./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac1465ca-3199-4559-a88a-9f76dc53d316/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac1465ca-3199-4559-a88a-9f76dc53d316/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac1465ca-3199-4559-a88a-9f76dc53d316/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac1465ca-3199-4559-a88a-9f76dc53d316/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac1465ca-3199-4559-a88a-9f76dc53d316/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac1465ca-3199-4559-a88a-9f76dc53d316/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:33:02,652 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:33:02,723 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac1465ca-3199-4559-a88a-9f76dc53d316/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:33:02,728 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:33:02,729 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:33:02,758 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:33:02,759 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:33:02,760 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:33:02,761 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:33:02,762 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:33:02,763 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:33:02,763 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:33:02,764 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:33:02,765 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:33:02,766 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:33:02,766 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:33:02,767 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:33:02,768 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:33:02,768 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:33:02,769 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:33:02,769 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:33:02,770 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:33:02,771 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:33:02,771 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:33:02,772 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:33:02,772 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:33:02,773 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:33:02,773 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:33:02,774 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:33:02,775 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:33:02,775 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:33:02,776 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:33:02,776 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:33:02,777 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:33:02,777 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:33:02,778 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:33:02,779 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:33:02,779 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:33:02,780 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:33:02,780 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:33:02,781 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:33:02,781 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_ac1465ca-3199-4559-a88a-9f76dc53d316/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac1465ca-3199-4559-a88a-9f76dc53d316/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 [2023-11-06 22:33:03,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:33:03,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:33:03,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:33:03,137 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:33:03,138 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:33:03,139 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac1465ca-3199-4559-a88a-9f76dc53d316/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i [2023-11-06 22:33:06,472 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:33:06,836 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:33:06,837 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac1465ca-3199-4559-a88a-9f76dc53d316/sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i [2023-11-06 22:33:06,855 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac1465ca-3199-4559-a88a-9f76dc53d316/bin/uautomizer-verify-WvqO1wxjHP/data/098357edb/b3b485822042441dbef7e6616dc8cac2/FLAG02f658f7c [2023-11-06 22:33:06,871 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac1465ca-3199-4559-a88a-9f76dc53d316/bin/uautomizer-verify-WvqO1wxjHP/data/098357edb/b3b485822042441dbef7e6616dc8cac2 [2023-11-06 22:33:06,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:33:06,876 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:33:06,878 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:33:06,878 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:33:06,884 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:33:06,885 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:33:06" (1/1) ... [2023-11-06 22:33:06,887 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e52f7ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:06, skipping insertion in model container [2023-11-06 22:33:06,887 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:33:06" (1/1) ... [2023-11-06 22:33:06,935 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:33:07,360 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:33:07,384 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:33:07,469 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:33:07,529 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:33:07,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:07 WrapperNode [2023-11-06 22:33:07,530 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:33:07,531 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:33:07,532 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:33:07,532 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:33:07,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:07" (1/1) ... [2023-11-06 22:33:07,578 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:07" (1/1) ... [2023-11-06 22:33:07,615 INFO L138 Inliner]: procedures = 170, calls = 35, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 160 [2023-11-06 22:33:07,615 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:33:07,616 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:33:07,616 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:33:07,617 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:33:07,629 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:07" (1/1) ... [2023-11-06 22:33:07,629 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:07" (1/1) ... [2023-11-06 22:33:07,633 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:07" (1/1) ... [2023-11-06 22:33:07,633 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:07" (1/1) ... [2023-11-06 22:33:07,641 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:07" (1/1) ... [2023-11-06 22:33:07,647 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:07" (1/1) ... [2023-11-06 22:33:07,650 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:07" (1/1) ... [2023-11-06 22:33:07,652 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:07" (1/1) ... [2023-11-06 22:33:07,656 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:33:07,657 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:33:07,657 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:33:07,658 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:33:07,659 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:07" (1/1) ... [2023-11-06 22:33:07,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:33:07,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac1465ca-3199-4559-a88a-9f76dc53d316/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:07,698 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac1465ca-3199-4559-a88a-9f76dc53d316/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:33:07,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac1465ca-3199-4559-a88a-9f76dc53d316/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:33:07,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:33:07,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:33:07,771 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:33:07,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:33:07,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:33:07,771 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 22:33:07,772 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 22:33:07,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:33:07,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:33:07,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:33:07,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:33:07,774 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:33:07,969 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:33:07,971 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:33:08,314 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:33:08,326 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:33:08,326 INFO L302 CfgBuilder]: Removed 18 assume(true) statements. [2023-11-06 22:33:08,329 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:33:08 BoogieIcfgContainer [2023-11-06 22:33:08,329 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:33:08,332 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:33:08,332 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:33:08,336 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:33:08,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:33:06" (1/3) ... [2023-11-06 22:33:08,337 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@293dbbf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:33:08, skipping insertion in model container [2023-11-06 22:33:08,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:07" (2/3) ... [2023-11-06 22:33:08,338 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@293dbbf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:33:08, skipping insertion in model container [2023-11-06 22:33:08,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:33:08" (3/3) ... [2023-11-06 22:33:08,340 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_60-invariant_racefree.i [2023-11-06 22:33:08,350 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:33:08,362 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:33:08,363 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-06 22:33:08,363 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:33:08,492 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-06 22:33:08,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 176 transitions, 359 flow [2023-11-06 22:33:08,737 INFO L124 PetriNetUnfolderBase]: 36/248 cut-off events. [2023-11-06 22:33:08,737 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:33:08,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 248 events. 36/248 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 925 event pairs, 0 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 140. Up to 6 conditions per place. [2023-11-06 22:33:08,750 INFO L82 GeneralOperation]: Start removeDead. Operand has 155 places, 176 transitions, 359 flow [2023-11-06 22:33:08,768 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 173 transitions, 353 flow [2023-11-06 22:33:08,772 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:33:08,792 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 173 transitions, 353 flow [2023-11-06 22:33:08,795 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 173 transitions, 353 flow [2023-11-06 22:33:08,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 173 transitions, 353 flow [2023-11-06 22:33:08,855 INFO L124 PetriNetUnfolderBase]: 35/245 cut-off events. [2023-11-06 22:33:08,856 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:33:08,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 245 events. 35/245 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 923 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 140. Up to 6 conditions per place. [2023-11-06 22:33:08,867 INFO L119 LiptonReduction]: Number of co-enabled transitions 9676 [2023-11-06 22:33:12,513 INFO L134 LiptonReduction]: Checked pairs total: 22608 [2023-11-06 22:33:12,513 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-11-06 22:33:12,531 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:33:12,539 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=LoopsAndPotentialCycles, 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;@6b698d8f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:33:12,539 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-06 22:33:12,543 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:33:12,544 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-11-06 22:33:12,544 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:33:12,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:12,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:33:12,546 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:33:12,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:12,552 INFO L85 PathProgramCache]: Analyzing trace with hash 21085331, now seen corresponding path program 1 times [2023-11-06 22:33:12,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:12,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432568043] [2023-11-06 22:33:12,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:12,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:12,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:33:12,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:12,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432568043] [2023-11-06 22:33:12,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432568043] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:12,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:12,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:33:12,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133794637] [2023-11-06 22:33:12,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:12,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:33:12,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:12,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:33:12,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:33:12,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-06 22:33:12,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 71 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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) [2023-11-06 22:33:12,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:12,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-06 22:33:12,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:33:13,238 INFO L124 PetriNetUnfolderBase]: 362/845 cut-off events. [2023-11-06 22:33:13,238 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:33:13,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1598 conditions, 845 events. 362/845 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4666 event pairs, 0 based on Foata normal form. 135/763 useless extension candidates. Maximal degree in co-relation 1561. Up to 726 conditions per place. [2023-11-06 22:33:13,251 INFO L140 encePairwiseOnDemand]: 300/323 looper letters, 61 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-11-06 22:33:13,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 71 transitions, 275 flow [2023-11-06 22:33:13,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:33:13,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:33:13,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 524 transitions. [2023-11-06 22:33:13,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5407636738906089 [2023-11-06 22:33:13,280 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 524 transitions. [2023-11-06 22:33:13,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 524 transitions. [2023-11-06 22:33:13,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:13,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 524 transitions. [2023-11-06 22:33:13,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:13,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 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) [2023-11-06 22:33:13,310 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 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) [2023-11-06 22:33:13,312 INFO L175 Difference]: Start difference. First operand has 56 places, 71 transitions, 149 flow. Second operand 3 states and 524 transitions. [2023-11-06 22:33:13,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 71 transitions, 275 flow [2023-11-06 22:33:13,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 71 transitions, 275 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:33:13,324 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 117 flow [2023-11-06 22:33:13,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2023-11-06 22:33:13,332 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2023-11-06 22:33:13,332 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 117 flow [2023-11-06 22:33:13,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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) [2023-11-06 22:33:13,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:13,333 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 22:33:13,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:33:13,334 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:33:13,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:13,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1211784615, now seen corresponding path program 1 times [2023-11-06 22:33:13,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:13,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276566071] [2023-11-06 22:33:13,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:13,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:13,386 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:33:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:13,429 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:33:13,429 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:33:13,431 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-06 22:33:13,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-06 22:33:13,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-06 22:33:13,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-06 22:33:13,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-06 22:33:13,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-06 22:33:13,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-06 22:33:13,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-06 22:33:13,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-11-06 22:33:13,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-11-06 22:33:13,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-11-06 22:33:13,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-06 22:33:13,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-06 22:33:13,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-06 22:33:13,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-06 22:33:13,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-06 22:33:13,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-06 22:33:13,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:33:13,440 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 22:33:13,443 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:33:13,443 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 22:33:13,478 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:33:13,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 237 transitions, 490 flow [2023-11-06 22:33:13,560 INFO L124 PetriNetUnfolderBase]: 62/419 cut-off events. [2023-11-06 22:33:13,561 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:33:13,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 419 events. 62/419 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1729 event pairs, 0 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 250. Up to 9 conditions per place. [2023-11-06 22:33:13,568 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 237 transitions, 490 flow [2023-11-06 22:33:13,574 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 237 transitions, 490 flow [2023-11-06 22:33:13,574 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:33:13,576 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 237 transitions, 490 flow [2023-11-06 22:33:13,577 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 237 transitions, 490 flow [2023-11-06 22:33:13,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 237 transitions, 490 flow [2023-11-06 22:33:13,657 INFO L124 PetriNetUnfolderBase]: 62/419 cut-off events. [2023-11-06 22:33:13,658 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:33:13,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 419 events. 62/419 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1729 event pairs, 0 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 250. Up to 9 conditions per place. [2023-11-06 22:33:13,690 INFO L119 LiptonReduction]: Number of co-enabled transitions 28556 [2023-11-06 22:33:17,876 INFO L134 LiptonReduction]: Checked pairs total: 73961 [2023-11-06 22:33:17,876 INFO L136 LiptonReduction]: Total number of compositions: 195 [2023-11-06 22:33:17,879 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:33:17,881 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=LoopsAndPotentialCycles, 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;@6b698d8f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:33:17,881 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-06 22:33:17,886 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:33:17,886 INFO L124 PetriNetUnfolderBase]: 6/27 cut-off events. [2023-11-06 22:33:17,886 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:33:17,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:17,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:33:17,887 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:33:17,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:17,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1123673652, now seen corresponding path program 1 times [2023-11-06 22:33:17,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:17,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031998613] [2023-11-06 22:33:17,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:17,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:17,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:33:17,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:17,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031998613] [2023-11-06 22:33:17,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031998613] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:17,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:17,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:33:17,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773734742] [2023-11-06 22:33:17,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:17,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:33:17,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:17,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:33:17,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:33:17,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 432 [2023-11-06 22:33:17,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 114 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 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) [2023-11-06 22:33:17,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:17,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 432 [2023-11-06 22:33:17,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:33:21,319 INFO L124 PetriNetUnfolderBase]: 15824/25660 cut-off events. [2023-11-06 22:33:21,320 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-11-06 22:33:21,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49942 conditions, 25660 events. 15824/25660 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 786. Compared 191812 event pairs, 7157 based on Foata normal form. 3067/21461 useless extension candidates. Maximal degree in co-relation 4240. Up to 23156 conditions per place. [2023-11-06 22:33:21,540 INFO L140 encePairwiseOnDemand]: 398/432 looper letters, 103 selfloop transitions, 3 changer transitions 0/120 dead transitions. [2023-11-06 22:33:21,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 120 transitions, 468 flow [2023-11-06 22:33:21,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:33:21,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:33:21,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 732 transitions. [2023-11-06 22:33:21,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5648148148148148 [2023-11-06 22:33:21,544 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 732 transitions. [2023-11-06 22:33:21,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 732 transitions. [2023-11-06 22:33:21,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:21,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 732 transitions. [2023-11-06 22:33:21,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 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) [2023-11-06 22:33:21,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 432.0) internal successors, (1728), 4 states have internal predecessors, (1728), 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) [2023-11-06 22:33:21,556 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 432.0) internal successors, (1728), 4 states have internal predecessors, (1728), 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) [2023-11-06 22:33:21,556 INFO L175 Difference]: Start difference. First operand has 86 places, 114 transitions, 244 flow. Second operand 3 states and 732 transitions. [2023-11-06 22:33:21,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 120 transitions, 468 flow [2023-11-06 22:33:21,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 120 transitions, 468 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:33:21,564 INFO L231 Difference]: Finished difference. Result has 86 places, 83 transitions, 202 flow [2023-11-06 22:33:21,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=86, PETRI_TRANSITIONS=83} [2023-11-06 22:33:21,566 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 0 predicate places. [2023-11-06 22:33:21,566 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 83 transitions, 202 flow [2023-11-06 22:33:21,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 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) [2023-11-06 22:33:21,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:21,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:33:21,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:33:21,568 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:33:21,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:21,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1124238700, now seen corresponding path program 1 times [2023-11-06 22:33:21,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:21,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84551131] [2023-11-06 22:33:21,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:21,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:21,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:33:21,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:21,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84551131] [2023-11-06 22:33:21,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84551131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:21,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:21,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:33:21,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949715678] [2023-11-06 22:33:21,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:21,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:33:21,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:21,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:33:21,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:33:21,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 432 [2023-11-06 22:33:21,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 83 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 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) [2023-11-06 22:33:21,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:21,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 432 [2023-11-06 22:33:21,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:33:24,694 INFO L124 PetriNetUnfolderBase]: 15158/24400 cut-off events. [2023-11-06 22:33:24,695 INFO L125 PetriNetUnfolderBase]: For 1799/1799 co-relation queries the response was YES. [2023-11-06 22:33:24,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48704 conditions, 24400 events. 15158/24400 cut-off events. For 1799/1799 co-relation queries the response was YES. Maximal size of possible extension queue 821. Compared 186394 event pairs, 2176 based on Foata normal form. 341/18369 useless extension candidates. Maximal degree in co-relation 48575. Up to 19502 conditions per place. [2023-11-06 22:33:24,847 INFO L140 encePairwiseOnDemand]: 429/432 looper letters, 101 selfloop transitions, 2 changer transitions 0/117 dead transitions. [2023-11-06 22:33:24,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 117 transitions, 470 flow [2023-11-06 22:33:24,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:33:24,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:33:24,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 679 transitions. [2023-11-06 22:33:24,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5239197530864198 [2023-11-06 22:33:24,851 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 679 transitions. [2023-11-06 22:33:24,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 679 transitions. [2023-11-06 22:33:24,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:24,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 679 transitions. [2023-11-06 22:33:24,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 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) [2023-11-06 22:33:24,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 432.0) internal successors, (1728), 4 states have internal predecessors, (1728), 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) [2023-11-06 22:33:24,860 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 432.0) internal successors, (1728), 4 states have internal predecessors, (1728), 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) [2023-11-06 22:33:24,861 INFO L175 Difference]: Start difference. First operand has 86 places, 83 transitions, 202 flow. Second operand 3 states and 679 transitions. [2023-11-06 22:33:24,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 117 transitions, 470 flow [2023-11-06 22:33:24,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 117 transitions, 466 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:33:24,869 INFO L231 Difference]: Finished difference. Result has 85 places, 81 transitions, 192 flow [2023-11-06 22:33:24,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=85, PETRI_TRANSITIONS=81} [2023-11-06 22:33:24,873 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -1 predicate places. [2023-11-06 22:33:24,873 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 81 transitions, 192 flow [2023-11-06 22:33:24,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 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) [2023-11-06 22:33:24,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:24,874 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:33:24,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:33:24,876 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:33:24,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:24,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1336005496, now seen corresponding path program 1 times [2023-11-06 22:33:24,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:24,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863084682] [2023-11-06 22:33:24,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:24,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:24,982 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:33:24,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:24,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863084682] [2023-11-06 22:33:24,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863084682] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:24,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:24,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:33:24,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369888350] [2023-11-06 22:33:24,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:24,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:33:24,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:24,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:33:24,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:33:25,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 432 [2023-11-06 22:33:25,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 81 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 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) [2023-11-06 22:33:25,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:25,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 432 [2023-11-06 22:33:25,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:33:27,469 INFO L124 PetriNetUnfolderBase]: 14510/23382 cut-off events. [2023-11-06 22:33:27,469 INFO L125 PetriNetUnfolderBase]: For 437/437 co-relation queries the response was YES. [2023-11-06 22:33:27,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46714 conditions, 23382 events. 14510/23382 cut-off events. For 437/437 co-relation queries the response was YES. Maximal size of possible extension queue 811. Compared 177498 event pairs, 935 based on Foata normal form. 0/17520 useless extension candidates. Maximal degree in co-relation 29617. Up to 20510 conditions per place. [2023-11-06 22:33:27,686 INFO L140 encePairwiseOnDemand]: 428/432 looper letters, 99 selfloop transitions, 4 changer transitions 0/117 dead transitions. [2023-11-06 22:33:27,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 117 transitions, 468 flow [2023-11-06 22:33:27,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:33:27,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:33:27,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 676 transitions. [2023-11-06 22:33:27,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216049382716049 [2023-11-06 22:33:27,691 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 676 transitions. [2023-11-06 22:33:27,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 676 transitions. [2023-11-06 22:33:27,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:27,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 676 transitions. [2023-11-06 22:33:27,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 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) [2023-11-06 22:33:27,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 432.0) internal successors, (1728), 4 states have internal predecessors, (1728), 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) [2023-11-06 22:33:27,701 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 432.0) internal successors, (1728), 4 states have internal predecessors, (1728), 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) [2023-11-06 22:33:27,701 INFO L175 Difference]: Start difference. First operand has 85 places, 81 transitions, 192 flow. Second operand 3 states and 676 transitions. [2023-11-06 22:33:27,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 117 transitions, 468 flow [2023-11-06 22:33:27,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 117 transitions, 464 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:33:27,752 INFO L231 Difference]: Finished difference. Result has 85 places, 81 transitions, 200 flow [2023-11-06 22:33:27,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=85, PETRI_TRANSITIONS=81} [2023-11-06 22:33:27,754 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -1 predicate places. [2023-11-06 22:33:27,755 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 81 transitions, 200 flow [2023-11-06 22:33:27,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 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) [2023-11-06 22:33:27,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:27,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:27,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:33:27,756 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:33:27,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:27,757 INFO L85 PathProgramCache]: Analyzing trace with hash 365706544, now seen corresponding path program 1 times [2023-11-06 22:33:27,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:27,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395716177] [2023-11-06 22:33:27,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:27,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:27,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:33:27,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:27,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395716177] [2023-11-06 22:33:27,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395716177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:27,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:27,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:33:27,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040563756] [2023-11-06 22:33:27,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:27,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:33:27,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:27,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:33:27,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:33:27,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 432 [2023-11-06 22:33:27,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 81 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 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) [2023-11-06 22:33:27,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:27,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 432 [2023-11-06 22:33:27,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:33:30,046 INFO L124 PetriNetUnfolderBase]: 13881/23628 cut-off events. [2023-11-06 22:33:30,046 INFO L125 PetriNetUnfolderBase]: For 566/566 co-relation queries the response was YES. [2023-11-06 22:33:30,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46766 conditions, 23628 events. 13881/23628 cut-off events. For 566/566 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 181290 event pairs, 6624 based on Foata normal form. 0/19018 useless extension candidates. Maximal degree in co-relation 30377. Up to 13742 conditions per place. [2023-11-06 22:33:30,192 INFO L140 encePairwiseOnDemand]: 406/432 looper letters, 99 selfloop transitions, 11 changer transitions 0/122 dead transitions. [2023-11-06 22:33:30,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 122 transitions, 508 flow [2023-11-06 22:33:30,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:33:30,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:33:30,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 684 transitions. [2023-11-06 22:33:30,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2023-11-06 22:33:30,198 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 684 transitions. [2023-11-06 22:33:30,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 684 transitions. [2023-11-06 22:33:30,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:30,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 684 transitions. [2023-11-06 22:33:30,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 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) [2023-11-06 22:33:30,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 432.0) internal successors, (1728), 4 states have internal predecessors, (1728), 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) [2023-11-06 22:33:30,209 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 432.0) internal successors, (1728), 4 states have internal predecessors, (1728), 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) [2023-11-06 22:33:30,209 INFO L175 Difference]: Start difference. First operand has 85 places, 81 transitions, 200 flow. Second operand 3 states and 684 transitions. [2023-11-06 22:33:30,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 122 transitions, 508 flow [2023-11-06 22:33:30,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 122 transitions, 504 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:33:30,216 INFO L231 Difference]: Finished difference. Result has 86 places, 88 transitions, 298 flow [2023-11-06 22:33:30,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=86, PETRI_TRANSITIONS=88} [2023-11-06 22:33:30,218 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 0 predicate places. [2023-11-06 22:33:30,218 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 88 transitions, 298 flow [2023-11-06 22:33:30,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 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) [2023-11-06 22:33:30,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:30,219 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-06 22:33:30,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:33:30,220 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:33:30,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:30,221 INFO L85 PathProgramCache]: Analyzing trace with hash -293903031, now seen corresponding path program 1 times [2023-11-06 22:33:30,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:30,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877278718] [2023-11-06 22:33:30,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:30,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:30,242 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:33:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:30,263 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:33:30,263 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:33:30,264 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-11-06 22:33:30,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-11-06 22:33:30,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-11-06 22:33:30,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-11-06 22:33:30,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-11-06 22:33:30,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-11-06 22:33:30,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-11-06 22:33:30,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-11-06 22:33:30,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-11-06 22:33:30,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-11-06 22:33:30,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-11-06 22:33:30,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-11-06 22:33:30,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-11-06 22:33:30,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-11-06 22:33:30,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-11-06 22:33:30,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-11-06 22:33:30,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-11-06 22:33:30,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-11-06 22:33:30,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-11-06 22:33:30,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-11-06 22:33:30,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-11-06 22:33:30,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:33:30,270 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-06 22:33:30,271 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:33:30,272 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-06 22:33:30,313 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:33:30,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 298 transitions, 623 flow [2023-11-06 22:33:30,469 INFO L124 PetriNetUnfolderBase]: 93/633 cut-off events. [2023-11-06 22:33:30,469 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-06 22:33:30,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 633 events. 93/633 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2791 event pairs, 1 based on Foata normal form. 0/488 useless extension candidates. Maximal degree in co-relation 427. Up to 16 conditions per place. [2023-11-06 22:33:30,477 INFO L82 GeneralOperation]: Start removeDead. Operand has 257 places, 298 transitions, 623 flow [2023-11-06 22:33:30,487 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 257 places, 298 transitions, 623 flow [2023-11-06 22:33:30,487 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:33:30,488 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 257 places, 298 transitions, 623 flow [2023-11-06 22:33:30,488 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 257 places, 298 transitions, 623 flow [2023-11-06 22:33:30,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 298 transitions, 623 flow [2023-11-06 22:33:30,641 INFO L124 PetriNetUnfolderBase]: 93/633 cut-off events. [2023-11-06 22:33:30,642 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-06 22:33:30,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 633 events. 93/633 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2791 event pairs, 1 based on Foata normal form. 0/488 useless extension candidates. Maximal degree in co-relation 427. Up to 16 conditions per place. [2023-11-06 22:33:30,692 INFO L119 LiptonReduction]: Number of co-enabled transitions 53808 [2023-11-06 22:33:35,211 INFO L134 LiptonReduction]: Checked pairs total: 145493 [2023-11-06 22:33:35,211 INFO L136 LiptonReduction]: Total number of compositions: 248 [2023-11-06 22:33:35,214 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:33:35,215 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=LoopsAndPotentialCycles, 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;@6b698d8f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:33:35,215 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-06 22:33:35,219 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:33:35,219 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2023-11-06 22:33:35,219 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:33:35,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:35,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:33:35,220 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-06 22:33:35,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:35,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1702438534, now seen corresponding path program 1 times [2023-11-06 22:33:35,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:35,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678978623] [2023-11-06 22:33:35,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:35,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:35,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:33:35,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:35,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678978623] [2023-11-06 22:33:35,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678978623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:35,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:35,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:33:35,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882513775] [2023-11-06 22:33:35,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:35,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:33:35,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:35,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:33:35,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:33:35,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 546 [2023-11-06 22:33:35,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 143 transitions, 313 flow. Second operand has 3 states, 3 states have (on average 241.33333333333334) internal successors, (724), 3 states have internal predecessors, (724), 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) [2023-11-06 22:33:35,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:35,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 546 [2023-11-06 22:33:35,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand