./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_5c36dc8d-1d7a-4efc-9ba5-2a00a0cfdddf/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c36dc8d-1d7a-4efc-9ba5-2a00a0cfdddf/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c36dc8d-1d7a-4efc-9ba5-2a00a0cfdddf/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c36dc8d-1d7a-4efc-9ba5-2a00a0cfdddf/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c36dc8d-1d7a-4efc-9ba5-2a00a0cfdddf/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c36dc8d-1d7a-4efc-9ba5-2a00a0cfdddf/bin/uautomizer-verify-BQ2R08f2Ya --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 f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:59:58,964 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:59:59,030 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c36dc8d-1d7a-4efc-9ba5-2a00a0cfdddf/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-28 23:59:59,035 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:59:59,036 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:59:59,061 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:59:59,061 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:59:59,062 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:59:59,063 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 23:59:59,063 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 23:59:59,064 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:59:59,064 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:59:59,065 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:59:59,066 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:59:59,066 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:59:59,067 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:59:59,067 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:59:59,068 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:59:59,068 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:59:59,069 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:59:59,070 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:59:59,070 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:59:59,071 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:59:59,071 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:59:59,072 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-28 23:59:59,072 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 23:59:59,073 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:59:59,073 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:59:59,074 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:59:59,074 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:59:59,075 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:59:59,075 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 23:59:59,075 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:59:59,076 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:59:59,076 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:59:59,076 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:59:59,076 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:59:59,077 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:59:59,077 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:59:59,077 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:59:59,077 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:59:59,078 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:59:59,078 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:59:59,078 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:59:59,078 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_5c36dc8d-1d7a-4efc-9ba5-2a00a0cfdddf/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c36dc8d-1d7a-4efc-9ba5-2a00a0cfdddf/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 [2023-11-28 23:59:59,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:59:59,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:59:59,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:59:59,321 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:59:59,321 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:59:59,322 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c36dc8d-1d7a-4efc-9ba5-2a00a0cfdddf/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2023-11-29 00:00:02,066 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:00:02,287 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:00:02,288 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c36dc8d-1d7a-4efc-9ba5-2a00a0cfdddf/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2023-11-29 00:00:02,302 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c36dc8d-1d7a-4efc-9ba5-2a00a0cfdddf/bin/uautomizer-verify-BQ2R08f2Ya/data/099893928/1656c371fed84f99b34477263c8d77f1/FLAG30de32b8c [2023-11-29 00:00:02,314 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c36dc8d-1d7a-4efc-9ba5-2a00a0cfdddf/bin/uautomizer-verify-BQ2R08f2Ya/data/099893928/1656c371fed84f99b34477263c8d77f1 [2023-11-29 00:00:02,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:00:02,317 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:00:02,318 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:00:02,318 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:00:02,324 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:00:02,324 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:00:02" (1/1) ... [2023-11-29 00:00:02,325 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4699d1ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:02, skipping insertion in model container [2023-11-29 00:00:02,326 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:00:02" (1/1) ... [2023-11-29 00:00:02,377 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:00:02,663 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:00:02,674 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:00:02,715 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:00:02,779 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:00:02,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:02 WrapperNode [2023-11-29 00:00:02,779 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:00:02,780 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:00:02,780 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:00:02,781 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:00:02,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:02" (1/1) ... [2023-11-29 00:00:02,800 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:02" (1/1) ... [2023-11-29 00:00:02,819 INFO L138 Inliner]: procedures = 167, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 77 [2023-11-29 00:00:02,820 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:00:02,820 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:00:02,821 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:00:02,821 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:00:02,829 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:02" (1/1) ... [2023-11-29 00:00:02,829 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:02" (1/1) ... [2023-11-29 00:00:02,832 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:02" (1/1) ... [2023-11-29 00:00:02,847 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [2, 1]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2023-11-29 00:00:02,847 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:02" (1/1) ... [2023-11-29 00:00:02,848 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:02" (1/1) ... [2023-11-29 00:00:02,852 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:02" (1/1) ... [2023-11-29 00:00:02,856 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:02" (1/1) ... [2023-11-29 00:00:02,857 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:02" (1/1) ... [2023-11-29 00:00:02,859 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:02" (1/1) ... [2023-11-29 00:00:02,862 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:00:02,863 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:00:02,863 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:00:02,863 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:00:02,864 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:02" (1/1) ... [2023-11-29 00:00:02,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:00:02,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c36dc8d-1d7a-4efc-9ba5-2a00a0cfdddf/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:00:02,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c36dc8d-1d7a-4efc-9ba5-2a00a0cfdddf/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:00:02,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c36dc8d-1d7a-4efc-9ba5-2a00a0cfdddf/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:00:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-29 00:00:02,922 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-29 00:00:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 00:00:02,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 00:00:02,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:00:02,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 00:00:02,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:00:02,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:00:02,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 00:00:02,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:00:02,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:00:02,925 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 00:00:03,041 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:00:03,043 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:00:03,194 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:00:03,272 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:00:03,272 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 00:00:03,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:00:03 BoogieIcfgContainer [2023-11-29 00:00:03,273 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:00:03,275 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:00:03,275 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:00:03,278 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:00:03,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:00:02" (1/3) ... [2023-11-29 00:00:03,279 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fec9e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:00:03, skipping insertion in model container [2023-11-29 00:00:03,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:00:02" (2/3) ... [2023-11-29 00:00:03,280 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fec9e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:00:03, skipping insertion in model container [2023-11-29 00:00:03,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:00:03" (3/3) ... [2023-11-29 00:00:03,281 INFO L112 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2023-11-29 00:00:03,288 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 00:00:03,295 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:00:03,296 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-29 00:00:03,296 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 00:00:03,345 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 00:00:03,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 35 transitions, 74 flow [2023-11-29 00:00:03,393 INFO L124 PetriNetUnfolderBase]: 5/37 cut-off events. [2023-11-29 00:00:03,393 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:00:03,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 37 events. 5/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 76 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2023-11-29 00:00:03,395 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 35 transitions, 74 flow [2023-11-29 00:00:03,399 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 35 transitions, 74 flow [2023-11-29 00:00:03,408 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:00:03,416 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;@52809f3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:00:03,416 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-29 00:00:03,421 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:00:03,422 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-11-29 00:00:03,422 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:00:03,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:00:03,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 00:00:03,423 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 00:00:03,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:00:03,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1496091715, now seen corresponding path program 1 times [2023-11-29 00:00:03,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:00:03,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925098061] [2023-11-29 00:00:03,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:00:03,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:00:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:00:03,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:00:03,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:00:03,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925098061] [2023-11-29 00:00:03,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925098061] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:00:03,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:00:03,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:00:03,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926522518] [2023-11-29 00:00:03,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:00:03,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:00:03,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:00:03,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:00:03,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:00:03,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2023-11-29 00:00:03,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 35 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2023-11-29 00:00:03,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:00:03,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2023-11-29 00:00:03,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:00:03,819 INFO L124 PetriNetUnfolderBase]: 57/201 cut-off events. [2023-11-29 00:00:03,829 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:00:03,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 201 events. 57/201 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 883 event pairs, 20 based on Foata normal form. 9/174 useless extension candidates. Maximal degree in co-relation 300. Up to 65 conditions per place. [2023-11-29 00:00:03,834 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 27 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-11-29 00:00:03,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 45 transitions, 152 flow [2023-11-29 00:00:03,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:00:03,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:00:03,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2023-11-29 00:00:03,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7904761904761904 [2023-11-29 00:00:03,845 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 83 transitions. [2023-11-29 00:00:03,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 83 transitions. [2023-11-29 00:00:03,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:00:03,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 83 transitions. [2023-11-29 00:00:03,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2023-11-29 00:00:03,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2023-11-29 00:00:03,853 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2023-11-29 00:00:03,855 INFO L175 Difference]: Start difference. First operand has 33 places, 35 transitions, 74 flow. Second operand 3 states and 83 transitions. [2023-11-29 00:00:03,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 45 transitions, 152 flow [2023-11-29 00:00:03,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 152 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:00:03,860 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 84 flow [2023-11-29 00:00:03,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2023-11-29 00:00:03,865 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2023-11-29 00:00:03,865 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 84 flow [2023-11-29 00:00:03,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2023-11-29 00:00:03,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:00:03,866 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 00:00:03,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:00:03,867 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 00:00:03,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:00:03,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1496117264, now seen corresponding path program 1 times [2023-11-29 00:00:03,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:00:03,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150260769] [2023-11-29 00:00:03,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:00:03,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:00:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:00:03,893 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 00:00:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:00:03,920 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 00:00:03,920 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 00:00:03,921 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-29 00:00:03,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-29 00:00:03,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-29 00:00:03,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-29 00:00:03,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-29 00:00:03,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-29 00:00:03,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-29 00:00:03,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-29 00:00:03,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-11-29 00:00:03,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-11-29 00:00:03,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-11-29 00:00:03,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-29 00:00:03,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-29 00:00:03,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-29 00:00:03,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-29 00:00:03,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-29 00:00:03,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-29 00:00:03,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:00:03,926 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 00:00:03,929 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 00:00:03,929 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-29 00:00:03,973 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 00:00:03,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 65 transitions, 140 flow [2023-11-29 00:00:03,990 INFO L124 PetriNetUnfolderBase]: 10/70 cut-off events. [2023-11-29 00:00:03,990 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 00:00:03,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 70 events. 10/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 225 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 61. Up to 3 conditions per place. [2023-11-29 00:00:03,992 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 65 transitions, 140 flow [2023-11-29 00:00:03,994 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 65 transitions, 140 flow [2023-11-29 00:00:03,995 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:00:03,997 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;@52809f3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:00:03,997 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-29 00:00:04,000 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:00:04,000 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-11-29 00:00:04,000 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 00:00:04,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:00:04,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 00:00:04,001 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-29 00:00:04,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:00:04,001 INFO L85 PathProgramCache]: Analyzing trace with hash 427725661, now seen corresponding path program 1 times [2023-11-29 00:00:04,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:00:04,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853887936] [2023-11-29 00:00:04,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:00:04,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:00:04,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:00:04,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:00:04,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:00:04,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853887936] [2023-11-29 00:00:04,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853887936] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:00:04,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:00:04,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:00:04,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237328492] [2023-11-29 00:00:04,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:00:04,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:00:04,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:00:04,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:00:04,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:00:04,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 65 [2023-11-29 00:00:04,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 65 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2023-11-29 00:00:04,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:00:04,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 65 [2023-11-29 00:00:04,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:00:04,501 INFO L124 PetriNetUnfolderBase]: 1201/2849 cut-off events. [2023-11-29 00:00:04,501 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-11-29 00:00:04,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4631 conditions, 2849 events. 1201/2849 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 22055 event pairs, 520 based on Foata normal form. 174/2526 useless extension candidates. Maximal degree in co-relation 3450. Up to 988 conditions per place. [2023-11-29 00:00:04,532 INFO L140 encePairwiseOnDemand]: 58/65 looper letters, 51 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-11-29 00:00:04,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 86 transitions, 293 flow [2023-11-29 00:00:04,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:00:04,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:00:04,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 160 transitions. [2023-11-29 00:00:04,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8205128205128205 [2023-11-29 00:00:04,534 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 160 transitions. [2023-11-29 00:00:04,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 160 transitions. [2023-11-29 00:00:04,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:00:04,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 160 transitions. [2023-11-29 00:00:04,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2023-11-29 00:00:04,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 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) [2023-11-29 00:00:04,538 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 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) [2023-11-29 00:00:04,538 INFO L175 Difference]: Start difference. First operand has 60 places, 65 transitions, 140 flow. Second operand 3 states and 160 transitions. [2023-11-29 00:00:04,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 86 transitions, 293 flow [2023-11-29 00:00:04,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 86 transitions, 293 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:00:04,542 INFO L231 Difference]: Finished difference. Result has 62 places, 63 transitions, 148 flow [2023-11-29 00:00:04,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=62, PETRI_TRANSITIONS=63} [2023-11-29 00:00:04,543 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 2 predicate places. [2023-11-29 00:00:04,543 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 63 transitions, 148 flow [2023-11-29 00:00:04,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2023-11-29 00:00:04,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:00:04,544 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2023-11-29 00:00:04,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:00:04,544 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-29 00:00:04,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:00:04,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1884326269, now seen corresponding path program 1 times [2023-11-29 00:00:04,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:00:04,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880150260] [2023-11-29 00:00:04,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:00:04,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:00:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:00:04,562 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 00:00:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:00:04,577 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 00:00:04,577 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 00:00:04,577 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-11-29 00:00:04,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2023-11-29 00:00:04,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2023-11-29 00:00:04,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2023-11-29 00:00:04,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2023-11-29 00:00:04,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2023-11-29 00:00:04,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2023-11-29 00:00:04,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2023-11-29 00:00:04,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2023-11-29 00:00:04,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2023-11-29 00:00:04,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2023-11-29 00:00:04,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2023-11-29 00:00:04,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2023-11-29 00:00:04,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2023-11-29 00:00:04,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2023-11-29 00:00:04,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2023-11-29 00:00:04,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2023-11-29 00:00:04,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2023-11-29 00:00:04,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2023-11-29 00:00:04,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2023-11-29 00:00:04,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2023-11-29 00:00:04,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2023-11-29 00:00:04,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2023-11-29 00:00:04,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2023-11-29 00:00:04,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2023-11-29 00:00:04,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:00:04,592 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 00:00:04,593 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 00:00:04,593 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-29 00:00:04,649 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 00:00:04,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 95 transitions, 208 flow [2023-11-29 00:00:04,669 INFO L124 PetriNetUnfolderBase]: 15/103 cut-off events. [2023-11-29 00:00:04,669 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-29 00:00:04,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 103 events. 15/103 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 397 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2023-11-29 00:00:04,670 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 95 transitions, 208 flow [2023-11-29 00:00:04,673 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 95 transitions, 208 flow [2023-11-29 00:00:04,674 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:00:04,675 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;@52809f3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:00:04,676 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-11-29 00:00:04,678 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:00:04,679 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-11-29 00:00:04,679 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 00:00:04,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:00:04,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 00:00:04,679 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 00:00:04,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:00:04,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1055949376, now seen corresponding path program 1 times [2023-11-29 00:00:04,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:00:04,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215709696] [2023-11-29 00:00:04,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:00:04,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:00:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:00:04,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:00:04,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:00:04,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215709696] [2023-11-29 00:00:04,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215709696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:00:04,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:00:04,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:00:04,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121767672] [2023-11-29 00:00:04,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:00:04,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:00:04,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:00:04,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:00:04,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:00:04,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 95 [2023-11-29 00:00:04,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 95 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2023-11-29 00:00:04,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:00:04,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 95 [2023-11-29 00:00:04,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:00:07,888 INFO L124 PetriNetUnfolderBase]: 17164/33006 cut-off events. [2023-11-29 00:00:07,888 INFO L125 PetriNetUnfolderBase]: For 1133/1133 co-relation queries the response was YES. [2023-11-29 00:00:07,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55597 conditions, 33006 events. 17164/33006 cut-off events. For 1133/1133 co-relation queries the response was YES. Maximal size of possible extension queue 1468. Compared 325698 event pairs, 6856 based on Foata normal form. 2572/30093 useless extension candidates. Maximal degree in co-relation 13335. Up to 12562 conditions per place. [2023-11-29 00:00:08,228 INFO L140 encePairwiseOnDemand]: 87/95 looper letters, 75 selfloop transitions, 2 changer transitions 0/127 dead transitions. [2023-11-29 00:00:08,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 127 transitions, 438 flow [2023-11-29 00:00:08,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:00:08,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:00:08,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2023-11-29 00:00:08,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8315789473684211 [2023-11-29 00:00:08,232 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2023-11-29 00:00:08,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2023-11-29 00:00:08,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:00:08,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2023-11-29 00:00:08,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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) [2023-11-29 00:00:08,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2023-11-29 00:00:08,238 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2023-11-29 00:00:08,238 INFO L175 Difference]: Start difference. First operand has 87 places, 95 transitions, 208 flow. Second operand 3 states and 237 transitions. [2023-11-29 00:00:08,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 127 transitions, 438 flow [2023-11-29 00:00:08,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 127 transitions, 434 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-29 00:00:08,245 INFO L231 Difference]: Finished difference. Result has 89 places, 92 transitions, 212 flow [2023-11-29 00:00:08,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=89, PETRI_TRANSITIONS=92} [2023-11-29 00:00:08,246 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 2 predicate places. [2023-11-29 00:00:08,246 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 92 transitions, 212 flow [2023-11-29 00:00:08,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2023-11-29 00:00:08,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:00:08,247 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:00:08,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:00:08,248 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 00:00:08,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:00:08,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1230783526, now seen corresponding path program 1 times [2023-11-29 00:00:08,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:00:08,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451970824] [2023-11-29 00:00:08,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:00:08,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:00:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:00:08,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:00:08,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:00:08,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451970824] [2023-11-29 00:00:08,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451970824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:00:08,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:00:08,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:00:08,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017760516] [2023-11-29 00:00:08,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:00:08,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:00:08,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:00:08,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:00:08,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:00:08,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 95 [2023-11-29 00:00:08,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 92 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2023-11-29 00:00:08,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:00:08,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 95 [2023-11-29 00:00:08,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:00:12,533 INFO L124 PetriNetUnfolderBase]: 32455/60993 cut-off events. [2023-11-29 00:00:12,533 INFO L125 PetriNetUnfolderBase]: For 4096/4096 co-relation queries the response was YES. [2023-11-29 00:00:12,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105609 conditions, 60993 events. 32455/60993 cut-off events. For 4096/4096 co-relation queries the response was YES. Maximal size of possible extension queue 2427. Compared 621229 event pairs, 14152 based on Foata normal form. 510/51685 useless extension candidates. Maximal degree in co-relation 81540. Up to 23776 conditions per place. [2023-11-29 00:00:12,906 INFO L140 encePairwiseOnDemand]: 91/95 looper letters, 76 selfloop transitions, 2 changer transitions 0/128 dead transitions. [2023-11-29 00:00:12,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 128 transitions, 453 flow [2023-11-29 00:00:12,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:00:12,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:00:12,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 228 transitions. [2023-11-29 00:00:12,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8 [2023-11-29 00:00:12,909 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 228 transitions. [2023-11-29 00:00:12,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 228 transitions. [2023-11-29 00:00:12,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:00:12,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 228 transitions. [2023-11-29 00:00:12,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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) [2023-11-29 00:00:12,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2023-11-29 00:00:12,915 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2023-11-29 00:00:12,915 INFO L175 Difference]: Start difference. First operand has 89 places, 92 transitions, 212 flow. Second operand 3 states and 228 transitions. [2023-11-29 00:00:12,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 128 transitions, 453 flow [2023-11-29 00:00:12,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 128 transitions, 449 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:00:12,924 INFO L231 Difference]: Finished difference. Result has 91 places, 93 transitions, 224 flow [2023-11-29 00:00:12,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=91, PETRI_TRANSITIONS=93} [2023-11-29 00:00:12,925 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 4 predicate places. [2023-11-29 00:00:12,926 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 93 transitions, 224 flow [2023-11-29 00:00:12,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2023-11-29 00:00:12,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:00:12,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:00:12,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:00:12,927 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 00:00:12,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:00:12,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1446940509, now seen corresponding path program 1 times [2023-11-29 00:00:12,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:00:12,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185305745] [2023-11-29 00:00:12,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:00:12,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:00:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:00:12,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:00:12,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:00:12,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185305745] [2023-11-29 00:00:12,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185305745] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:00:12,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:00:12,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:00:12,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549191930] [2023-11-29 00:00:12,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:00:12,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:00:12,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:00:12,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:00:12,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:00:13,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2023-11-29 00:00:13,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 93 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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) [2023-11-29 00:00:13,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:00:13,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2023-11-29 00:00:13,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:00:17,382 INFO L124 PetriNetUnfolderBase]: 35140/65926 cut-off events. [2023-11-29 00:00:17,383 INFO L125 PetriNetUnfolderBase]: For 6905/6905 co-relation queries the response was YES. [2023-11-29 00:00:17,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117920 conditions, 65926 events. 35140/65926 cut-off events. For 6905/6905 co-relation queries the response was YES. Maximal size of possible extension queue 2657. Compared 680549 event pairs, 17416 based on Foata normal form. 1026/57265 useless extension candidates. Maximal degree in co-relation 112755. Up to 27862 conditions per place. [2023-11-29 00:00:17,773 INFO L140 encePairwiseOnDemand]: 90/95 looper letters, 105 selfloop transitions, 3 changer transitions 0/156 dead transitions. [2023-11-29 00:00:17,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 156 transitions, 602 flow [2023-11-29 00:00:17,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:00:17,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:00:17,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 299 transitions. [2023-11-29 00:00:17,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7868421052631579 [2023-11-29 00:00:17,775 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 299 transitions. [2023-11-29 00:00:17,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 299 transitions. [2023-11-29 00:00:17,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:00:17,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 299 transitions. [2023-11-29 00:00:17,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 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) [2023-11-29 00:00:17,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 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) [2023-11-29 00:00:17,778 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 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) [2023-11-29 00:00:17,779 INFO L175 Difference]: Start difference. First operand has 91 places, 93 transitions, 224 flow. Second operand 4 states and 299 transitions. [2023-11-29 00:00:17,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 156 transitions, 602 flow [2023-11-29 00:00:17,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 156 transitions, 596 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:00:17,787 INFO L231 Difference]: Finished difference. Result has 95 places, 94 transitions, 240 flow [2023-11-29 00:00:17,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=95, PETRI_TRANSITIONS=94} [2023-11-29 00:00:17,789 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 8 predicate places. [2023-11-29 00:00:17,789 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 94 transitions, 240 flow [2023-11-29 00:00:17,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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) [2023-11-29 00:00:17,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:00:17,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:00:17,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:00:17,790 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 00:00:17,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:00:17,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1905483383, now seen corresponding path program 1 times [2023-11-29 00:00:17,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:00:17,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551905853] [2023-11-29 00:00:17,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:00:17,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:00:17,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:00:17,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:00:17,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:00:17,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551905853] [2023-11-29 00:00:17,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551905853] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:00:17,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:00:17,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:00:17,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697781576] [2023-11-29 00:00:17,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:00:17,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:00:17,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:00:17,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:00:17,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:00:17,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2023-11-29 00:00:17,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 94 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 49.6) internal successors, (248), 5 states have internal predecessors, (248), 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) [2023-11-29 00:00:17,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:00:17,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2023-11-29 00:00:17,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:00:23,443 INFO L124 PetriNetUnfolderBase]: 44518/76865 cut-off events. [2023-11-29 00:00:23,443 INFO L125 PetriNetUnfolderBase]: For 12994/12994 co-relation queries the response was YES. [2023-11-29 00:00:23,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146399 conditions, 76865 events. 44518/76865 cut-off events. For 12994/12994 co-relation queries the response was YES. Maximal size of possible extension queue 2670. Compared 728715 event pairs, 16360 based on Foata normal form. 513/68476 useless extension candidates. Maximal degree in co-relation 141138. Up to 25798 conditions per place. [2023-11-29 00:00:23,930 INFO L140 encePairwiseOnDemand]: 88/95 looper letters, 162 selfloop transitions, 6 changer transitions 0/216 dead transitions. [2023-11-29 00:00:23,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 216 transitions, 888 flow [2023-11-29 00:00:23,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:00:23,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:00:23,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 452 transitions. [2023-11-29 00:00:23,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7929824561403509 [2023-11-29 00:00:23,932 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 452 transitions. [2023-11-29 00:00:23,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 452 transitions. [2023-11-29 00:00:23,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:00:23,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 452 transitions. [2023-11-29 00:00:23,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 75.33333333333333) internal successors, (452), 6 states have internal predecessors, (452), 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) [2023-11-29 00:00:23,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 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) [2023-11-29 00:00:23,938 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 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) [2023-11-29 00:00:23,938 INFO L175 Difference]: Start difference. First operand has 95 places, 94 transitions, 240 flow. Second operand 6 states and 452 transitions. [2023-11-29 00:00:23,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 216 transitions, 888 flow [2023-11-29 00:00:23,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 216 transitions, 884 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:00:23,955 INFO L231 Difference]: Finished difference. Result has 102 places, 98 transitions, 277 flow [2023-11-29 00:00:23,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=277, PETRI_PLACES=102, PETRI_TRANSITIONS=98} [2023-11-29 00:00:23,956 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 15 predicate places. [2023-11-29 00:00:23,956 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 98 transitions, 277 flow [2023-11-29 00:00:23,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.6) internal successors, (248), 5 states have internal predecessors, (248), 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) [2023-11-29 00:00:23,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:00:23,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:00:23,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 00:00:23,957 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 00:00:23,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:00:23,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1059556711, now seen corresponding path program 1 times [2023-11-29 00:00:23,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:00:23,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033930845] [2023-11-29 00:00:23,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:00:23,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:00:23,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:00:24,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:00:24,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:00:24,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033930845] [2023-11-29 00:00:24,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033930845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:00:24,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:00:24,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:00:24,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385403697] [2023-11-29 00:00:24,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:00:24,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:00:24,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:00:24,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:00:24,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:00:24,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 95 [2023-11-29 00:00:24,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 98 transitions, 277 flow. Second operand has 6 states, 6 states have (on average 48.333333333333336) internal successors, (290), 6 states have internal predecessors, (290), 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) [2023-11-29 00:00:24,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:00:24,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 95 [2023-11-29 00:00:24,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:00:32,581 INFO L124 PetriNetUnfolderBase]: 65248/111698 cut-off events. [2023-11-29 00:00:32,581 INFO L125 PetriNetUnfolderBase]: For 35748/35748 co-relation queries the response was YES. [2023-11-29 00:00:32,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228923 conditions, 111698 events. 65248/111698 cut-off events. For 35748/35748 co-relation queries the response was YES. Maximal size of possible extension queue 4107. Compared 1104603 event pairs, 22696 based on Foata normal form. 1026/99810 useless extension candidates. Maximal degree in co-relation 220821. Up to 39208 conditions per place. [2023-11-29 00:00:33,317 INFO L140 encePairwiseOnDemand]: 86/95 looper letters, 222 selfloop transitions, 12 changer transitions 0/282 dead transitions. [2023-11-29 00:00:33,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 282 transitions, 1249 flow [2023-11-29 00:00:33,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:00:33,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 00:00:33,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 606 transitions. [2023-11-29 00:00:33,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7973684210526316 [2023-11-29 00:00:33,321 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 606 transitions. [2023-11-29 00:00:33,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 606 transitions. [2023-11-29 00:00:33,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:00:33,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 606 transitions. [2023-11-29 00:00:33,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 75.75) internal successors, (606), 8 states have internal predecessors, (606), 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) [2023-11-29 00:00:33,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 95.0) internal successors, (855), 9 states have internal predecessors, (855), 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) [2023-11-29 00:00:33,326 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 95.0) internal successors, (855), 9 states have internal predecessors, (855), 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) [2023-11-29 00:00:33,326 INFO L175 Difference]: Start difference. First operand has 102 places, 98 transitions, 277 flow. Second operand 8 states and 606 transitions. [2023-11-29 00:00:33,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 282 transitions, 1249 flow [2023-11-29 00:00:34,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 282 transitions, 1249 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:00:34,027 INFO L231 Difference]: Finished difference. Result has 114 places, 108 transitions, 377 flow [2023-11-29 00:00:34,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=377, PETRI_PLACES=114, PETRI_TRANSITIONS=108} [2023-11-29 00:00:34,028 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 27 predicate places. [2023-11-29 00:00:34,029 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 108 transitions, 377 flow [2023-11-29 00:00:34,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.333333333333336) internal successors, (290), 6 states have internal predecessors, (290), 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) [2023-11-29 00:00:34,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:00:34,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:00:34,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 00:00:34,029 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 00:00:34,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:00:34,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1059557736, now seen corresponding path program 1 times [2023-11-29 00:00:34,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:00:34,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657183364] [2023-11-29 00:00:34,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:00:34,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:00:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:00:34,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:00:34,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:00:34,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657183364] [2023-11-29 00:00:34,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657183364] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:00:34,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:00:34,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:00:34,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775731500] [2023-11-29 00:00:34,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:00:34,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:00:34,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:00:34,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:00:34,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:00:34,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2023-11-29 00:00:34,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 108 transitions, 377 flow. Second operand has 5 states, 5 states have (on average 49.6) internal successors, (248), 5 states have internal predecessors, (248), 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) [2023-11-29 00:00:34,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:00:34,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2023-11-29 00:00:34,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:00:43,895 INFO L124 PetriNetUnfolderBase]: 69889/116050 cut-off events. [2023-11-29 00:00:43,895 INFO L125 PetriNetUnfolderBase]: For 75811/75811 co-relation queries the response was YES. [2023-11-29 00:00:44,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260394 conditions, 116050 events. 69889/116050 cut-off events. For 75811/75811 co-relation queries the response was YES. Maximal size of possible extension queue 4012. Compared 1109709 event pairs, 20704 based on Foata normal form. 513/107045 useless extension candidates. Maximal degree in co-relation 250101. Up to 37144 conditions per place. [2023-11-29 00:00:44,921 INFO L140 encePairwiseOnDemand]: 88/95 looper letters, 198 selfloop transitions, 8 changer transitions 0/255 dead transitions. [2023-11-29 00:00:44,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 255 transitions, 1185 flow [2023-11-29 00:00:44,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:00:44,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:00:44,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 533 transitions. [2023-11-29 00:00:44,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8015037593984963 [2023-11-29 00:00:44,924 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 533 transitions. [2023-11-29 00:00:44,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 533 transitions. [2023-11-29 00:00:44,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:00:44,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 533 transitions. [2023-11-29 00:00:44,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.14285714285714) internal successors, (533), 7 states have internal predecessors, (533), 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) [2023-11-29 00:00:44,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:00:44,927 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:00:44,928 INFO L175 Difference]: Start difference. First operand has 114 places, 108 transitions, 377 flow. Second operand 7 states and 533 transitions. [2023-11-29 00:00:44,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 255 transitions, 1185 flow [2023-11-29 00:00:47,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 255 transitions, 1185 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:00:47,117 INFO L231 Difference]: Finished difference. Result has 123 places, 110 transitions, 418 flow [2023-11-29 00:00:47,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=418, PETRI_PLACES=123, PETRI_TRANSITIONS=110} [2023-11-29 00:00:47,118 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 36 predicate places. [2023-11-29 00:00:47,118 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 110 transitions, 418 flow [2023-11-29 00:00:47,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.6) internal successors, (248), 5 states have internal predecessors, (248), 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) [2023-11-29 00:00:47,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:00:47,119 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2023-11-29 00:00:47,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 00:00:47,119 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-29 00:00:47,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:00:47,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1956440431, now seen corresponding path program 1 times [2023-11-29 00:00:47,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:00:47,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818434490] [2023-11-29 00:00:47,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:00:47,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:00:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:00:47,131 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 00:00:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:00:47,145 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 00:00:47,145 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 00:00:47,145 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2023-11-29 00:00:47,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 33 remaining) [2023-11-29 00:00:47,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 33 remaining) [2023-11-29 00:00:47,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 33 remaining) [2023-11-29 00:00:47,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 33 remaining) [2023-11-29 00:00:47,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 33 remaining) [2023-11-29 00:00:47,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 33 remaining) [2023-11-29 00:00:47,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 33 remaining) [2023-11-29 00:00:47,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 33 remaining) [2023-11-29 00:00:47,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 33 remaining) [2023-11-29 00:00:47,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 33 remaining) [2023-11-29 00:00:47,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 33 remaining) [2023-11-29 00:00:47,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 33 remaining) [2023-11-29 00:00:47,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 33 remaining) [2023-11-29 00:00:47,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 33 remaining) [2023-11-29 00:00:47,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 33 remaining) [2023-11-29 00:00:47,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 33 remaining) [2023-11-29 00:00:47,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 33 remaining) [2023-11-29 00:00:47,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 33 remaining) [2023-11-29 00:00:47,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 33 remaining) [2023-11-29 00:00:47,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 33 remaining) [2023-11-29 00:00:47,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 33 remaining) [2023-11-29 00:00:47,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 33 remaining) [2023-11-29 00:00:47,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 33 remaining) [2023-11-29 00:00:47,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 33 remaining) [2023-11-29 00:00:47,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 33 remaining) [2023-11-29 00:00:47,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 33 remaining) [2023-11-29 00:00:47,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 33 remaining) [2023-11-29 00:00:47,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 33 remaining) [2023-11-29 00:00:47,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 33 remaining) [2023-11-29 00:00:47,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 33 remaining) [2023-11-29 00:00:47,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 33 remaining) [2023-11-29 00:00:47,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 33 remaining) [2023-11-29 00:00:47,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 00:00:47,152 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:00:47,152 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 00:00:47,153 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-29 00:00:47,214 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 00:00:47,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 125 transitions, 278 flow [2023-11-29 00:00:47,236 INFO L124 PetriNetUnfolderBase]: 20/136 cut-off events. [2023-11-29 00:00:47,237 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-29 00:00:47,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 136 events. 20/136 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 519 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 119. Up to 5 conditions per place. [2023-11-29 00:00:47,238 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 125 transitions, 278 flow [2023-11-29 00:00:47,241 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 125 transitions, 278 flow [2023-11-29 00:00:47,242 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:00:47,243 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;@52809f3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:00:47,243 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2023-11-29 00:00:47,245 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:00:47,245 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-11-29 00:00:47,246 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 00:00:47,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:00:47,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 00:00:47,246 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-29 00:00:47,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:00:47,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1652091936, now seen corresponding path program 1 times [2023-11-29 00:00:47,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:00:47,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624895607] [2023-11-29 00:00:47,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:00:47,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:00:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:00:47,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:00:47,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:00:47,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624895607] [2023-11-29 00:00:47,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624895607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:00:47,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:00:47,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:00:47,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947118852] [2023-11-29 00:00:47,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:00:47,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:00:47,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:00:47,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:00:47,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:00:47,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 125 [2023-11-29 00:00:47,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 125 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:00:47,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:00:47,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 125 [2023-11-29 00:00:47,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:01:11,343 INFO L124 PetriNetUnfolderBase]: 210646/357252 cut-off events. [2023-11-29 00:01:11,343 INFO L125 PetriNetUnfolderBase]: For 18028/18028 co-relation queries the response was YES. [2023-11-29 00:01:12,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 619442 conditions, 357252 events. 210646/357252 cut-off events. For 18028/18028 co-relation queries the response was YES. Maximal size of possible extension queue 13335. Compared 4011774 event pairs, 85750 based on Foata normal form. 34464/337374 useless extension candidates. Maximal degree in co-relation 55567. Up to 146131 conditions per place. [2023-11-29 00:01:13,930 INFO L140 encePairwiseOnDemand]: 116/125 looper letters, 99 selfloop transitions, 2 changer transitions 0/168 dead transitions. [2023-11-29 00:01:13,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 168 transitions, 587 flow [2023-11-29 00:01:13,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:01:13,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:01:13,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 314 transitions. [2023-11-29 00:01:13,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8373333333333334 [2023-11-29 00:01:13,933 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 314 transitions. [2023-11-29 00:01:13,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 314 transitions. [2023-11-29 00:01:13,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:01:13,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 314 transitions. [2023-11-29 00:01:13,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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) [2023-11-29 00:01:13,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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) [2023-11-29 00:01:13,935 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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) [2023-11-29 00:01:13,935 INFO L175 Difference]: Start difference. First operand has 114 places, 125 transitions, 278 flow. Second operand 3 states and 314 transitions. [2023-11-29 00:01:13,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 168 transitions, 587 flow [2023-11-29 00:01:13,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 168 transitions, 575 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-29 00:01:13,945 INFO L231 Difference]: Finished difference. Result has 116 places, 121 transitions, 276 flow [2023-11-29 00:01:13,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=276, PETRI_PLACES=116, PETRI_TRANSITIONS=121} [2023-11-29 00:01:13,946 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 2 predicate places. [2023-11-29 00:01:13,947 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 121 transitions, 276 flow [2023-11-29 00:01:13,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:01:13,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:01:13,947 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:01:13,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 00:01:13,947 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-29 00:01:13,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:01:13,948 INFO L85 PathProgramCache]: Analyzing trace with hash 380672960, now seen corresponding path program 1 times [2023-11-29 00:01:13,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:01:13,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106582779] [2023-11-29 00:01:13,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:01:13,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:01:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:01:13,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:01:13,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:01:13,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106582779] [2023-11-29 00:01:13,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106582779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:01:13,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:01:13,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:01:13,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538561366] [2023-11-29 00:01:13,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:01:13,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:01:13,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:01:13,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:01:13,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:01:13,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 125 [2023-11-29 00:01:13,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 121 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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) [2023-11-29 00:01:13,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:01:13,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 125 [2023-11-29 00:01:13,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand