./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.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_91e4520d-1563-42a1-8194-77bd25739c45/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91e4520d-1563-42a1-8194-77bd25739c45/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_91e4520d-1563-42a1-8194-77bd25739c45/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91e4520d-1563-42a1-8194-77bd25739c45/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91e4520d-1563-42a1-8194-77bd25739c45/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_91e4520d-1563-42a1-8194-77bd25739c45/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 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:02:34,339 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:02:34,419 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91e4520d-1563-42a1-8194-77bd25739c45/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 08:02:34,425 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:02:34,425 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:02:34,453 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:02:34,454 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:02:34,454 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:02:34,455 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:02:34,456 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:02:34,457 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:02:34,457 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:02:34,458 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:02:34,459 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:02:34,459 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:02:34,460 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:02:34,460 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:02:34,461 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:02:34,461 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:02:34,462 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:02:34,462 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:02:34,463 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:02:34,463 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 08:02:34,464 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:02:34,464 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:02:34,464 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:02:34,465 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:02:34,465 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:02:34,466 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:02:34,466 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:02:34,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:02:34,467 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:02:34,467 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:02:34,468 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:02:34,468 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:02:34,468 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:02:34,468 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:02:34,469 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:02:34,469 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:02:34,469 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:02:34,469 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:02:34,470 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_91e4520d-1563-42a1-8194-77bd25739c45/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91e4520d-1563-42a1-8194-77bd25739c45/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 [2023-11-19 08:02:34,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:02:34,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:02:34,720 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:02:34,721 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:02:34,722 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:02:34,723 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91e4520d-1563-42a1-8194-77bd25739c45/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i [2023-11-19 08:02:37,891 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:02:38,309 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:02:38,310 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91e4520d-1563-42a1-8194-77bd25739c45/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i [2023-11-19 08:02:38,330 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91e4520d-1563-42a1-8194-77bd25739c45/bin/uautomizer-verify-uCwYo4JHxu/data/45cbde74e/89f0ecd331364389977982347b79e08e/FLAGafc0e9b62 [2023-11-19 08:02:38,352 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91e4520d-1563-42a1-8194-77bd25739c45/bin/uautomizer-verify-uCwYo4JHxu/data/45cbde74e/89f0ecd331364389977982347b79e08e [2023-11-19 08:02:38,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:02:38,358 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:02:38,360 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:02:38,360 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:02:38,370 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:02:38,374 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:02:38" (1/1) ... [2023-11-19 08:02:38,375 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dd5e955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:38, skipping insertion in model container [2023-11-19 08:02:38,376 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:02:38" (1/1) ... [2023-11-19 08:02:38,463 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:02:38,862 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:02:38,880 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:02:38,959 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:02:39,018 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:02:39,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:39 WrapperNode [2023-11-19 08:02:39,018 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:02:39,020 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:02:39,020 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:02:39,020 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:02:39,029 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:39" (1/1) ... [2023-11-19 08:02:39,052 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:39" (1/1) ... [2023-11-19 08:02:39,086 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 85 [2023-11-19 08:02:39,086 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:02:39,091 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:02:39,093 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:02:39,093 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:02:39,105 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:39" (1/1) ... [2023-11-19 08:02:39,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:39" (1/1) ... [2023-11-19 08:02:39,109 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:39" (1/1) ... [2023-11-19 08:02:39,110 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:39" (1/1) ... [2023-11-19 08:02:39,116 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:39" (1/1) ... [2023-11-19 08:02:39,121 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:39" (1/1) ... [2023-11-19 08:02:39,124 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:39" (1/1) ... [2023-11-19 08:02:39,125 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:39" (1/1) ... [2023-11-19 08:02:39,129 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:02:39,130 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:02:39,130 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:02:39,130 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:02:39,131 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:39" (1/1) ... [2023-11-19 08:02:39,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:02:39,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91e4520d-1563-42a1-8194-77bd25739c45/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:39,188 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91e4520d-1563-42a1-8194-77bd25739c45/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:02:39,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91e4520d-1563-42a1-8194-77bd25739c45/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:02:39,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:02:39,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:02:39,242 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 08:02:39,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:02:39,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:02:39,243 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 08:02:39,243 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 08:02:39,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:02:39,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:02:39,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:02:39,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:02:39,245 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 08:02:39,412 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:02:39,414 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:02:39,690 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:02:39,710 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:02:39,710 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-19 08:02:39,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:02:39 BoogieIcfgContainer [2023-11-19 08:02:39,715 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:02:39,722 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:02:39,723 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:02:39,726 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:02:39,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:02:38" (1/3) ... [2023-11-19 08:02:39,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60075316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:02:39, skipping insertion in model container [2023-11-19 08:02:39,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:39" (2/3) ... [2023-11-19 08:02:39,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60075316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:02:39, skipping insertion in model container [2023-11-19 08:02:39,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:02:39" (3/3) ... [2023-11-19 08:02:39,730 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_37-indirect_racing.i [2023-11-19 08:02:39,742 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:02:39,756 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:02:39,757 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-19 08:02:39,758 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:02:39,847 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 08:02:39,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 132 transitions, 271 flow [2023-11-19 08:02:40,003 INFO L124 PetriNetUnfolderBase]: 19/173 cut-off events. [2023-11-19 08:02:40,003 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 08:02:40,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 173 events. 19/173 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 461 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2023-11-19 08:02:40,013 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 132 transitions, 271 flow [2023-11-19 08:02:40,019 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 129 transitions, 265 flow [2023-11-19 08:02:40,023 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:02:40,033 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 129 transitions, 265 flow [2023-11-19 08:02:40,036 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 129 transitions, 265 flow [2023-11-19 08:02:40,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 129 transitions, 265 flow [2023-11-19 08:02:40,170 INFO L124 PetriNetUnfolderBase]: 18/170 cut-off events. [2023-11-19 08:02:40,171 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 08:02:40,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 170 events. 18/170 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 461 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2023-11-19 08:02:40,177 INFO L119 LiptonReduction]: Number of co-enabled transitions 4080 [2023-11-19 08:02:44,450 INFO L134 LiptonReduction]: Checked pairs total: 6727 [2023-11-19 08:02:44,450 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-11-19 08:02:44,468 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:02:44,475 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;@bbd73fa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:02:44,476 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-19 08:02:44,480 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:02:44,480 INFO L124 PetriNetUnfolderBase]: 3/13 cut-off events. [2023-11-19 08:02:44,480 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:02:44,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:44,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 08:02:44,482 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 08:02:44,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:44,488 INFO L85 PathProgramCache]: Analyzing trace with hash 15662479, now seen corresponding path program 1 times [2023-11-19 08:02:44,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:44,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72321907] [2023-11-19 08:02:44,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:44,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:44,813 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 08:02:44,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:44,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72321907] [2023-11-19 08:02:44,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72321907] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:44,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:44,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:02:44,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509988856] [2023-11-19 08:02:44,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:44,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:44,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:44,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:44,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:44,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 250 [2023-11-19 08:02:44,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 40 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 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 08:02:44,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:44,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 250 [2023-11-19 08:02:44,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:45,072 INFO L124 PetriNetUnfolderBase]: 112/268 cut-off events. [2023-11-19 08:02:45,073 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 08:02:45,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 526 conditions, 268 events. 112/268 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1223 event pairs, 0 based on Foata normal form. 9/210 useless extension candidates. Maximal degree in co-relation 493. Up to 236 conditions per place. [2023-11-19 08:02:45,083 INFO L140 encePairwiseOnDemand]: 236/250 looper letters, 40 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-11-19 08:02:45,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 44 transitions, 179 flow [2023-11-19 08:02:45,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:45,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:02:45,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 393 transitions. [2023-11-19 08:02:45,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524 [2023-11-19 08:02:45,113 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 393 transitions. [2023-11-19 08:02:45,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 393 transitions. [2023-11-19 08:02:45,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:45,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 393 transitions. [2023-11-19 08:02:45,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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 08:02:45,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 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 08:02:45,137 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 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 08:02:45,140 INFO L175 Difference]: Start difference. First operand has 34 places, 40 transitions, 87 flow. Second operand 3 states and 393 transitions. [2023-11-19 08:02:45,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 44 transitions, 179 flow [2023-11-19 08:02:45,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 179 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:02:45,150 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 73 flow [2023-11-19 08:02:45,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-11-19 08:02:45,159 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2023-11-19 08:02:45,160 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 73 flow [2023-11-19 08:02:45,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 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 08:02:45,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:45,161 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 08:02:45,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:02:45,163 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 08:02:45,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:45,167 INFO L85 PathProgramCache]: Analyzing trace with hash -2128189646, now seen corresponding path program 1 times [2023-11-19 08:02:45,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:45,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331973792] [2023-11-19 08:02:45,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:45,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:02:45,227 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:02:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:02:45,272 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:02:45,273 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:02:45,275 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-19 08:02:45,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-19 08:02:45,278 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-19 08:02:45,278 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-19 08:02:45,279 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-19 08:02:45,279 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-19 08:02:45,279 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-11-19 08:02:45,280 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-11-19 08:02:45,280 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-11-19 08:02:45,280 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-19 08:02:45,281 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-19 08:02:45,281 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-19 08:02:45,281 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-19 08:02:45,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:02:45,282 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 08:02:45,285 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:02:45,285 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 08:02:45,314 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 08:02:45,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 174 transitions, 364 flow [2023-11-19 08:02:45,381 INFO L124 PetriNetUnfolderBase]: 34/294 cut-off events. [2023-11-19 08:02:45,381 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 08:02:45,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 294 events. 34/294 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 963 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 175. Up to 8 conditions per place. [2023-11-19 08:02:45,385 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 174 transitions, 364 flow [2023-11-19 08:02:45,389 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 174 transitions, 364 flow [2023-11-19 08:02:45,389 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:02:45,390 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 174 transitions, 364 flow [2023-11-19 08:02:45,390 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 174 transitions, 364 flow [2023-11-19 08:02:45,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 174 transitions, 364 flow [2023-11-19 08:02:45,435 INFO L124 PetriNetUnfolderBase]: 34/294 cut-off events. [2023-11-19 08:02:45,435 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 08:02:45,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 294 events. 34/294 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 963 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 175. Up to 8 conditions per place. [2023-11-19 08:02:45,453 INFO L119 LiptonReduction]: Number of co-enabled transitions 12880 [2023-11-19 08:02:49,675 INFO L134 LiptonReduction]: Checked pairs total: 24939 [2023-11-19 08:02:49,675 INFO L136 LiptonReduction]: Total number of compositions: 150 [2023-11-19 08:02:49,678 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:02:49,680 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;@bbd73fa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:02:49,680 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-19 08:02:49,683 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:02:49,683 INFO L124 PetriNetUnfolderBase]: 3/14 cut-off events. [2023-11-19 08:02:49,684 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:02:49,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:49,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:02:49,684 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 08:02:49,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:49,685 INFO L85 PathProgramCache]: Analyzing trace with hash 833313710, now seen corresponding path program 1 times [2023-11-19 08:02:49,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:49,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604054526] [2023-11-19 08:02:49,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:49,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:49,780 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 08:02:49,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:49,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604054526] [2023-11-19 08:02:49,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604054526] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:49,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:49,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:02:49,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192772340] [2023-11-19 08:02:49,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:49,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:49,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:49,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:49,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:49,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 324 [2023-11-19 08:02:49,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 66 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 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 08:02:49,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:49,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 324 [2023-11-19 08:02:49,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:50,927 INFO L124 PetriNetUnfolderBase]: 4058/6800 cut-off events. [2023-11-19 08:02:50,928 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-11-19 08:02:50,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13352 conditions, 6800 events. 4058/6800 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 44891 event pairs, 1898 based on Foata normal form. 652/5249 useless extension candidates. Maximal degree in co-relation 1539. Up to 6459 conditions per place. [2023-11-19 08:02:50,994 INFO L140 encePairwiseOnDemand]: 304/324 looper letters, 57 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-11-19 08:02:50,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 66 transitions, 266 flow [2023-11-19 08:02:50,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:50,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:02:50,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 518 transitions. [2023-11-19 08:02:50,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5329218106995884 [2023-11-19 08:02:50,998 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 518 transitions. [2023-11-19 08:02:50,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 518 transitions. [2023-11-19 08:02:50,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:50,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 518 transitions. [2023-11-19 08:02:51,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 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 08:02:51,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 324.0) internal successors, (1296), 4 states have internal predecessors, (1296), 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 08:02:51,008 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 324.0) internal successors, (1296), 4 states have internal predecessors, (1296), 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 08:02:51,008 INFO L175 Difference]: Start difference. First operand has 54 places, 66 transitions, 148 flow. Second operand 3 states and 518 transitions. [2023-11-19 08:02:51,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 66 transitions, 266 flow [2023-11-19 08:02:51,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 266 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:02:51,016 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 134 flow [2023-11-19 08:02:51,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2023-11-19 08:02:51,018 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-11-19 08:02:51,018 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 134 flow [2023-11-19 08:02:51,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 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 08:02:51,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:51,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:51,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:02:51,026 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 08:02:51,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:51,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1956969980, now seen corresponding path program 1 times [2023-11-19 08:02:51,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:51,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581357069] [2023-11-19 08:02:51,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:51,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:51,414 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 08:02:51,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:51,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581357069] [2023-11-19 08:02:51,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581357069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:51,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:51,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:02:51,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442315409] [2023-11-19 08:02:51,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:51,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:02:51,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:51,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:02:51,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:02:51,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 324 [2023-11-19 08:02:51,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 141.5) internal successors, (566), 4 states have internal predecessors, (566), 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 08:02:51,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:51,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 324 [2023-11-19 08:02:51,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:52,502 INFO L124 PetriNetUnfolderBase]: 3632/6075 cut-off events. [2023-11-19 08:02:52,503 INFO L125 PetriNetUnfolderBase]: For 459/459 co-relation queries the response was YES. [2023-11-19 08:02:52,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12718 conditions, 6075 events. 3632/6075 cut-off events. For 459/459 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 38832 event pairs, 1381 based on Foata normal form. 0/4424 useless extension candidates. Maximal degree in co-relation 12630. Up to 5339 conditions per place. [2023-11-19 08:02:52,564 INFO L140 encePairwiseOnDemand]: 316/324 looper letters, 67 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2023-11-19 08:02:52,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 80 transitions, 352 flow [2023-11-19 08:02:52,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:02:52,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:02:52,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 639 transitions. [2023-11-19 08:02:52,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2023-11-19 08:02:52,569 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 639 transitions. [2023-11-19 08:02:52,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 639 transitions. [2023-11-19 08:02:52,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:52,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 639 transitions. [2023-11-19 08:02:52,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 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 08:02:52,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 324.0) internal successors, (1620), 5 states have internal predecessors, (1620), 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 08:02:52,579 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 324.0) internal successors, (1620), 5 states have internal predecessors, (1620), 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 08:02:52,579 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 134 flow. Second operand 4 states and 639 transitions. [2023-11-19 08:02:52,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 80 transitions, 352 flow [2023-11-19 08:02:52,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 80 transitions, 349 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:02:52,589 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 183 flow [2023-11-19 08:02:52,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2023-11-19 08:02:52,593 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2023-11-19 08:02:52,594 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 183 flow [2023-11-19 08:02:52,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.5) internal successors, (566), 4 states have internal predecessors, (566), 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 08:02:52,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:52,595 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-19 08:02:52,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:02:52,596 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 08:02:52,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:52,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1942915674, now seen corresponding path program 1 times [2023-11-19 08:02:52,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:52,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277487912] [2023-11-19 08:02:52,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:52,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:52,705 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 08:02:52,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:52,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277487912] [2023-11-19 08:02:52,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277487912] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:02:52,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925393968] [2023-11-19 08:02:52,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:52,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:52,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91e4520d-1563-42a1-8194-77bd25739c45/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:52,716 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91e4520d-1563-42a1-8194-77bd25739c45/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:52,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91e4520d-1563-42a1-8194-77bd25739c45/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:02:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:52,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:02:52,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:52,979 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 08:02:52,980 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:52,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925393968] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:52,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:02:52,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-19 08:02:52,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589626818] [2023-11-19 08:02:52,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:52,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:02:52,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:52,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:02:52,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:02:53,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 324 [2023-11-19 08:02:53,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 146.75) internal successors, (587), 4 states have internal predecessors, (587), 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 08:02:53,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:53,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 324 [2023-11-19 08:02:53,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:54,001 INFO L124 PetriNetUnfolderBase]: 3308/5484 cut-off events. [2023-11-19 08:02:54,001 INFO L125 PetriNetUnfolderBase]: For 1046/1046 co-relation queries the response was YES. [2023-11-19 08:02:54,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12709 conditions, 5484 events. 3308/5484 cut-off events. For 1046/1046 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 36546 event pairs, 562 based on Foata normal form. 0/4482 useless extension candidates. Maximal degree in co-relation 9699. Up to 3433 conditions per place. [2023-11-19 08:02:54,059 INFO L140 encePairwiseOnDemand]: 320/324 looper letters, 86 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2023-11-19 08:02:54,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 96 transitions, 466 flow [2023-11-19 08:02:54,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:02:54,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:02:54,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 663 transitions. [2023-11-19 08:02:54,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115740740740741 [2023-11-19 08:02:54,064 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 663 transitions. [2023-11-19 08:02:54,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 663 transitions. [2023-11-19 08:02:54,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:54,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 663 transitions. [2023-11-19 08:02:54,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 165.75) internal successors, (663), 4 states have internal predecessors, (663), 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 08:02:54,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 324.0) internal successors, (1620), 5 states have internal predecessors, (1620), 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 08:02:54,075 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 324.0) internal successors, (1620), 5 states have internal predecessors, (1620), 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 08:02:54,075 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 183 flow. Second operand 4 states and 663 transitions. [2023-11-19 08:02:54,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 96 transitions, 466 flow [2023-11-19 08:02:54,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 96 transitions, 466 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:02:54,090 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 185 flow [2023-11-19 08:02:54,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2023-11-19 08:02:54,094 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2023-11-19 08:02:54,094 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 185 flow [2023-11-19 08:02:54,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 146.75) internal successors, (587), 4 states have internal predecessors, (587), 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 08:02:54,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:54,095 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-19 08:02:54,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91e4520d-1563-42a1-8194-77bd25739c45/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:54,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91e4520d-1563-42a1-8194-77bd25739c45/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:54,321 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 08:02:54,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:54,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1942915714, now seen corresponding path program 1 times [2023-11-19 08:02:54,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:54,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034315340] [2023-11-19 08:02:54,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:54,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:54,387 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 08:02:54,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:54,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034315340] [2023-11-19 08:02:54,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034315340] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:54,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:54,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:02:54,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035275316] [2023-11-19 08:02:54,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:54,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:54,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:54,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:54,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:54,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 324 [2023-11-19 08:02:54,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 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 08:02:54,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:02:54,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 324 [2023-11-19 08:02:54,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:02:55,216 INFO L124 PetriNetUnfolderBase]: 2984/4910 cut-off events. [2023-11-19 08:02:55,216 INFO L125 PetriNetUnfolderBase]: For 940/940 co-relation queries the response was YES. [2023-11-19 08:02:55,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11565 conditions, 4910 events. 2984/4910 cut-off events. For 940/940 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 31281 event pairs, 493 based on Foata normal form. 0/4154 useless extension candidates. Maximal degree in co-relation 9309. Up to 3956 conditions per place. [2023-11-19 08:02:55,257 INFO L140 encePairwiseOnDemand]: 320/324 looper letters, 73 selfloop transitions, 4 changer transitions 0/84 dead transitions. [2023-11-19 08:02:55,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 84 transitions, 419 flow [2023-11-19 08:02:55,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:55,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:02:55,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 502 transitions. [2023-11-19 08:02:55,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164609053497943 [2023-11-19 08:02:55,261 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 502 transitions. [2023-11-19 08:02:55,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 502 transitions. [2023-11-19 08:02:55,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:02:55,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 502 transitions. [2023-11-19 08:02:55,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 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 08:02:55,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 324.0) internal successors, (1296), 4 states have internal predecessors, (1296), 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 08:02:55,270 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 324.0) internal successors, (1296), 4 states have internal predecessors, (1296), 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 08:02:55,270 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 185 flow. Second operand 3 states and 502 transitions. [2023-11-19 08:02:55,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 84 transitions, 419 flow [2023-11-19 08:02:55,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 84 transitions, 415 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:02:55,279 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 193 flow [2023-11-19 08:02:55,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2023-11-19 08:02:55,284 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2023-11-19 08:02:55,285 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 193 flow [2023-11-19 08:02:55,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 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 08:02:55,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:02:55,286 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 08:02:55,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:02:55,286 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 08:02:55,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:55,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1168746370, now seen corresponding path program 1 times [2023-11-19 08:02:55,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:55,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326520183] [2023-11-19 08:02:55,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:55,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:02:55,319 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:02:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:02:55,352 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:02:55,352 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:02:55,353 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-19 08:02:55,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-19 08:02:55,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-19 08:02:55,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-19 08:02:55,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-19 08:02:55,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-19 08:02:55,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-19 08:02:55,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-19 08:02:55,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-11-19 08:02:55,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-11-19 08:02:55,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-11-19 08:02:55,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-19 08:02:55,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-19 08:02:55,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-19 08:02:55,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-19 08:02:55,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-19 08:02:55,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-19 08:02:55,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:02:55,361 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-19 08:02:55,362 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:02:55,363 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 08:02:55,414 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 08:02:55,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 216 transitions, 459 flow [2023-11-19 08:02:55,515 INFO L124 PetriNetUnfolderBase]: 54/458 cut-off events. [2023-11-19 08:02:55,515 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 08:02:55,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 458 events. 54/458 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1680 event pairs, 1 based on Foata normal form. 0/368 useless extension candidates. Maximal degree in co-relation 302. Up to 16 conditions per place. [2023-11-19 08:02:55,519 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 216 transitions, 459 flow [2023-11-19 08:02:55,523 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 196 places, 216 transitions, 459 flow [2023-11-19 08:02:55,524 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:02:55,524 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 196 places, 216 transitions, 459 flow [2023-11-19 08:02:55,524 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 196 places, 216 transitions, 459 flow [2023-11-19 08:02:55,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 216 transitions, 459 flow [2023-11-19 08:02:55,596 INFO L124 PetriNetUnfolderBase]: 54/458 cut-off events. [2023-11-19 08:02:55,597 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 08:02:55,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 458 events. 54/458 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1680 event pairs, 1 based on Foata normal form. 0/368 useless extension candidates. Maximal degree in co-relation 302. Up to 16 conditions per place. [2023-11-19 08:02:55,652 INFO L119 LiptonReduction]: Number of co-enabled transitions 24480 [2023-11-19 08:03:00,576 INFO L134 LiptonReduction]: Checked pairs total: 57861 [2023-11-19 08:03:00,577 INFO L136 LiptonReduction]: Total number of compositions: 183 [2023-11-19 08:03:00,579 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:03:00,580 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;@bbd73fa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:03:00,581 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-19 08:03:00,584 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:03:00,585 INFO L124 PetriNetUnfolderBase]: 3/14 cut-off events. [2023-11-19 08:03:00,585 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:03:00,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:00,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:03:00,586 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 08:03:00,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:00,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1255466846, now seen corresponding path program 1 times [2023-11-19 08:03:00,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:00,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713216515] [2023-11-19 08:03:00,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:00,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:00,631 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 08:03:00,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:00,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713216515] [2023-11-19 08:03:00,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713216515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:00,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:00,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:03:00,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084385143] [2023-11-19 08:03:00,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:00,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:03:00,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:00,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:03:00,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:03:00,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 399 [2023-11-19 08:03:00,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 89 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 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 08:03:00,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:00,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 399 [2023-11-19 08:03:00,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:15,224 INFO L124 PetriNetUnfolderBase]: 97896/138654 cut-off events. [2023-11-19 08:03:15,225 INFO L125 PetriNetUnfolderBase]: For 2671/2671 co-relation queries the response was YES. [2023-11-19 08:03:15,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276210 conditions, 138654 events. 97896/138654 cut-off events. For 2671/2671 co-relation queries the response was YES. Maximal size of possible extension queue 3632. Compared 1013177 event pairs, 63646 based on Foata normal form. 10164/106394 useless extension candidates. Maximal degree in co-relation 24451. Up to 135947 conditions per place. [2023-11-19 08:03:16,145 INFO L140 encePairwiseOnDemand]: 373/399 looper letters, 73 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-11-19 08:03:16,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 83 transitions, 343 flow [2023-11-19 08:03:16,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:03:16,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:03:16,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 642 transitions. [2023-11-19 08:03:16,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5363408521303258 [2023-11-19 08:03:16,151 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 642 transitions. [2023-11-19 08:03:16,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 642 transitions. [2023-11-19 08:03:16,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:16,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 642 transitions. [2023-11-19 08:03:16,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 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 08:03:16,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 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 08:03:16,161 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 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 08:03:16,162 INFO L175 Difference]: Start difference. First operand has 72 places, 89 transitions, 205 flow. Second operand 3 states and 642 transitions. [2023-11-19 08:03:16,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 83 transitions, 343 flow [2023-11-19 08:03:16,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 83 transitions, 343 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:03:16,169 INFO L231 Difference]: Finished difference. Result has 75 places, 69 transitions, 179 flow [2023-11-19 08:03:16,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=75, PETRI_TRANSITIONS=69} [2023-11-19 08:03:16,172 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 3 predicate places. [2023-11-19 08:03:16,172 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 69 transitions, 179 flow [2023-11-19 08:03:16,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 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 08:03:16,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:16,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:16,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:03:16,174 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-19 08:03:16,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:16,174 INFO L85 PathProgramCache]: Analyzing trace with hash -374813284, now seen corresponding path program 1 times [2023-11-19 08:03:16,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:16,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048954545] [2023-11-19 08:03:16,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:16,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:16,335 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 08:03:16,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:16,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048954545] [2023-11-19 08:03:16,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048954545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:16,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:16,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:03:16,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115154920] [2023-11-19 08:03:16,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:16,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:03:16,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:16,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:03:16,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:03:16,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 399 [2023-11-19 08:03:16,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 173.5) internal successors, (694), 4 states have internal predecessors, (694), 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 08:03:16,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:16,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 399 [2023-11-19 08:03:16,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand