./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_23-idxsense_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b 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_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/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_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_23-idxsense_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/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_614d2935-a21b-4820-ab55-98258e62ed51/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 9205365dcda04af07212d180b1c6367c5de79b6e0d2e09ec11b949fed58626f5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:07:56,349 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:07:56,475 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 23:07:56,483 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:07:56,484 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:07:56,521 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:07:56,522 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:07:56,523 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:07:56,524 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:07:56,529 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:07:56,529 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:07:56,530 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:07:56,530 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:07:56,532 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:07:56,532 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:07:56,533 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:07:56,533 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:07:56,534 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:07:56,534 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:07:56,535 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:07:56,535 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:07:56,536 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:07:56,536 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 23:07:56,536 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:07:56,537 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:07:56,537 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:07:56,538 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:07:56,539 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:07:56,539 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:07:56,539 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:07:56,541 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:07:56,541 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:07:56,541 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:07:56,541 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:07:56,542 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:07:56,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:07:56,542 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:07:56,542 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:07:56,543 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:07:56,543 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:07:56,543 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:07:56,543 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_614d2935-a21b-4820-ab55-98258e62ed51/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9205365dcda04af07212d180b1c6367c5de79b6e0d2e09ec11b949fed58626f5 [2023-11-06 23:07:56,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:07:56,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:07:56,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:07:56,829 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:07:56,829 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:07:56,831 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/06-symbeq_23-idxsense_nr.i [2023-11-06 23:08:00,037 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:08:00,348 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:08:00,349 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/sv-benchmarks/c/goblint-regression/06-symbeq_23-idxsense_nr.i [2023-11-06 23:08:00,381 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/data/6f92b3be3/4e37698af6a644f8853f46d9019e9a02/FLAG6163d030e [2023-11-06 23:08:00,399 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/data/6f92b3be3/4e37698af6a644f8853f46d9019e9a02 [2023-11-06 23:08:00,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:08:00,410 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:08:00,411 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:08:00,412 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:08:00,417 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:08:00,418 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:08:00" (1/1) ... [2023-11-06 23:08:00,419 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6af90096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:00, skipping insertion in model container [2023-11-06 23:08:00,419 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:08:00" (1/1) ... [2023-11-06 23:08:00,464 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:08:00,852 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:08:00,882 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:08:00,953 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:08:01,002 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:08:01,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:01 WrapperNode [2023-11-06 23:08:01,003 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:08:01,004 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:08:01,005 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:08:01,005 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:08:01,013 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:01" (1/1) ... [2023-11-06 23:08:01,041 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:01" (1/1) ... [2023-11-06 23:08:01,071 INFO L138 Inliner]: procedures = 161, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2023-11-06 23:08:01,073 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:08:01,074 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:08:01,075 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:08:01,075 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:08:01,084 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:01" (1/1) ... [2023-11-06 23:08:01,085 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:01" (1/1) ... [2023-11-06 23:08:01,095 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:01" (1/1) ... [2023-11-06 23:08:01,095 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:01" (1/1) ... [2023-11-06 23:08:01,109 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:01" (1/1) ... [2023-11-06 23:08:01,113 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:01" (1/1) ... [2023-11-06 23:08:01,114 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:01" (1/1) ... [2023-11-06 23:08:01,116 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:01" (1/1) ... [2023-11-06 23:08:01,123 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:08:01,124 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:08:01,125 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:08:01,125 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:08:01,126 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:01" (1/1) ... [2023-11-06 23:08:01,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:08:01,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:08:01,159 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:08:01,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:08:01,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:08:01,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:08:01,215 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 23:08:01,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:08:01,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:08:01,216 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 23:08:01,216 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 23:08:01,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:08:01,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:08:01,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:08:01,218 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 23:08:01,406 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:08:01,408 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:08:01,635 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:08:01,643 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:08:01,643 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 23:08:01,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:08:01 BoogieIcfgContainer [2023-11-06 23:08:01,646 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:08:01,649 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:08:01,649 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:08:01,652 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:08:01,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:08:00" (1/3) ... [2023-11-06 23:08:01,653 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270c98d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:08:01, skipping insertion in model container [2023-11-06 23:08:01,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:01" (2/3) ... [2023-11-06 23:08:01,654 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270c98d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:08:01, skipping insertion in model container [2023-11-06 23:08:01,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:08:01" (3/3) ... [2023-11-06 23:08:01,655 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_23-idxsense_nr.i [2023-11-06 23:08:01,671 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:08:01,682 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:08:01,683 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-06 23:08:01,683 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:08:01,750 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 23:08:01,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 76 transitions, 156 flow [2023-11-06 23:08:01,853 INFO L124 PetriNetUnfolderBase]: 2/75 cut-off events. [2023-11-06 23:08:01,853 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:08:01,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 75 events. 2/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2023-11-06 23:08:01,858 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 76 transitions, 156 flow [2023-11-06 23:08:01,862 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 75 transitions, 153 flow [2023-11-06 23:08:01,866 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:08:01,897 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 75 transitions, 153 flow [2023-11-06 23:08:01,907 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 75 transitions, 153 flow [2023-11-06 23:08:01,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 75 transitions, 153 flow [2023-11-06 23:08:01,931 INFO L124 PetriNetUnfolderBase]: 2/75 cut-off events. [2023-11-06 23:08:01,931 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:08:01,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 75 events. 2/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2023-11-06 23:08:01,933 INFO L119 LiptonReduction]: Number of co-enabled transitions 960 [2023-11-06 23:08:03,770 INFO L134 LiptonReduction]: Checked pairs total: 1622 [2023-11-06 23:08:03,770 INFO L136 LiptonReduction]: Total number of compositions: 67 [2023-11-06 23:08:03,786 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:08:03,794 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;@4a06ad8a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:08:03,794 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-06 23:08:03,796 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:08:03,797 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 23:08:03,797 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:08:03,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:03,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 23:08:03,798 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-11-06 23:08:03,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:03,804 INFO L85 PathProgramCache]: Analyzing trace with hash 8761, now seen corresponding path program 1 times [2023-11-06 23:08:03,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:03,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658217510] [2023-11-06 23:08:03,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:03,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:04,130 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 23:08:04,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:04,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658217510] [2023-11-06 23:08:04,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658217510] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:04,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:04,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:08:04,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047593739] [2023-11-06 23:08:04,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:04,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:08:04,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:04,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:08:04,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:08:04,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 143 [2023-11-06 23:08:04,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 51 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 23:08:04,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:04,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 143 [2023-11-06 23:08:04,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:04,346 INFO L124 PetriNetUnfolderBase]: 67/162 cut-off events. [2023-11-06 23:08:04,346 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:08:04,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 162 events. 67/162 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 552 event pairs, 66 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 305. Up to 155 conditions per place. [2023-11-06 23:08:04,352 INFO L140 encePairwiseOnDemand]: 138/143 looper letters, 21 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2023-11-06 23:08:04,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 24 transitions, 97 flow [2023-11-06 23:08:04,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:08:04,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:08:04,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2023-11-06 23:08:04,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2023-11-06 23:08:04,376 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 231 transitions. [2023-11-06 23:08:04,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 231 transitions. [2023-11-06 23:08:04,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:04,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 231 transitions. [2023-11-06 23:08:04,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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 23:08:04,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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 23:08:04,391 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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 23:08:04,393 INFO L175 Difference]: Start difference. First operand has 27 places, 24 transitions, 51 flow. Second operand 3 states and 231 transitions. [2023-11-06 23:08:04,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 24 transitions, 97 flow [2023-11-06 23:08:04,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 24 transitions, 96 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:08:04,398 INFO L231 Difference]: Finished difference. Result has 28 places, 24 transitions, 62 flow [2023-11-06 23:08:04,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=28, PETRI_TRANSITIONS=24} [2023-11-06 23:08:04,404 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-11-06 23:08:04,404 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 24 transitions, 62 flow [2023-11-06 23:08:04,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 23:08:04,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:04,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 23:08:04,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:08:04,406 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-11-06 23:08:04,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:04,406 INFO L85 PathProgramCache]: Analyzing trace with hash 272044, now seen corresponding path program 1 times [2023-11-06 23:08:04,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:04,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790089124] [2023-11-06 23:08:04,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:04,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:04,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:08:04,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:04,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790089124] [2023-11-06 23:08:04,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790089124] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:08:04,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585528025] [2023-11-06 23:08:04,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:04,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:04,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:08:04,492 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:08:04,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:08:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:04,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:08:04,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:08:04,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:08:04,664 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:08:04,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585528025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:04,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:08:04,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-06 23:08:04,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665453108] [2023-11-06 23:08:04,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:04,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:08:04,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:04,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:08:04,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:08:04,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 143 [2023-11-06 23:08:04,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 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 23:08:04,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:04,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 143 [2023-11-06 23:08:04,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:04,776 INFO L124 PetriNetUnfolderBase]: 67/161 cut-off events. [2023-11-06 23:08:04,776 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:08:04,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 161 events. 67/161 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 551 event pairs, 66 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 315. Up to 152 conditions per place. [2023-11-06 23:08:04,778 INFO L140 encePairwiseOnDemand]: 139/143 looper letters, 19 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2023-11-06 23:08:04,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 102 flow [2023-11-06 23:08:04,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:08:04,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:08:04,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 295 transitions. [2023-11-06 23:08:04,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157342657342657 [2023-11-06 23:08:04,783 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 295 transitions. [2023-11-06 23:08:04,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 295 transitions. [2023-11-06 23:08:04,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:04,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 295 transitions. [2023-11-06 23:08:04,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 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 23:08:04,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 23:08:04,799 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 23:08:04,799 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 62 flow. Second operand 4 states and 295 transitions. [2023-11-06 23:08:04,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 102 flow [2023-11-06 23:08:04,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 23 transitions, 98 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 23:08:04,804 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 60 flow [2023-11-06 23:08:04,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=60, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2023-11-06 23:08:04,805 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2023-11-06 23:08:04,805 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 60 flow [2023-11-06 23:08:04,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 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 23:08:04,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:04,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 23:08:04,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:08:05,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:05,027 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-11-06 23:08:05,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:05,028 INFO L85 PathProgramCache]: Analyzing trace with hash -485116915, now seen corresponding path program 1 times [2023-11-06 23:08:05,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:05,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979163464] [2023-11-06 23:08:05,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:05,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:05,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:08:05,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:05,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979163464] [2023-11-06 23:08:05,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979163464] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:08:05,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817673618] [2023-11-06 23:08:05,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:05,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:05,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:08:05,178 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:08:05,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:08:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:05,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:08:05,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:08:05,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:08:05,282 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:08:05,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:08:05,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817673618] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:08:05,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:08:05,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 23:08:05,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076007474] [2023-11-06 23:08:05,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:08:05,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:08:05,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:05,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:08:05,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:08:05,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 143 [2023-11-06 23:08:05,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 60 flow. Second operand has 7 states, 7 states have (on average 68.57142857142857) internal successors, (480), 7 states have internal predecessors, (480), 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 23:08:05,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:05,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 143 [2023-11-06 23:08:05,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:05,429 INFO L124 PetriNetUnfolderBase]: 67/164 cut-off events. [2023-11-06 23:08:05,429 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:08:05,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 164 events. 67/164 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 551 event pairs, 66 based on Foata normal form. 3/115 useless extension candidates. Maximal degree in co-relation 309. Up to 154 conditions per place. [2023-11-06 23:08:05,432 INFO L140 encePairwiseOnDemand]: 140/143 looper letters, 20 selfloop transitions, 5 changer transitions 0/26 dead transitions. [2023-11-06 23:08:05,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 122 flow [2023-11-06 23:08:05,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:08:05,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:08:05,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 430 transitions. [2023-11-06 23:08:05,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011655011655012 [2023-11-06 23:08:05,436 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 430 transitions. [2023-11-06 23:08:05,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 430 transitions. [2023-11-06 23:08:05,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:05,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 430 transitions. [2023-11-06 23:08:05,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 71.66666666666667) internal successors, (430), 6 states have internal predecessors, (430), 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 23:08:05,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 143.0) internal successors, (1001), 7 states have internal predecessors, (1001), 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 23:08:05,442 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 143.0) internal successors, (1001), 7 states have internal predecessors, (1001), 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 23:08:05,442 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 60 flow. Second operand 6 states and 430 transitions. [2023-11-06 23:08:05,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 26 transitions, 122 flow [2023-11-06 23:08:05,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:08:05,444 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 92 flow [2023-11-06 23:08:05,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=92, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-11-06 23:08:05,445 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2023-11-06 23:08:05,445 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 92 flow [2023-11-06 23:08:05,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.57142857142857) internal successors, (480), 7 states have internal predecessors, (480), 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 23:08:05,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:05,446 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-11-06 23:08:05,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:08:05,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-06 23:08:05,652 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-11-06 23:08:05,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:05,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1018841952, now seen corresponding path program 2 times [2023-11-06 23:08:05,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:05,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549207882] [2023-11-06 23:08:05,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:05,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:05,804 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:08:05,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:05,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549207882] [2023-11-06 23:08:05,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549207882] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:08:05,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297134527] [2023-11-06 23:08:05,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:08:05,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:05,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:08:05,807 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:08:05,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:08:05,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 23:08:05,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:08:05,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 23:08:05,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:08:05,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:08:05,953 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 6 [2023-11-06 23:08:06,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:08:06,033 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 10 [2023-11-06 23:08:06,058 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 23:08:06,058 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:08:06,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297134527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:06,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:08:06,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2023-11-06 23:08:06,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149046337] [2023-11-06 23:08:06,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:06,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:08:06,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:06,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:08:06,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:08:06,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 143 [2023-11-06 23:08:06,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 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 23:08:06,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:06,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 143 [2023-11-06 23:08:06,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:06,210 INFO L124 PetriNetUnfolderBase]: 51/130 cut-off events. [2023-11-06 23:08:06,211 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 23:08:06,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 130 events. 51/130 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 423 event pairs, 25 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 249. Up to 106 conditions per place. [2023-11-06 23:08:06,216 INFO L140 encePairwiseOnDemand]: 136/143 looper letters, 28 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2023-11-06 23:08:06,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 32 transitions, 166 flow [2023-11-06 23:08:06,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:08:06,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:08:06,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 235 transitions. [2023-11-06 23:08:06,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5477855477855478 [2023-11-06 23:08:06,220 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 235 transitions. [2023-11-06 23:08:06,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 235 transitions. [2023-11-06 23:08:06,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:06,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 235 transitions. [2023-11-06 23:08:06,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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 23:08:06,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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 23:08:06,223 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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 23:08:06,224 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 92 flow. Second operand 3 states and 235 transitions. [2023-11-06 23:08:06,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 32 transitions, 166 flow [2023-11-06 23:08:06,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 32 transitions, 152 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-06 23:08:06,228 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 103 flow [2023-11-06 23:08:06,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2023-11-06 23:08:06,231 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-11-06 23:08:06,231 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 103 flow [2023-11-06 23:08:06,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 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 23:08:06,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:06,232 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:06,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:08:06,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:06,438 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-11-06 23:08:06,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:06,439 INFO L85 PathProgramCache]: Analyzing trace with hash 213316142, now seen corresponding path program 1 times [2023-11-06 23:08:06,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:06,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168724491] [2023-11-06 23:08:06,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:06,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:06,577 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:08:06,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:06,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168724491] [2023-11-06 23:08:06,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168724491] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:08:06,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925836939] [2023-11-06 23:08:06,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:06,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:06,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:08:06,580 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:08:06,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 23:08:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:06,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:08:06,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:08:06,701 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:08:06,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:08:06,765 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:08:06,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925836939] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:08:06,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:08:06,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 23:08:06,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557826527] [2023-11-06 23:08:06,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:08:06,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 23:08:06,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:06,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 23:08:06,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:08:06,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 143 [2023-11-06 23:08:06,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 103 flow. Second operand has 13 states, 13 states have (on average 68.53846153846153) internal successors, (891), 13 states have internal predecessors, (891), 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 23:08:06,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:06,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 143 [2023-11-06 23:08:06,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:06,925 INFO L124 PetriNetUnfolderBase]: 51/136 cut-off events. [2023-11-06 23:08:06,926 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-11-06 23:08:06,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 136 events. 51/136 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 422 event pairs, 43 based on Foata normal form. 6/117 useless extension candidates. Maximal degree in co-relation 288. Up to 122 conditions per place. [2023-11-06 23:08:06,930 INFO L140 encePairwiseOnDemand]: 140/143 looper letters, 22 selfloop transitions, 11 changer transitions 0/34 dead transitions. [2023-11-06 23:08:06,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 34 transitions, 205 flow [2023-11-06 23:08:06,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:08:06,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 23:08:06,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 841 transitions. [2023-11-06 23:08:06,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49009324009324007 [2023-11-06 23:08:06,935 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 841 transitions. [2023-11-06 23:08:06,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 841 transitions. [2023-11-06 23:08:06,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:06,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 841 transitions. [2023-11-06 23:08:06,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 70.08333333333333) internal successors, (841), 12 states have internal predecessors, (841), 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 23:08:06,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 143.0) internal successors, (1859), 13 states have internal predecessors, (1859), 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 23:08:06,944 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 143.0) internal successors, (1859), 13 states have internal predecessors, (1859), 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 23:08:06,944 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 103 flow. Second operand 12 states and 841 transitions. [2023-11-06 23:08:06,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 34 transitions, 205 flow [2023-11-06 23:08:06,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 34 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:08:06,950 INFO L231 Difference]: Finished difference. Result has 53 places, 34 transitions, 184 flow [2023-11-06 23:08:06,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=184, PETRI_PLACES=53, PETRI_TRANSITIONS=34} [2023-11-06 23:08:06,953 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 26 predicate places. [2023-11-06 23:08:06,953 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 34 transitions, 184 flow [2023-11-06 23:08:06,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 68.53846153846153) internal successors, (891), 13 states have internal predecessors, (891), 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 23:08:06,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:06,954 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:06,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:08:07,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:07,165 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-11-06 23:08:07,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:07,166 INFO L85 PathProgramCache]: Analyzing trace with hash 85388622, now seen corresponding path program 2 times [2023-11-06 23:08:07,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:07,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388811054] [2023-11-06 23:08:07,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:07,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:07,515 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 23:08:07,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:07,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388811054] [2023-11-06 23:08:07,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388811054] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:07,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:07,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:08:07,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060896394] [2023-11-06 23:08:07,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:07,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:08:07,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:07,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:08:07,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:08:07,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 143 [2023-11-06 23:08:07,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 34 transitions, 184 flow. Second operand has 5 states, 5 states have (on average 70.8) internal successors, (354), 5 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:07,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:07,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 143 [2023-11-06 23:08:07,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:07,722 INFO L124 PetriNetUnfolderBase]: 49/130 cut-off events. [2023-11-06 23:08:07,722 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2023-11-06 23:08:07,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 130 events. 49/130 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 386 event pairs, 20 based on Foata normal form. 2/109 useless extension candidates. Maximal degree in co-relation 272. Up to 90 conditions per place. [2023-11-06 23:08:07,723 INFO L140 encePairwiseOnDemand]: 139/143 looper letters, 31 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2023-11-06 23:08:07,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 35 transitions, 250 flow [2023-11-06 23:08:07,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:08:07,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:08:07,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2023-11-06 23:08:07,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5407925407925408 [2023-11-06 23:08:07,725 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 232 transitions. [2023-11-06 23:08:07,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 232 transitions. [2023-11-06 23:08:07,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:07,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 232 transitions. [2023-11-06 23:08:07,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 23:08:07,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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 23:08:07,728 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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 23:08:07,728 INFO L175 Difference]: Start difference. First operand has 53 places, 34 transitions, 184 flow. Second operand 3 states and 232 transitions. [2023-11-06 23:08:07,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 35 transitions, 250 flow [2023-11-06 23:08:07,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 35 transitions, 202 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-11-06 23:08:07,733 INFO L231 Difference]: Finished difference. Result has 48 places, 32 transitions, 134 flow [2023-11-06 23:08:07,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=48, PETRI_TRANSITIONS=32} [2023-11-06 23:08:07,734 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 21 predicate places. [2023-11-06 23:08:07,734 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 32 transitions, 134 flow [2023-11-06 23:08:07,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.8) internal successors, (354), 5 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:08:07,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:07,735 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:07,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 23:08:07,735 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-11-06 23:08:07,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:07,736 INFO L85 PathProgramCache]: Analyzing trace with hash 85396977, now seen corresponding path program 1 times [2023-11-06 23:08:07,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:07,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996208716] [2023-11-06 23:08:07,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:07,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:07,985 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 23:08:07,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:07,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996208716] [2023-11-06 23:08:07,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996208716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:07,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:07,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:08:07,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994898469] [2023-11-06 23:08:07,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:07,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:08:07,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:07,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:08:07,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:08:08,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 143 [2023-11-06 23:08:08,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 32 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 69.8) internal successors, (349), 5 states have internal predecessors, (349), 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 23:08:08,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:08,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 143 [2023-11-06 23:08:08,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:08,168 INFO L124 PetriNetUnfolderBase]: 33/98 cut-off events. [2023-11-06 23:08:08,168 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-06 23:08:08,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 98 events. 33/98 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 221 event pairs, 19 based on Foata normal form. 3/95 useless extension candidates. Maximal degree in co-relation 201. Up to 53 conditions per place. [2023-11-06 23:08:08,170 INFO L140 encePairwiseOnDemand]: 136/143 looper letters, 31 selfloop transitions, 4 changer transitions 4/40 dead transitions. [2023-11-06 23:08:08,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 40 transitions, 230 flow [2023-11-06 23:08:08,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:08:08,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:08:08,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2023-11-06 23:08:08,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5501165501165501 [2023-11-06 23:08:08,171 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2023-11-06 23:08:08,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2023-11-06 23:08:08,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:08,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2023-11-06 23:08:08,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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 23:08:08,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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 23:08:08,174 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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 23:08:08,174 INFO L175 Difference]: Start difference. First operand has 48 places, 32 transitions, 134 flow. Second operand 3 states and 236 transitions. [2023-11-06 23:08:08,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 40 transitions, 230 flow [2023-11-06 23:08:08,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 40 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:08:08,178 INFO L231 Difference]: Finished difference. Result has 49 places, 32 transitions, 148 flow [2023-11-06 23:08:08,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=49, PETRI_TRANSITIONS=32} [2023-11-06 23:08:08,179 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 22 predicate places. [2023-11-06 23:08:08,179 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 32 transitions, 148 flow [2023-11-06 23:08:08,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.8) internal successors, (349), 5 states have internal predecessors, (349), 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 23:08:08,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:08,179 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:08,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 23:08:08,180 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-11-06 23:08:08,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:08,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1924958296, now seen corresponding path program 1 times [2023-11-06 23:08:08,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:08,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407842967] [2023-11-06 23:08:08,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:08,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:08,368 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 23:08:08,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:08,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407842967] [2023-11-06 23:08:08,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407842967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:08,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:08,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:08:08,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341876659] [2023-11-06 23:08:08,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:08,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:08:08,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:08,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:08:08,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:08:08,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 143 [2023-11-06 23:08:08,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 32 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 23:08:08,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:08,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 143 [2023-11-06 23:08:08,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:08,453 INFO L124 PetriNetUnfolderBase]: 28/87 cut-off events. [2023-11-06 23:08:08,453 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2023-11-06 23:08:08,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 87 events. 28/87 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 192 event pairs, 19 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 196. Up to 43 conditions per place. [2023-11-06 23:08:08,454 INFO L140 encePairwiseOnDemand]: 138/143 looper letters, 29 selfloop transitions, 5 changer transitions 1/36 dead transitions. [2023-11-06 23:08:08,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 36 transitions, 224 flow [2023-11-06 23:08:08,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:08:08,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:08:08,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2023-11-06 23:08:08,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5407925407925408 [2023-11-06 23:08:08,456 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 232 transitions. [2023-11-06 23:08:08,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 232 transitions. [2023-11-06 23:08:08,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:08,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 232 transitions. [2023-11-06 23:08:08,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 23:08:08,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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 23:08:08,459 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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 23:08:08,459 INFO L175 Difference]: Start difference. First operand has 49 places, 32 transitions, 148 flow. Second operand 3 states and 232 transitions. [2023-11-06 23:08:08,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 36 transitions, 224 flow [2023-11-06 23:08:08,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 36 transitions, 220 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:08:08,462 INFO L231 Difference]: Finished difference. Result has 49 places, 31 transitions, 150 flow [2023-11-06 23:08:08,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=49, PETRI_TRANSITIONS=31} [2023-11-06 23:08:08,462 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 22 predicate places. [2023-11-06 23:08:08,463 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 31 transitions, 150 flow [2023-11-06 23:08:08,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 23:08:08,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:08,463 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:08,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 23:08:08,463 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-11-06 23:08:08,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:08,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1924958290, now seen corresponding path program 1 times [2023-11-06 23:08:08,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:08,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647268129] [2023-11-06 23:08:08,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:08,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:08,637 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 23:08:08,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:08,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647268129] [2023-11-06 23:08:08,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647268129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:08,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:08,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:08:08,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398908513] [2023-11-06 23:08:08,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:08,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:08:08,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:08,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:08:08,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:08:08,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 143 [2023-11-06 23:08:08,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 31 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 23:08:08,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:08,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 143 [2023-11-06 23:08:08,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:08,711 INFO L124 PetriNetUnfolderBase]: 17/65 cut-off events. [2023-11-06 23:08:08,711 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2023-11-06 23:08:08,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 65 events. 17/65 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 129 event pairs, 2 based on Foata normal form. 6/71 useless extension candidates. Maximal degree in co-relation 146. Up to 37 conditions per place. [2023-11-06 23:08:08,712 INFO L140 encePairwiseOnDemand]: 139/143 looper letters, 32 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2023-11-06 23:08:08,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 36 transitions, 236 flow [2023-11-06 23:08:08,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:08:08,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:08:08,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2023-11-06 23:08:08,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5337995337995338 [2023-11-06 23:08:08,714 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2023-11-06 23:08:08,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2023-11-06 23:08:08,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:08,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2023-11-06 23:08:08,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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 23:08:08,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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 23:08:08,717 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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 23:08:08,717 INFO L175 Difference]: Start difference. First operand has 49 places, 31 transitions, 150 flow. Second operand 3 states and 229 transitions. [2023-11-06 23:08:08,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 36 transitions, 236 flow [2023-11-06 23:08:08,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 36 transitions, 226 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:08:08,720 INFO L231 Difference]: Finished difference. Result has 49 places, 31 transitions, 148 flow [2023-11-06 23:08:08,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=49, PETRI_TRANSITIONS=31} [2023-11-06 23:08:08,720 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 22 predicate places. [2023-11-06 23:08:08,721 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 31 transitions, 148 flow [2023-11-06 23:08:08,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 23:08:08,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:08,721 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:08,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 23:08:08,721 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-11-06 23:08:08,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:08,722 INFO L85 PathProgramCache]: Analyzing trace with hash -300037555, now seen corresponding path program 1 times [2023-11-06 23:08:08,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:08,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580859642] [2023-11-06 23:08:08,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:08,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:09,165 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 23:08:09,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:09,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580859642] [2023-11-06 23:08:09,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580859642] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:09,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:09,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:08:09,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844745292] [2023-11-06 23:08:09,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:09,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:08:09,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:09,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:08:09,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:08:09,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 143 [2023-11-06 23:08:09,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 31 transitions, 148 flow. Second operand has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 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 23:08:09,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:09,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 143 [2023-11-06 23:08:09,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:09,394 INFO L124 PetriNetUnfolderBase]: 17/64 cut-off events. [2023-11-06 23:08:09,394 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2023-11-06 23:08:09,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 64 events. 17/64 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 111 event pairs, 6 based on Foata normal form. 1/64 useless extension candidates. Maximal degree in co-relation 148. Up to 28 conditions per place. [2023-11-06 23:08:09,395 INFO L140 encePairwiseOnDemand]: 137/143 looper letters, 21 selfloop transitions, 3 changer transitions 15/40 dead transitions. [2023-11-06 23:08:09,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 40 transitions, 246 flow [2023-11-06 23:08:09,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:08:09,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 23:08:09,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 364 transitions. [2023-11-06 23:08:09,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509090909090909 [2023-11-06 23:08:09,397 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 364 transitions. [2023-11-06 23:08:09,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 364 transitions. [2023-11-06 23:08:09,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:09,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 364 transitions. [2023-11-06 23:08:09,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 72.8) internal successors, (364), 5 states have internal predecessors, (364), 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 23:08:09,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 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 23:08:09,401 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 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 23:08:09,401 INFO L175 Difference]: Start difference. First operand has 49 places, 31 transitions, 148 flow. Second operand 5 states and 364 transitions. [2023-11-06 23:08:09,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 40 transitions, 246 flow [2023-11-06 23:08:09,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 40 transitions, 241 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:08:09,404 INFO L231 Difference]: Finished difference. Result has 51 places, 25 transitions, 125 flow [2023-11-06 23:08:09,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=125, PETRI_PLACES=51, PETRI_TRANSITIONS=25} [2023-11-06 23:08:09,405 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 24 predicate places. [2023-11-06 23:08:09,405 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 25 transitions, 125 flow [2023-11-06 23:08:09,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 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 23:08:09,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:09,406 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:09,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 23:08:09,406 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-11-06 23:08:09,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:09,406 INFO L85 PathProgramCache]: Analyzing trace with hash 72545256, now seen corresponding path program 1 times [2023-11-06 23:08:09,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:09,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680907219] [2023-11-06 23:08:09,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:09,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:09,541 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 23:08:09,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:09,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680907219] [2023-11-06 23:08:09,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680907219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:09,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:09,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:08:09,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577861988] [2023-11-06 23:08:09,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:09,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:08:09,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:09,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:08:09,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:08:09,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 143 [2023-11-06 23:08:09,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 25 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 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 23:08:09,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:09,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 143 [2023-11-06 23:08:09,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:09,631 INFO L124 PetriNetUnfolderBase]: 5/33 cut-off events. [2023-11-06 23:08:09,631 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-11-06 23:08:09,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 33 events. 5/33 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 4 based on Foata normal form. 1/34 useless extension candidates. Maximal degree in co-relation 82. Up to 16 conditions per place. [2023-11-06 23:08:09,632 INFO L140 encePairwiseOnDemand]: 137/143 looper letters, 18 selfloop transitions, 5 changer transitions 1/25 dead transitions. [2023-11-06 23:08:09,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 25 transitions, 168 flow [2023-11-06 23:08:09,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:08:09,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 23:08:09,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 325 transitions. [2023-11-06 23:08:09,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2023-11-06 23:08:09,634 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 325 transitions. [2023-11-06 23:08:09,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 325 transitions. [2023-11-06 23:08:09,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:09,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 325 transitions. [2023-11-06 23:08:09,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 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 23:08:09,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 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 23:08:09,638 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 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 23:08:09,638 INFO L175 Difference]: Start difference. First operand has 51 places, 25 transitions, 125 flow. Second operand 5 states and 325 transitions. [2023-11-06 23:08:09,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 25 transitions, 168 flow [2023-11-06 23:08:09,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 25 transitions, 156 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-06 23:08:09,640 INFO L231 Difference]: Finished difference. Result has 44 places, 24 transitions, 115 flow [2023-11-06 23:08:09,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=115, PETRI_PLACES=44, PETRI_TRANSITIONS=24} [2023-11-06 23:08:09,641 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-11-06 23:08:09,641 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 24 transitions, 115 flow [2023-11-06 23:08:09,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 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 23:08:09,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:09,641 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:09,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 23:08:09,642 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-11-06 23:08:09,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:09,642 INFO L85 PathProgramCache]: Analyzing trace with hash 72545261, now seen corresponding path program 1 times [2023-11-06 23:08:09,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:09,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925036012] [2023-11-06 23:08:09,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:09,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:10,027 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 23:08:10,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:10,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925036012] [2023-11-06 23:08:10,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925036012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:10,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:10,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:08:10,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369304507] [2023-11-06 23:08:10,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:10,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:08:10,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:10,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:08:10,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:08:10,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 143 [2023-11-06 23:08:10,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 24 transitions, 115 flow. Second operand has 6 states, 6 states have (on average 65.16666666666667) internal successors, (391), 6 states have internal predecessors, (391), 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 23:08:10,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:10,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 143 [2023-11-06 23:08:10,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:10,225 INFO L124 PetriNetUnfolderBase]: 5/32 cut-off events. [2023-11-06 23:08:10,225 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-06 23:08:10,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 32 events. 5/32 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 4 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 64. Up to 27 conditions per place. [2023-11-06 23:08:10,225 INFO L140 encePairwiseOnDemand]: 138/143 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2023-11-06 23:08:10,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 24 transitions, 160 flow [2023-11-06 23:08:10,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:08:10,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:08:10,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 392 transitions. [2023-11-06 23:08:10,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4568764568764569 [2023-11-06 23:08:10,228 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 392 transitions. [2023-11-06 23:08:10,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 392 transitions. [2023-11-06 23:08:10,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:10,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 392 transitions. [2023-11-06 23:08:10,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 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 23:08:10,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 143.0) internal successors, (1001), 7 states have internal predecessors, (1001), 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 23:08:10,232 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 143.0) internal successors, (1001), 7 states have internal predecessors, (1001), 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 23:08:10,232 INFO L175 Difference]: Start difference. First operand has 44 places, 24 transitions, 115 flow. Second operand 6 states and 392 transitions. [2023-11-06 23:08:10,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 24 transitions, 160 flow [2023-11-06 23:08:10,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 24 transitions, 148 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 23:08:10,234 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2023-11-06 23:08:10,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2023-11-06 23:08:10,235 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2023-11-06 23:08:10,235 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2023-11-06 23:08:10,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.16666666666667) internal successors, (391), 6 states have internal predecessors, (391), 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 23:08:10,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 11 remaining) [2023-11-06 23:08:10,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2023-11-06 23:08:10,239 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2023-11-06 23:08:10,239 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2023-11-06 23:08:10,239 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2023-11-06 23:08:10,239 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2023-11-06 23:08:10,239 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 11 remaining) [2023-11-06 23:08:10,239 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2023-11-06 23:08:10,240 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2023-11-06 23:08:10,240 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2023-11-06 23:08:10,240 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2023-11-06 23:08:10,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 23:08:10,240 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:10,246 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 23:08:10,246 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 23:08:10,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:08:10 BasicIcfg [2023-11-06 23:08:10,250 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 23:08:10,250 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 23:08:10,250 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 23:08:10,250 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 23:08:10,251 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:08:01" (3/4) ... [2023-11-06 23:08:10,252 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 23:08:10,256 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-06 23:08:10,261 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-11-06 23:08:10,261 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 23:08:10,261 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 23:08:10,310 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 23:08:10,310 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 23:08:10,310 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 23:08:10,311 INFO L158 Benchmark]: Toolchain (without parser) took 9901.17ms. Allocated memory was 132.1MB in the beginning and 195.0MB in the end (delta: 62.9MB). Free memory was 99.8MB in the beginning and 94.7MB in the end (delta: 5.0MB). Peak memory consumption was 70.0MB. Max. memory is 16.1GB. [2023-11-06 23:08:10,311 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 132.1MB. Free memory was 104.2MB in the beginning and 104.1MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:08:10,312 INFO L158 Benchmark]: CACSL2BoogieTranslator took 592.57ms. Allocated memory is still 132.1MB. Free memory was 99.8MB in the beginning and 80.5MB in the end (delta: 19.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-06 23:08:10,312 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.51ms. Allocated memory is still 132.1MB. Free memory was 80.5MB in the beginning and 78.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:08:10,312 INFO L158 Benchmark]: Boogie Preprocessor took 50.01ms. Allocated memory is still 132.1MB. Free memory was 78.4MB in the beginning and 77.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:08:10,313 INFO L158 Benchmark]: RCFGBuilder took 521.39ms. Allocated memory is still 132.1MB. Free memory was 77.0MB in the beginning and 63.7MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-06 23:08:10,313 INFO L158 Benchmark]: TraceAbstraction took 8600.97ms. Allocated memory was 132.1MB in the beginning and 195.0MB in the end (delta: 62.9MB). Free memory was 62.9MB in the beginning and 97.9MB in the end (delta: -35.0MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. [2023-11-06 23:08:10,314 INFO L158 Benchmark]: Witness Printer took 60.13ms. Allocated memory is still 195.0MB. Free memory was 97.9MB in the beginning and 94.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:08:10,317 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 132.1MB. Free memory was 104.2MB in the beginning and 104.1MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 592.57ms. Allocated memory is still 132.1MB. Free memory was 99.8MB in the beginning and 80.5MB in the end (delta: 19.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.51ms. Allocated memory is still 132.1MB. Free memory was 80.5MB in the beginning and 78.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.01ms. Allocated memory is still 132.1MB. Free memory was 78.4MB in the beginning and 77.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 521.39ms. Allocated memory is still 132.1MB. Free memory was 77.0MB in the beginning and 63.7MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8600.97ms. Allocated memory was 132.1MB in the beginning and 195.0MB in the end (delta: 62.9MB). Free memory was 62.9MB in the beginning and 97.9MB in the end (delta: -35.0MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. * Witness Printer took 60.13ms. Allocated memory is still 195.0MB. Free memory was 97.9MB in the beginning and 94.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 77 PlacesBefore, 27 PlacesAfterwards, 75 TransitionsBefore, 24 TransitionsAfterwards, 960 CoEnabledTransitionPairs, 4 FixpointIterations, 23 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 67 TotalNumberOfCompositions, 1622 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 941, independent: 835, independent conditional: 0, independent unconditional: 835, dependent: 106, dependent conditional: 0, dependent unconditional: 106, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 517, independent: 486, independent conditional: 0, independent unconditional: 486, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 941, independent: 349, independent conditional: 0, independent unconditional: 349, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 517, unknown conditional: 0, unknown unconditional: 517] , Statistics on independence cache: Total cache size (in pairs): 38, Positive cache size: 22, Positive conditional cache size: 0, Positive unconditional cache size: 22, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 693]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 693]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 683]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 683]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 92 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.5s, OverallIterations: 12, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 606 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 336 mSDsluCounter, 199 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 151 mSDsCounter, 100 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1196 IncrementalHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 100 mSolverCounterUnsat, 48 mSDtfsCounter, 1196 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred in iteration=5, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 211 NumberOfCodeBlocks, 207 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 211 ConstructedInterpolants, 0 QuantifiedInterpolants, 1626 SizeOfPredicates, 3 NumberOfNonLiveVariables, 313 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 18 InterpolantComputations, 10 PerfectInterpolantSequences, 396/440 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 23:08:10,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_614d2935-a21b-4820-ab55-98258e62ed51/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE