./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/queue_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 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_76385967-8126-446c-8e66-5adfe7917580/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76385967-8126-446c-8e66-5adfe7917580/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76385967-8126-446c-8e66-5adfe7917580/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76385967-8126-446c-8e66-5adfe7917580/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_ok.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76385967-8126-446c-8e66-5adfe7917580/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76385967-8126-446c-8e66-5adfe7917580/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7cc273f13a619f37768d5108c297b75ab7c37145fe391daced9c134730721251 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:24:40,682 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:24:40,814 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76385967-8126-446c-8e66-5adfe7917580/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:24:40,824 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:24:40,826 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:24:40,889 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:24:40,892 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:24:40,892 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:24:40,894 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:24:40,901 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:24:40,903 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:24:40,903 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:24:40,904 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:24:40,906 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:24:40,907 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:24:40,907 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:24:40,908 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:24:40,908 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:24:40,909 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:24:40,909 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:24:40,910 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:24:40,911 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:24:40,911 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:24:40,913 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:24:40,913 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:24:40,914 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:24:40,914 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:24:40,915 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:24:40,916 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:24:40,917 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:24:40,918 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:24:40,919 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:24:40,919 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:24:40,920 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:24:40,920 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:24:40,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:24:40,921 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:24:40,921 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:24:40,921 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:24:40,921 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:24:40,922 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:24:40,922 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_76385967-8126-446c-8e66-5adfe7917580/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76385967-8126-446c-8e66-5adfe7917580/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cc273f13a619f37768d5108c297b75ab7c37145fe391daced9c134730721251 [2023-11-12 02:24:41,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:24:41,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:24:41,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:24:41,264 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:24:41,265 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:24:41,267 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76385967-8126-446c-8e66-5adfe7917580/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread/queue_ok.i [2023-11-12 02:24:44,523 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:24:44,873 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:24:44,873 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76385967-8126-446c-8e66-5adfe7917580/sv-benchmarks/c/pthread/queue_ok.i [2023-11-12 02:24:44,893 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76385967-8126-446c-8e66-5adfe7917580/bin/uautomizer-verify-uTZkv6EMXl/data/5a6e730b8/a033a5ffbcac4b4fa106e02538512b38/FLAGb32ad16d5 [2023-11-12 02:24:44,909 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76385967-8126-446c-8e66-5adfe7917580/bin/uautomizer-verify-uTZkv6EMXl/data/5a6e730b8/a033a5ffbcac4b4fa106e02538512b38 [2023-11-12 02:24:44,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:24:44,914 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:24:44,916 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:24:44,917 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:24:44,927 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:24:44,928 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:24:44" (1/1) ... [2023-11-12 02:24:44,929 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44856ca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:44, skipping insertion in model container [2023-11-12 02:24:44,929 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:24:44" (1/1) ... [2023-11-12 02:24:45,000 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:24:45,553 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:24:45,571 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:24:45,635 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:24:45,713 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:24:45,714 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:45 WrapperNode [2023-11-12 02:24:45,714 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:24:45,716 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:24:45,716 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:24:45,716 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:24:45,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:45" (1/1) ... [2023-11-12 02:24:45,757 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:45" (1/1) ... [2023-11-12 02:24:45,807 INFO L138 Inliner]: procedures = 274, calls = 59, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 220 [2023-11-12 02:24:45,808 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:24:45,809 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:24:45,809 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:24:45,809 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:24:45,820 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:45" (1/1) ... [2023-11-12 02:24:45,820 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:45" (1/1) ... [2023-11-12 02:24:45,826 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:45" (1/1) ... [2023-11-12 02:24:45,826 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:45" (1/1) ... [2023-11-12 02:24:45,843 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:45" (1/1) ... [2023-11-12 02:24:45,848 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:45" (1/1) ... [2023-11-12 02:24:45,851 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:45" (1/1) ... [2023-11-12 02:24:45,866 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:45" (1/1) ... [2023-11-12 02:24:45,872 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:24:45,873 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:24:45,873 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:24:45,873 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:24:45,874 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:45" (1/1) ... [2023-11-12 02:24:45,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:24:45,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76385967-8126-446c-8e66-5adfe7917580/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:45,917 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76385967-8126-446c-8e66-5adfe7917580/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:24:45,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76385967-8126-446c-8e66-5adfe7917580/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:24:45,959 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-12 02:24:45,960 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-12 02:24:45,960 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-12 02:24:45,960 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-12 02:24:45,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:24:45,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:24:45,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:24:45,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:24:45,961 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 02:24:45,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:24:45,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:24:45,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:24:45,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:24:45,964 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:24:46,153 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:24:46,156 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:24:46,718 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:24:46,731 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:24:46,731 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 02:24:46,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:24:46 BoogieIcfgContainer [2023-11-12 02:24:46,734 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:24:46,738 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:24:46,738 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:24:46,741 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:24:46,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:24:44" (1/3) ... [2023-11-12 02:24:46,742 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596593eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:24:46, skipping insertion in model container [2023-11-12 02:24:46,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:45" (2/3) ... [2023-11-12 02:24:46,743 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596593eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:24:46, skipping insertion in model container [2023-11-12 02:24:46,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:24:46" (3/3) ... [2023-11-12 02:24:46,745 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok.i [2023-11-12 02:24:46,754 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:24:46,766 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:24:46,767 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-12 02:24:46,767 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:24:46,928 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:24:46,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 258 transitions, 530 flow [2023-11-12 02:24:47,113 INFO L124 PetriNetUnfolderBase]: 15/256 cut-off events. [2023-11-12 02:24:47,113 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:24:47,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 256 events. 15/256 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 477 event pairs, 0 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 175. Up to 3 conditions per place. [2023-11-12 02:24:47,123 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 258 transitions, 530 flow [2023-11-12 02:24:47,133 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 238 places, 246 transitions, 501 flow [2023-11-12 02:24:47,138 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:24:47,150 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 238 places, 246 transitions, 501 flow [2023-11-12 02:24:47,153 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 238 places, 246 transitions, 501 flow [2023-11-12 02:24:47,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 238 places, 246 transitions, 501 flow [2023-11-12 02:24:47,267 INFO L124 PetriNetUnfolderBase]: 15/246 cut-off events. [2023-11-12 02:24:47,267 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:24:47,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 246 events. 15/246 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 393 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 175. Up to 3 conditions per place. [2023-11-12 02:24:47,286 INFO L119 LiptonReduction]: Number of co-enabled transitions 15300 [2023-11-12 02:24:55,694 INFO L134 LiptonReduction]: Checked pairs total: 32311 [2023-11-12 02:24:55,695 INFO L136 LiptonReduction]: Total number of compositions: 241 [2023-11-12 02:24:55,711 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:24:55,718 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@328c6257, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:24:55,718 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-11-12 02:24:55,723 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:24:55,724 INFO L124 PetriNetUnfolderBase]: 1/17 cut-off events. [2023-11-12 02:24:55,724 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:24:55,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:55,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:55,725 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:24:55,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:55,730 INFO L85 PathProgramCache]: Analyzing trace with hash 665727335, now seen corresponding path program 1 times [2023-11-12 02:24:55,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:55,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252775322] [2023-11-12 02:24:55,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:55,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:56,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:56,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:56,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252775322] [2023-11-12 02:24:56,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252775322] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:56,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:56,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:24:56,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132261470] [2023-11-12 02:24:56,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:56,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:24:56,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:56,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:24:56,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:24:57,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 499 [2023-11-12 02:24:57,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 58 transitions, 125 flow. Second operand has 5 states, 5 states have (on average 230.4) internal successors, (1152), 5 states have internal predecessors, (1152), 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) [2023-11-12 02:24:57,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:57,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 499 [2023-11-12 02:24:57,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:57,599 INFO L124 PetriNetUnfolderBase]: 1510/2487 cut-off events. [2023-11-12 02:24:57,599 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2023-11-12 02:24:57,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4982 conditions, 2487 events. 1510/2487 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 12471 event pairs, 1101 based on Foata normal form. 0/1781 useless extension candidates. Maximal degree in co-relation 4762. Up to 2421 conditions per place. [2023-11-12 02:24:57,625 INFO L140 encePairwiseOnDemand]: 491/499 looper letters, 54 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2023-11-12 02:24:57,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 70 transitions, 275 flow [2023-11-12 02:24:57,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:24:57,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:24:57,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1439 transitions. [2023-11-12 02:24:57,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48062792251169006 [2023-11-12 02:24:57,655 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1439 transitions. [2023-11-12 02:24:57,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1439 transitions. [2023-11-12 02:24:57,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:57,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1439 transitions. [2023-11-12 02:24:57,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 239.83333333333334) internal successors, (1439), 6 states have internal predecessors, (1439), 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) [2023-11-12 02:24:57,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 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) [2023-11-12 02:24:57,685 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 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) [2023-11-12 02:24:57,688 INFO L175 Difference]: Start difference. First operand has 58 places, 58 transitions, 125 flow. Second operand 6 states and 1439 transitions. [2023-11-12 02:24:57,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 70 transitions, 275 flow [2023-11-12 02:24:57,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 70 transitions, 270 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:24:57,696 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 180 flow [2023-11-12 02:24:57,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=180, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2023-11-12 02:24:57,702 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2023-11-12 02:24:57,702 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 180 flow [2023-11-12 02:24:57,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 230.4) internal successors, (1152), 5 states have internal predecessors, (1152), 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) [2023-11-12 02:24:57,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:57,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:57,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:24:57,704 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:24:57,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:57,705 INFO L85 PathProgramCache]: Analyzing trace with hash -837658795, now seen corresponding path program 1 times [2023-11-12 02:24:57,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:57,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543418581] [2023-11-12 02:24:57,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:57,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:58,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:58,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:58,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543418581] [2023-11-12 02:24:58,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543418581] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:58,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:58,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:24:58,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551699503] [2023-11-12 02:24:58,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:58,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:24:58,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:58,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:24:58,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:24:58,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 499 [2023-11-12 02:24:58,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 180 flow. Second operand has 6 states, 6 states have (on average 226.33333333333334) internal successors, (1358), 6 states have internal predecessors, (1358), 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) [2023-11-12 02:24:58,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:58,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 499 [2023-11-12 02:24:58,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:59,340 INFO L124 PetriNetUnfolderBase]: 1996/3328 cut-off events. [2023-11-12 02:24:59,340 INFO L125 PetriNetUnfolderBase]: For 161/161 co-relation queries the response was YES. [2023-11-12 02:24:59,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7044 conditions, 3328 events. 1996/3328 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 18275 event pairs, 376 based on Foata normal form. 0/2570 useless extension candidates. Maximal degree in co-relation 5965. Up to 2493 conditions per place. [2023-11-12 02:24:59,372 INFO L140 encePairwiseOnDemand]: 490/499 looper letters, 121 selfloop transitions, 17 changer transitions 0/145 dead transitions. [2023-11-12 02:24:59,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 145 transitions, 633 flow [2023-11-12 02:24:59,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:24:59,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:24:59,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1486 transitions. [2023-11-12 02:24:59,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49632598530394123 [2023-11-12 02:24:59,380 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1486 transitions. [2023-11-12 02:24:59,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1486 transitions. [2023-11-12 02:24:59,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:59,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1486 transitions. [2023-11-12 02:24:59,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 247.66666666666666) internal successors, (1486), 6 states have internal predecessors, (1486), 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) [2023-11-12 02:24:59,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 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) [2023-11-12 02:24:59,397 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 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) [2023-11-12 02:24:59,397 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 180 flow. Second operand 6 states and 1486 transitions. [2023-11-12 02:24:59,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 145 transitions, 633 flow [2023-11-12 02:24:59,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 145 transitions, 633 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:24:59,411 INFO L231 Difference]: Finished difference. Result has 72 places, 75 transitions, 274 flow [2023-11-12 02:24:59,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=274, PETRI_PLACES=72, PETRI_TRANSITIONS=75} [2023-11-12 02:24:59,412 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2023-11-12 02:24:59,413 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 75 transitions, 274 flow [2023-11-12 02:24:59,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 226.33333333333334) internal successors, (1358), 6 states have internal predecessors, (1358), 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) [2023-11-12 02:24:59,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:59,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:59,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:24:59,422 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:24:59,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:59,424 INFO L85 PathProgramCache]: Analyzing trace with hash -836966875, now seen corresponding path program 2 times [2023-11-12 02:24:59,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:59,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864702865] [2023-11-12 02:24:59,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:59,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:59,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:59,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:59,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864702865] [2023-11-12 02:24:59,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864702865] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:59,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:59,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:24:59,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354748929] [2023-11-12 02:24:59,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:59,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:24:59,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:59,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:24:59,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:25:00,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 499 [2023-11-12 02:25:00,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 75 transitions, 274 flow. Second operand has 6 states, 6 states have (on average 227.33333333333334) internal successors, (1364), 6 states have internal predecessors, (1364), 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) [2023-11-12 02:25:00,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:00,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 499 [2023-11-12 02:25:00,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:00,991 INFO L124 PetriNetUnfolderBase]: 2136/3567 cut-off events. [2023-11-12 02:25:00,991 INFO L125 PetriNetUnfolderBase]: For 798/798 co-relation queries the response was YES. [2023-11-12 02:25:01,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8326 conditions, 3567 events. 2136/3567 cut-off events. For 798/798 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 19783 event pairs, 402 based on Foata normal form. 0/2776 useless extension candidates. Maximal degree in co-relation 7236. Up to 2526 conditions per place. [2023-11-12 02:25:01,028 INFO L140 encePairwiseOnDemand]: 491/499 looper letters, 110 selfloop transitions, 19 changer transitions 0/136 dead transitions. [2023-11-12 02:25:01,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 136 transitions, 682 flow [2023-11-12 02:25:01,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:25:01,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:25:01,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1248 transitions. [2023-11-12 02:25:01,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5002004008016032 [2023-11-12 02:25:01,034 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1248 transitions. [2023-11-12 02:25:01,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1248 transitions. [2023-11-12 02:25:01,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:01,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1248 transitions. [2023-11-12 02:25:01,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 249.6) internal successors, (1248), 5 states have internal predecessors, (1248), 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) [2023-11-12 02:25:01,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 499.0) internal successors, (2994), 6 states have internal predecessors, (2994), 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) [2023-11-12 02:25:01,049 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 499.0) internal successors, (2994), 6 states have internal predecessors, (2994), 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) [2023-11-12 02:25:01,049 INFO L175 Difference]: Start difference. First operand has 72 places, 75 transitions, 274 flow. Second operand 5 states and 1248 transitions. [2023-11-12 02:25:01,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 136 transitions, 682 flow [2023-11-12 02:25:01,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 136 transitions, 662 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-11-12 02:25:01,066 INFO L231 Difference]: Finished difference. Result has 77 places, 82 transitions, 346 flow [2023-11-12 02:25:01,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=346, PETRI_PLACES=77, PETRI_TRANSITIONS=82} [2023-11-12 02:25:01,068 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 19 predicate places. [2023-11-12 02:25:01,068 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 82 transitions, 346 flow [2023-11-12 02:25:01,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 227.33333333333334) internal successors, (1364), 6 states have internal predecessors, (1364), 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) [2023-11-12 02:25:01,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:01,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:01,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:25:01,070 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:25:01,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:01,071 INFO L85 PathProgramCache]: Analyzing trace with hash 548683948, now seen corresponding path program 1 times [2023-11-12 02:25:01,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:01,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798126441] [2023-11-12 02:25:01,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:01,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:01,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:01,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:01,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798126441] [2023-11-12 02:25:01,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798126441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:01,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:01,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:25:01,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944878175] [2023-11-12 02:25:01,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:01,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:25:01,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:01,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:25:01,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:25:01,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 499 [2023-11-12 02:25:01,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 82 transitions, 346 flow. Second operand has 4 states, 4 states have (on average 239.25) internal successors, (957), 4 states have internal predecessors, (957), 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) [2023-11-12 02:25:01,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:01,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 499 [2023-11-12 02:25:01,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:02,064 INFO L124 PetriNetUnfolderBase]: 3509/5806 cut-off events. [2023-11-12 02:25:02,064 INFO L125 PetriNetUnfolderBase]: For 2393/2433 co-relation queries the response was YES. [2023-11-12 02:25:02,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13652 conditions, 5806 events. 3509/5806 cut-off events. For 2393/2433 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 35443 event pairs, 1596 based on Foata normal form. 40/4443 useless extension candidates. Maximal degree in co-relation 12124. Up to 3407 conditions per place. [2023-11-12 02:25:02,125 INFO L140 encePairwiseOnDemand]: 492/499 looper letters, 151 selfloop transitions, 4 changer transitions 0/165 dead transitions. [2023-11-12 02:25:02,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 165 transitions, 978 flow [2023-11-12 02:25:02,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:25:02,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:25:02,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1065 transitions. [2023-11-12 02:25:02,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5335671342685371 [2023-11-12 02:25:02,130 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1065 transitions. [2023-11-12 02:25:02,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1065 transitions. [2023-11-12 02:25:02,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:02,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1065 transitions. [2023-11-12 02:25:02,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 266.25) internal successors, (1065), 4 states have internal predecessors, (1065), 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) [2023-11-12 02:25:02,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 499.0) internal successors, (2495), 5 states have internal predecessors, (2495), 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) [2023-11-12 02:25:02,141 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 499.0) internal successors, (2495), 5 states have internal predecessors, (2495), 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) [2023-11-12 02:25:02,141 INFO L175 Difference]: Start difference. First operand has 77 places, 82 transitions, 346 flow. Second operand 4 states and 1065 transitions. [2023-11-12 02:25:02,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 165 transitions, 978 flow [2023-11-12 02:25:02,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 165 transitions, 948 flow, removed 15 selfloop flow, removed 0 redundant places. [2023-11-12 02:25:02,153 INFO L231 Difference]: Finished difference. Result has 82 places, 85 transitions, 368 flow [2023-11-12 02:25:02,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=368, PETRI_PLACES=82, PETRI_TRANSITIONS=85} [2023-11-12 02:25:02,154 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 24 predicate places. [2023-11-12 02:25:02,155 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 85 transitions, 368 flow [2023-11-12 02:25:02,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 239.25) internal successors, (957), 4 states have internal predecessors, (957), 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) [2023-11-12 02:25:02,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:02,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:02,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:25:02,156 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:25:02,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:02,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1474196742, now seen corresponding path program 1 times [2023-11-12 02:25:02,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:02,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924688008] [2023-11-12 02:25:02,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:02,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:02,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:02,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:02,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:02,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924688008] [2023-11-12 02:25:02,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924688008] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:02,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:02,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:25:02,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412742643] [2023-11-12 02:25:02,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:02,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:25:02,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:02,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:25:02,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:25:02,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 499 [2023-11-12 02:25:02,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 85 transitions, 368 flow. Second operand has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 states have internal predecessors, (1155), 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) [2023-11-12 02:25:02,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:02,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 499 [2023-11-12 02:25:02,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:03,663 INFO L124 PetriNetUnfolderBase]: 3550/5946 cut-off events. [2023-11-12 02:25:03,664 INFO L125 PetriNetUnfolderBase]: For 2536/2548 co-relation queries the response was YES. [2023-11-12 02:25:03,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14421 conditions, 5946 events. 3550/5946 cut-off events. For 2536/2548 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 36335 event pairs, 2444 based on Foata normal form. 0/4798 useless extension candidates. Maximal degree in co-relation 10046. Up to 5706 conditions per place. [2023-11-12 02:25:03,721 INFO L140 encePairwiseOnDemand]: 490/499 looper letters, 76 selfloop transitions, 10 changer transitions 0/93 dead transitions. [2023-11-12 02:25:03,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 93 transitions, 558 flow [2023-11-12 02:25:03,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:25:03,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:25:03,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1443 transitions. [2023-11-12 02:25:03,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4819639278557114 [2023-11-12 02:25:03,728 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1443 transitions. [2023-11-12 02:25:03,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1443 transitions. [2023-11-12 02:25:03,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:03,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1443 transitions. [2023-11-12 02:25:03,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 240.5) internal successors, (1443), 6 states have internal predecessors, (1443), 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) [2023-11-12 02:25:03,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 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) [2023-11-12 02:25:03,744 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 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) [2023-11-12 02:25:03,744 INFO L175 Difference]: Start difference. First operand has 82 places, 85 transitions, 368 flow. Second operand 6 states and 1443 transitions. [2023-11-12 02:25:03,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 93 transitions, 558 flow [2023-11-12 02:25:03,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 93 transitions, 556 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:25:03,759 INFO L231 Difference]: Finished difference. Result has 87 places, 87 transitions, 406 flow [2023-11-12 02:25:03,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=406, PETRI_PLACES=87, PETRI_TRANSITIONS=87} [2023-11-12 02:25:03,762 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 29 predicate places. [2023-11-12 02:25:03,762 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 87 transitions, 406 flow [2023-11-12 02:25:03,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 states have internal predecessors, (1155), 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) [2023-11-12 02:25:03,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:03,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:03,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:25:03,766 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:25:03,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:03,767 INFO L85 PathProgramCache]: Analyzing trace with hash -931432907, now seen corresponding path program 1 times [2023-11-12 02:25:03,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:03,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9560349] [2023-11-12 02:25:03,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:03,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:03,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:04,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:04,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:04,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9560349] [2023-11-12 02:25:04,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9560349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:04,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:04,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:25:04,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904823695] [2023-11-12 02:25:04,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:04,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:25:04,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:04,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:25:04,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:25:04,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 499 [2023-11-12 02:25:04,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 87 transitions, 406 flow. Second operand has 6 states, 6 states have (on average 225.83333333333334) internal successors, (1355), 6 states have internal predecessors, (1355), 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) [2023-11-12 02:25:04,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:04,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 499 [2023-11-12 02:25:04,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:05,716 INFO L124 PetriNetUnfolderBase]: 3833/6332 cut-off events. [2023-11-12 02:25:05,717 INFO L125 PetriNetUnfolderBase]: For 1882/1926 co-relation queries the response was YES. [2023-11-12 02:25:05,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15626 conditions, 6332 events. 3833/6332 cut-off events. For 1882/1926 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 38547 event pairs, 610 based on Foata normal form. 94/5417 useless extension candidates. Maximal degree in co-relation 12222. Up to 4662 conditions per place. [2023-11-12 02:25:05,777 INFO L140 encePairwiseOnDemand]: 489/499 looper letters, 142 selfloop transitions, 20 changer transitions 0/169 dead transitions. [2023-11-12 02:25:05,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 169 transitions, 973 flow [2023-11-12 02:25:05,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:25:05,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:25:05,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1484 transitions. [2023-11-12 02:25:05,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4956579826319305 [2023-11-12 02:25:05,787 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1484 transitions. [2023-11-12 02:25:05,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1484 transitions. [2023-11-12 02:25:05,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:05,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1484 transitions. [2023-11-12 02:25:05,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 247.33333333333334) internal successors, (1484), 6 states have internal predecessors, (1484), 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) [2023-11-12 02:25:05,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 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) [2023-11-12 02:25:05,802 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 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) [2023-11-12 02:25:05,802 INFO L175 Difference]: Start difference. First operand has 87 places, 87 transitions, 406 flow. Second operand 6 states and 1484 transitions. [2023-11-12 02:25:05,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 169 transitions, 973 flow [2023-11-12 02:25:05,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 169 transitions, 957 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:25:05,843 INFO L231 Difference]: Finished difference. Result has 89 places, 89 transitions, 458 flow [2023-11-12 02:25:05,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=458, PETRI_PLACES=89, PETRI_TRANSITIONS=89} [2023-11-12 02:25:05,847 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 31 predicate places. [2023-11-12 02:25:05,847 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 89 transitions, 458 flow [2023-11-12 02:25:05,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 225.83333333333334) internal successors, (1355), 6 states have internal predecessors, (1355), 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) [2023-11-12 02:25:05,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:05,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:05,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:25:05,849 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:25:05,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:05,849 INFO L85 PathProgramCache]: Analyzing trace with hash -995547143, now seen corresponding path program 1 times [2023-11-12 02:25:05,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:05,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143124117] [2023-11-12 02:25:05,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:05,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:05,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:05,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:05,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143124117] [2023-11-12 02:25:05,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143124117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:05,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:05,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:25:05,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562325714] [2023-11-12 02:25:05,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:05,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:25:05,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:05,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:25:05,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:25:05,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 499 [2023-11-12 02:25:05,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 89 transitions, 458 flow. Second operand has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 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) [2023-11-12 02:25:05,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:05,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 499 [2023-11-12 02:25:05,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:06,208 INFO L124 PetriNetUnfolderBase]: 704/1391 cut-off events. [2023-11-12 02:25:06,209 INFO L125 PetriNetUnfolderBase]: For 576/576 co-relation queries the response was YES. [2023-11-12 02:25:06,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3415 conditions, 1391 events. 704/1391 cut-off events. For 576/576 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 7820 event pairs, 441 based on Foata normal form. 58/1291 useless extension candidates. Maximal degree in co-relation 3023. Up to 785 conditions per place. [2023-11-12 02:25:06,220 INFO L140 encePairwiseOnDemand]: 495/499 looper letters, 73 selfloop transitions, 2 changer transitions 6/90 dead transitions. [2023-11-12 02:25:06,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 90 transitions, 579 flow [2023-11-12 02:25:06,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:25:06,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:25:06,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 780 transitions. [2023-11-12 02:25:06,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210420841683366 [2023-11-12 02:25:06,225 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 780 transitions. [2023-11-12 02:25:06,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 780 transitions. [2023-11-12 02:25:06,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:06,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 780 transitions. [2023-11-12 02:25:06,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 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) [2023-11-12 02:25:06,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 499.0) internal successors, (1996), 4 states have internal predecessors, (1996), 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) [2023-11-12 02:25:06,236 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 499.0) internal successors, (1996), 4 states have internal predecessors, (1996), 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) [2023-11-12 02:25:06,236 INFO L175 Difference]: Start difference. First operand has 89 places, 89 transitions, 458 flow. Second operand 3 states and 780 transitions. [2023-11-12 02:25:06,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 90 transitions, 579 flow [2023-11-12 02:25:06,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 90 transitions, 553 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-12 02:25:06,244 INFO L231 Difference]: Finished difference. Result has 88 places, 79 transitions, 367 flow [2023-11-12 02:25:06,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=367, PETRI_PLACES=88, PETRI_TRANSITIONS=79} [2023-11-12 02:25:06,247 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 30 predicate places. [2023-11-12 02:25:06,247 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 79 transitions, 367 flow [2023-11-12 02:25:06,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 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) [2023-11-12 02:25:06,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:06,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:06,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:25:06,248 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:25:06,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:06,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1793280644, now seen corresponding path program 1 times [2023-11-12 02:25:06,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:06,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167288848] [2023-11-12 02:25:06,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:06,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:06,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:06,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:06,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167288848] [2023-11-12 02:25:06,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167288848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:06,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:06,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:25:06,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349381786] [2023-11-12 02:25:06,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:06,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:25:06,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:06,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:25:06,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:25:07,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 499 [2023-11-12 02:25:07,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 79 transitions, 367 flow. Second operand has 6 states, 6 states have (on average 227.83333333333334) internal successors, (1367), 6 states have internal predecessors, (1367), 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) [2023-11-12 02:25:07,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:07,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 499 [2023-11-12 02:25:07,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:07,606 INFO L124 PetriNetUnfolderBase]: 710/1404 cut-off events. [2023-11-12 02:25:07,607 INFO L125 PetriNetUnfolderBase]: For 449/449 co-relation queries the response was YES. [2023-11-12 02:25:07,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3452 conditions, 1404 events. 710/1404 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 7843 event pairs, 411 based on Foata normal form. 14/1261 useless extension candidates. Maximal degree in co-relation 2497. Up to 804 conditions per place. [2023-11-12 02:25:07,620 INFO L140 encePairwiseOnDemand]: 489/499 looper letters, 94 selfloop transitions, 15 changer transitions 0/115 dead transitions. [2023-11-12 02:25:07,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 115 transitions, 686 flow [2023-11-12 02:25:07,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:25:07,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:25:07,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1452 transitions. [2023-11-12 02:25:07,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849699398797595 [2023-11-12 02:25:07,627 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1452 transitions. [2023-11-12 02:25:07,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1452 transitions. [2023-11-12 02:25:07,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:07,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1452 transitions. [2023-11-12 02:25:07,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 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) [2023-11-12 02:25:07,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 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) [2023-11-12 02:25:07,642 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 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) [2023-11-12 02:25:07,642 INFO L175 Difference]: Start difference. First operand has 88 places, 79 transitions, 367 flow. Second operand 6 states and 1452 transitions. [2023-11-12 02:25:07,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 115 transitions, 686 flow [2023-11-12 02:25:07,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 115 transitions, 682 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:25:07,650 INFO L231 Difference]: Finished difference. Result has 91 places, 80 transitions, 415 flow [2023-11-12 02:25:07,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=415, PETRI_PLACES=91, PETRI_TRANSITIONS=80} [2023-11-12 02:25:07,653 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 33 predicate places. [2023-11-12 02:25:07,653 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 80 transitions, 415 flow [2023-11-12 02:25:07,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 227.83333333333334) internal successors, (1367), 6 states have internal predecessors, (1367), 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) [2023-11-12 02:25:07,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:07,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:07,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:25:07,655 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:25:07,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:07,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1544542564, now seen corresponding path program 2 times [2023-11-12 02:25:07,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:07,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887610782] [2023-11-12 02:25:07,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:07,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:08,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:08,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:08,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887610782] [2023-11-12 02:25:08,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887610782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:08,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:08,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:25:08,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359979959] [2023-11-12 02:25:08,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:08,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:25:08,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:08,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:25:08,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:25:08,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 499 [2023-11-12 02:25:08,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 80 transitions, 415 flow. Second operand has 6 states, 6 states have (on average 226.83333333333334) internal successors, (1361), 6 states have internal predecessors, (1361), 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) [2023-11-12 02:25:08,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:08,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 499 [2023-11-12 02:25:08,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:08,730 INFO L124 PetriNetUnfolderBase]: 734/1445 cut-off events. [2023-11-12 02:25:08,730 INFO L125 PetriNetUnfolderBase]: For 738/738 co-relation queries the response was YES. [2023-11-12 02:25:08,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3670 conditions, 1445 events. 734/1445 cut-off events. For 738/738 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 8082 event pairs, 231 based on Foata normal form. 14/1306 useless extension candidates. Maximal degree in co-relation 2943. Up to 792 conditions per place. [2023-11-12 02:25:08,742 INFO L140 encePairwiseOnDemand]: 490/499 looper letters, 96 selfloop transitions, 14 changer transitions 0/116 dead transitions. [2023-11-12 02:25:08,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 116 transitions, 738 flow [2023-11-12 02:25:08,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:25:08,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:25:08,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1446 transitions. [2023-11-12 02:25:08,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48296593186372744 [2023-11-12 02:25:08,748 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1446 transitions. [2023-11-12 02:25:08,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1446 transitions. [2023-11-12 02:25:08,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:08,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1446 transitions. [2023-11-12 02:25:08,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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) [2023-11-12 02:25:08,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 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) [2023-11-12 02:25:08,761 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 499.0) internal successors, (3493), 7 states have internal predecessors, (3493), 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) [2023-11-12 02:25:08,762 INFO L175 Difference]: Start difference. First operand has 91 places, 80 transitions, 415 flow. Second operand 6 states and 1446 transitions. [2023-11-12 02:25:08,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 116 transitions, 738 flow [2023-11-12 02:25:08,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 116 transitions, 716 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-12 02:25:08,769 INFO L231 Difference]: Finished difference. Result has 95 places, 81 transitions, 444 flow [2023-11-12 02:25:08,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=444, PETRI_PLACES=95, PETRI_TRANSITIONS=81} [2023-11-12 02:25:08,770 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 37 predicate places. [2023-11-12 02:25:08,770 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 81 transitions, 444 flow [2023-11-12 02:25:08,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 226.83333333333334) internal successors, (1361), 6 states have internal predecessors, (1361), 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) [2023-11-12 02:25:08,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:08,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:08,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:25:08,772 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:25:08,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:08,772 INFO L85 PathProgramCache]: Analyzing trace with hash 635992631, now seen corresponding path program 1 times [2023-11-12 02:25:08,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:08,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43048283] [2023-11-12 02:25:08,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:08,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:08,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:08,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:08,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43048283] [2023-11-12 02:25:08,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43048283] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:08,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:08,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:25:08,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875900283] [2023-11-12 02:25:08,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:08,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:25:08,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:08,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:25:08,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:25:08,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 499 [2023-11-12 02:25:08,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 81 transitions, 444 flow. Second operand has 3 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 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) [2023-11-12 02:25:08,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:08,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 499 [2023-11-12 02:25:08,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:09,067 INFO L124 PetriNetUnfolderBase]: 564/1115 cut-off events. [2023-11-12 02:25:09,067 INFO L125 PetriNetUnfolderBase]: For 720/720 co-relation queries the response was YES. [2023-11-12 02:25:09,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2923 conditions, 1115 events. 564/1115 cut-off events. For 720/720 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5572 event pairs, 426 based on Foata normal form. 8/997 useless extension candidates. Maximal degree in co-relation 2320. Up to 804 conditions per place. [2023-11-12 02:25:09,077 INFO L140 encePairwiseOnDemand]: 494/499 looper letters, 77 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2023-11-12 02:25:09,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 89 transitions, 619 flow [2023-11-12 02:25:09,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:25:09,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:25:09,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 787 transitions. [2023-11-12 02:25:09,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257181028724115 [2023-11-12 02:25:09,081 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 787 transitions. [2023-11-12 02:25:09,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 787 transitions. [2023-11-12 02:25:09,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:09,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 787 transitions. [2023-11-12 02:25:09,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 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) [2023-11-12 02:25:09,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 499.0) internal successors, (1996), 4 states have internal predecessors, (1996), 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) [2023-11-12 02:25:09,088 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 499.0) internal successors, (1996), 4 states have internal predecessors, (1996), 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) [2023-11-12 02:25:09,088 INFO L175 Difference]: Start difference. First operand has 95 places, 81 transitions, 444 flow. Second operand 3 states and 787 transitions. [2023-11-12 02:25:09,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 89 transitions, 619 flow [2023-11-12 02:25:09,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 89 transitions, 588 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-12 02:25:09,096 INFO L231 Difference]: Finished difference. Result has 94 places, 81 transitions, 419 flow [2023-11-12 02:25:09,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=419, PETRI_PLACES=94, PETRI_TRANSITIONS=81} [2023-11-12 02:25:09,099 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 36 predicate places. [2023-11-12 02:25:09,099 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 81 transitions, 419 flow [2023-11-12 02:25:09,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 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) [2023-11-12 02:25:09,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:09,100 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:09,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:25:09,100 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:25:09,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:09,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1757219408, now seen corresponding path program 1 times [2023-11-12 02:25:09,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:09,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417709661] [2023-11-12 02:25:09,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:09,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:09,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:09,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:09,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:09,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417709661] [2023-11-12 02:25:09,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417709661] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:25:09,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10817225] [2023-11-12 02:25:09,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:09,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:09,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76385967-8126-446c-8e66-5adfe7917580/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:09,707 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76385967-8126-446c-8e66-5adfe7917580/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:25:09,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76385967-8126-446c-8e66-5adfe7917580/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:25:09,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:09,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-12 02:25:09,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:10,122 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-12 02:25:10,201 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 25 treesize of output 13 [2023-11-12 02:25:10,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:25:10,240 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 18 treesize of output 13 [2023-11-12 02:25:10,360 INFO L322 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2023-11-12 02:25:10,360 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 17 [2023-11-12 02:25:10,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:10,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:25:10,738 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:25:10,738 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 46 [2023-11-12 02:25:10,751 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:25:10,752 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 60 [2023-11-12 02:25:10,762 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-11-12 02:25:10,788 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2023-11-12 02:25:10,799 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:25:10,799 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2023-11-12 02:25:10,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:10,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10817225] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:25:10,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:25:10,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2023-11-12 02:25:10,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024531325] [2023-11-12 02:25:10,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:25:10,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-12 02:25:10,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:10,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-12 02:25:10,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=515, Unknown=4, NotChecked=0, Total=650 [2023-11-12 02:25:14,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 02:25:15,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 499 [2023-11-12 02:25:15,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 81 transitions, 419 flow. Second operand has 26 states, 26 states have (on average 190.73076923076923) internal successors, (4959), 26 states have internal predecessors, (4959), 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) [2023-11-12 02:25:15,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:15,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 499 [2023-11-12 02:25:15,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:16,508 INFO L124 PetriNetUnfolderBase]: 1063/2079 cut-off events. [2023-11-12 02:25:16,508 INFO L125 PetriNetUnfolderBase]: For 772/772 co-relation queries the response was YES. [2023-11-12 02:25:16,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5156 conditions, 2079 events. 1063/2079 cut-off events. For 772/772 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 12364 event pairs, 362 based on Foata normal form. 0/1843 useless extension candidates. Maximal degree in co-relation 3994. Up to 665 conditions per place. [2023-11-12 02:25:16,527 INFO L140 encePairwiseOnDemand]: 487/499 looper letters, 121 selfloop transitions, 44 changer transitions 0/171 dead transitions. [2023-11-12 02:25:16,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 171 transitions, 1048 flow [2023-11-12 02:25:16,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:25:16,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-12 02:25:16,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2214 transitions. [2023-11-12 02:25:16,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40335215886318093 [2023-11-12 02:25:16,536 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2214 transitions. [2023-11-12 02:25:16,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2214 transitions. [2023-11-12 02:25:16,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:16,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2214 transitions. [2023-11-12 02:25:16,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 201.27272727272728) internal successors, (2214), 11 states have internal predecessors, (2214), 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) [2023-11-12 02:25:16,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 499.0) internal successors, (5988), 12 states have internal predecessors, (5988), 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) [2023-11-12 02:25:16,555 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 499.0) internal successors, (5988), 12 states have internal predecessors, (5988), 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) [2023-11-12 02:25:16,555 INFO L175 Difference]: Start difference. First operand has 94 places, 81 transitions, 419 flow. Second operand 11 states and 2214 transitions. [2023-11-12 02:25:16,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 171 transitions, 1048 flow [2023-11-12 02:25:16,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 171 transitions, 1044 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:25:16,564 INFO L231 Difference]: Finished difference. Result has 105 places, 99 transitions, 623 flow [2023-11-12 02:25:16,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=499, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=623, PETRI_PLACES=105, PETRI_TRANSITIONS=99} [2023-11-12 02:25:16,565 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 47 predicate places. [2023-11-12 02:25:16,565 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 99 transitions, 623 flow [2023-11-12 02:25:16,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 190.73076923076923) internal successors, (4959), 26 states have internal predecessors, (4959), 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) [2023-11-12 02:25:16,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:16,567 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:16,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76385967-8126-446c-8e66-5adfe7917580/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:25:16,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76385967-8126-446c-8e66-5adfe7917580/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-12 02:25:16,782 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2023-11-12 02:25:16,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:16,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1757219439, now seen corresponding path program 1 times [2023-11-12 02:25:16,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:16,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353011518] [2023-11-12 02:25:16,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:16,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:17,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:17,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:17,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353011518] [2023-11-12 02:25:17,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353011518] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:25:17,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597866719] [2023-11-12 02:25:17,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:17,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:17,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76385967-8126-446c-8e66-5adfe7917580/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:17,603 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76385967-8126-446c-8e66-5adfe7917580/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:25:17,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76385967-8126-446c-8e66-5adfe7917580/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:25:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:17,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-12 02:25:17,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:17,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:25:17,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:25:17,794 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 15 [2023-11-12 02:25:17,815 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-12 02:25:17,816 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-12 02:25:17,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:25:17,827 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-12 02:25:17,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:25:17,837 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 21 treesize of output 15 [2023-11-12 02:25:18,010 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 44 [2023-11-12 02:25:18,193 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 55 [2023-11-12 02:25:18,464 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 106 [2023-11-12 02:25:18,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:25:18,599 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 240 treesize of output 199 [2023-11-12 02:25:18,835 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 258 treesize of output 215 [2023-11-12 02:25:19,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:19,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:25:19,534 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_t1Thread1of1ForFork0_enqueue_#t~mem40#1_58| Int)) (let ((.cse1 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|)) (.cse2 (+ 84 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|))) (or (forall ((v_ArrVal_310 Int) (v_ArrVal_309 (Array Int Int)) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_49| Int)) (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store .cse1 .cse2 (+ |v_t1Thread1of1ForFork0_enqueue_#t~mem40#1_58| 1))) |c_~#stored_elements~0.base| v_ArrVal_309) |c_~#queue~0.base|))) (or (< (select (store .cse0 (+ (* 4 |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_49|) |c_~#queue~0.offset|) v_ArrVal_310) (+ 88 |c_~#queue~0.offset|)) 2147483647) (< (select .cse0 (+ 84 |c_~#queue~0.offset|)) |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_49|)))) (< (select .cse1 .cse2) |v_t1Thread1of1ForFork0_enqueue_#t~mem40#1_58|)))) is different from false [2023-11-12 02:25:19,709 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_310 Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem40#1_58| Int) (|v_t1Thread1of1ForFork0_enqueue_#t~post38#1_70| Int) (v_ArrVal_309 (Array Int Int)) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_49| Int)) (let ((.cse1 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|)) (.cse2 (+ 88 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|)) (.cse3 (+ 84 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|))) (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (store .cse1 .cse2 (+ |v_t1Thread1of1ForFork0_enqueue_#t~post38#1_70| 1)) .cse3 (+ |v_t1Thread1of1ForFork0_enqueue_#t~mem40#1_58| 1))) |c_~#stored_elements~0.base| v_ArrVal_309) |c_~#queue~0.base|))) (or (< (select (store .cse0 (+ (* 4 |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_49|) |c_~#queue~0.offset|) v_ArrVal_310) (+ 88 |c_~#queue~0.offset|)) 2147483647) (< (select .cse1 .cse2) |v_t1Thread1of1ForFork0_enqueue_#t~post38#1_70|) (< (select .cse1 .cse3) |v_t1Thread1of1ForFork0_enqueue_#t~mem40#1_58|) (< (select .cse0 (+ 84 |c_~#queue~0.offset|)) |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_49|))))) is different from false [2023-11-12 02:25:20,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-12 02:25:20,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597866719] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:25:20,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:25:20,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2023-11-12 02:25:20,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990167776] [2023-11-12 02:25:20,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:25:20,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-12 02:25:20,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:20,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-12 02:25:20,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=675, Unknown=17, NotChecked=114, Total=992 [2023-11-12 02:25:21,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 499 [2023-11-12 02:25:21,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 99 transitions, 623 flow. Second operand has 32 states, 32 states have (on average 189.40625) internal successors, (6061), 32 states have internal predecessors, (6061), 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) [2023-11-12 02:25:21,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:21,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 499 [2023-11-12 02:25:21,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:25,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-12 02:25:27,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-12 02:25:29,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1]