422073] [2023-11-19 07:48:38,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616422073] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:48:38,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401857275] [2023-11-19 07:48:38,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:38,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:38,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2729241-71bd-45d5-8f97-c399570e0451/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:38,378 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2729241-71bd-45d5-8f97-c399570e0451/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:38,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2729241-71bd-45d5-8f97-c399570e0451/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:48:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:38,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:48:38,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:39,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 26 [2023-11-19 07:48:39,567 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 07:48:39,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:48:39,612 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 07:48:39,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401857275] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:48:39,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:48:39,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-11-19 07:48:39,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001868031] [2023-11-19 07:48:39,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:48:39,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:48:39,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:39,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:48:39,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:48:39,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 493 [2023-11-19 07:48:39,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 182 flow. Second operand has 11 states, 11 states have (on average 195.9090909090909) internal successors, (2155), 11 states have internal predecessors, (2155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:39,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:39,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 493 [2023-11-19 07:48:39,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:41,165 INFO L124 PetriNetUnfolderBase]: 5500/9069 cut-off events. [2023-11-19 07:48:41,165 INFO L125 PetriNetUnfolderBase]: For 1900/1900 co-relation queries the response was YES. [2023-11-19 07:48:41,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19711 conditions, 9069 events. 5500/9069 cut-off events. For 1900/1900 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 54641 event pairs, 2002 based on Foata normal form. 0/9055 useless extension candidates. Maximal degree in co-relation 19699. Up to 3915 conditions per place. [2023-11-19 07:48:41,210 INFO L140 encePairwiseOnDemand]: 479/493 looper letters, 32 selfloop transitions, 9 changer transitions 74/119 dead transitions. [2023-11-19 07:48:41,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 119 transitions, 634 flow [2023-11-19 07:48:41,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:48:41,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:48:41,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1673 transitions. [2023-11-19 07:48:41,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42418864097363085 [2023-11-19 07:48:41,219 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1673 transitions. [2023-11-19 07:48:41,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1673 transitions. [2023-11-19 07:48:41,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:41,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1673 transitions. [2023-11-19 07:48:41,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 209.125) internal successors, (1673), 8 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:41,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 493.0) internal successors, (4437), 9 states have internal predecessors, (4437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:41,241 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 493.0) internal successors, (4437), 9 states have internal predecessors, (4437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:41,241 INFO L175 Difference]: Start difference. First operand has 47 places, 49 transitions, 182 flow. Second operand 8 states and 1673 transitions. [2023-11-19 07:48:41,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 119 transitions, 634 flow [2023-11-19 07:48:41,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 119 transitions, 633 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:48:41,247 INFO L231 Difference]: Finished difference. Result has 50 places, 28 transitions, 118 flow [2023-11-19 07:48:41,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=493, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=118, PETRI_PLACES=50, PETRI_TRANSITIONS=28} [2023-11-19 07:48:41,252 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 2 predicate places. [2023-11-19 07:48:41,252 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 28 transitions, 118 flow [2023-11-19 07:48:41,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 195.9090909090909) internal successors, (2155), 11 states have internal predecessors, (2155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:41,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:41,254 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:48:41,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2729241-71bd-45d5-8f97-c399570e0451/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:41,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2729241-71bd-45d5-8f97-c399570e0451/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:41,467 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-19 07:48:41,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:41,468 INFO L85 PathProgramCache]: Analyzing trace with hash -978297730, now seen corresponding path program 1 times [2023-11-19 07:48:41,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:41,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610490272] [2023-11-19 07:48:41,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:41,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:41,643 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:48:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:48:41,729 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:48:41,729 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:48:41,729 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-11-19 07:48:41,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2023-11-19 07:48:41,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2023-11-19 07:48:41,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2023-11-19 07:48:41,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2023-11-19 07:48:41,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2023-11-19 07:48:41,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2023-11-19 07:48:41,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2023-11-19 07:48:41,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2023-11-19 07:48:41,732 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2023-11-19 07:48:41,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:48:41,732 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-19 07:48:41,733 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:48:41,733 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:48:41,766 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-11-19 07:48:41,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 267 transitions, 606 flow [2023-11-19 07:48:42,795 INFO L124 PetriNetUnfolderBase]: 653/4714 cut-off events. [2023-11-19 07:48:42,796 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2023-11-19 07:48:42,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5150 conditions, 4714 events. 653/4714 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 37082 event pairs, 64 based on Foata normal form. 0/3967 useless extension candidates. Maximal degree in co-relation 2699. Up to 192 conditions per place. [2023-11-19 07:48:42,838 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 267 transitions, 606 flow [2023-11-19 07:48:42,865 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 267 transitions, 606 flow [2023-11-19 07:48:42,865 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:48:42,865 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 250 places, 267 transitions, 606 flow [2023-11-19 07:48:42,866 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 250 places, 267 transitions, 606 flow [2023-11-19 07:48:42,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 267 transitions, 606 flow [2023-11-19 07:48:43,738 INFO L124 PetriNetUnfolderBase]: 653/4714 cut-off events. [2023-11-19 07:48:43,739 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2023-11-19 07:48:43,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5150 conditions, 4714 events. 653/4714 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 37082 event pairs, 64 based on Foata normal form. 0/3967 useless extension candidates. Maximal degree in co-relation 2699. Up to 192 conditions per place. [2023-11-19 07:48:43,914 INFO L119 LiptonReduction]: Number of co-enabled transitions 17046