./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-match-subst.wvr.c --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_a3d8ee61-2c03-48c1-beda-c2b9657b1d7c/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3d8ee61-2c03-48c1-beda-c2b9657b1d7c/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_a3d8ee61-2c03-48c1-beda-c2b9657b1d7c/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3d8ee61-2c03-48c1-beda-c2b9657b1d7c/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-match-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3d8ee61-2c03-48c1-beda-c2b9657b1d7c/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_a3d8ee61-2c03-48c1-beda-c2b9657b1d7c/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 2c931aeff3bd4feb775048ea000220a43a3b08d8a3667f51cb57a0babc9201aa --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:27:55,723 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:27:55,790 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3d8ee61-2c03-48c1-beda-c2b9657b1d7c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 00:27:55,795 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:27:55,796 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:27:55,822 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:27:55,823 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:27:55,823 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:27:55,824 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:27:55,824 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:27:55,825 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:27:55,826 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:27:55,826 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:27:55,827 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:27:55,827 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:27:55,828 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:27:55,828 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:27:55,829 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:27:55,829 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:27:55,830 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:27:55,831 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:27:55,833 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:27:55,833 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:27:55,834 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:27:55,834 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 00:27:55,835 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:27:55,835 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:27:55,835 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:27:55,836 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:27:55,836 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:27:55,837 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:27:55,837 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:27:55,837 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:27:55,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:27:55,838 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:27:55,838 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:27:55,838 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:27:55,838 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:27:55,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:27:55,839 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:27:55,839 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:27:55,839 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:27:55,840 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:27:55,840 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:27:55,840 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_a3d8ee61-2c03-48c1-beda-c2b9657b1d7c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3d8ee61-2c03-48c1-beda-c2b9657b1d7c/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c931aeff3bd4feb775048ea000220a43a3b08d8a3667f51cb57a0babc9201aa [2023-11-29 00:27:56,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:27:56,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:27:56,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:27:56,068 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:27:56,068 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:27:56,069 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3d8ee61-2c03-48c1-beda-c2b9657b1d7c/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/chl-match-subst.wvr.c [2023-11-29 00:27:58,790 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:27:58,956 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:27:58,957 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3d8ee61-2c03-48c1-beda-c2b9657b1d7c/sv-benchmarks/c/weaver/chl-match-subst.wvr.c [2023-11-29 00:27:58,964 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3d8ee61-2c03-48c1-beda-c2b9657b1d7c/bin/uautomizer-verify-BQ2R08f2Ya/data/5e13b7813/b9db397e3a8442e8b0ea9af1f530f98b/FLAG69b254c07 [2023-11-29 00:27:58,977 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3d8ee61-2c03-48c1-beda-c2b9657b1d7c/bin/uautomizer-verify-BQ2R08f2Ya/data/5e13b7813/b9db397e3a8442e8b0ea9af1f530f98b [2023-11-29 00:27:58,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:27:58,982 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:27:58,983 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:27:58,983 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:27:58,988 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:27:58,989 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:27:58" (1/1) ... [2023-11-29 00:27:58,990 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d492dab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:27:58, skipping insertion in model container [2023-11-29 00:27:58,990 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:27:58" (1/1) ... [2023-11-29 00:27:59,016 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:27:59,195 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:27:59,206 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:27:59,234 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:27:59,250 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:27:59,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:27:59 WrapperNode [2023-11-29 00:27:59,251 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:27:59,252 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:27:59,252 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:27:59,252 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:27:59,259 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:27:59" (1/1) ... [2023-11-29 00:27:59,268 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:27:59" (1/1) ... [2023-11-29 00:27:59,297 INFO L138 Inliner]: procedures = 23, calls = 35, calls flagged for inlining = 13, calls inlined = 23, statements flattened = 303 [2023-11-29 00:27:59,298 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:27:59,298 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:27:59,299 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:27:59,299 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:27:59,310 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:27:59" (1/1) ... [2023-11-29 00:27:59,310 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:27:59" (1/1) ... [2023-11-29 00:27:59,314 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:27:59" (1/1) ... [2023-11-29 00:27:59,332 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-29 00:27:59,332 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:27:59" (1/1) ... [2023-11-29 00:27:59,333 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:27:59" (1/1) ... [2023-11-29 00:27:59,341 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:27:59" (1/1) ... [2023-11-29 00:27:59,344 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:27:59" (1/1) ... [2023-11-29 00:27:59,347 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:27:59" (1/1) ... [2023-11-29 00:27:59,349 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:27:59" (1/1) ... [2023-11-29 00:27:59,353 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:27:59,354 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:27:59,354 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:27:59,354 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:27:59,355 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:27:59" (1/1) ... [2023-11-29 00:27:59,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:27:59,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3d8ee61-2c03-48c1-beda-c2b9657b1d7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:59,382 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3d8ee61-2c03-48c1-beda-c2b9657b1d7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:27:59,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3d8ee61-2c03-48c1-beda-c2b9657b1d7c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:27:59,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:27:59,422 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 00:27:59,422 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 00:27:59,422 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 00:27:59,422 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 00:27:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 00:27:59,423 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 00:27:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:27:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 00:27:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 00:27:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 00:27:59,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 00:27:59,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 00:27:59,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 00:27:59,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 00:27:59,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 00:27:59,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:27:59,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:27:59,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 00:27:59,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 00:27:59,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 00:27:59,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 00:27:59,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:27:59,427 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 00:27:59,543 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:27:59,545 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:28:00,017 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:28:00,330 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:28:00,330 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 00:28:00,331 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:28:00 BoogieIcfgContainer [2023-11-29 00:28:00,331 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:28:00,333 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:28:00,333 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:28:00,336 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:28:00,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:27:58" (1/3) ... [2023-11-29 00:28:00,337 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1659dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:28:00, skipping insertion in model container [2023-11-29 00:28:00,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:27:59" (2/3) ... [2023-11-29 00:28:00,338 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1659dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:28:00, skipping insertion in model container [2023-11-29 00:28:00,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:28:00" (3/3) ... [2023-11-29 00:28:00,339 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-subst.wvr.c [2023-11-29 00:28:00,348 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 00:28:00,358 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:28:00,358 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2023-11-29 00:28:00,358 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 00:28:00,445 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 00:28:00,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 127 transitions, 275 flow [2023-11-29 00:28:00,536 INFO L124 PetriNetUnfolderBase]: 12/124 cut-off events. [2023-11-29 00:28:00,536 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 00:28:00,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 124 events. 12/124 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 492 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 120. Up to 2 conditions per place. [2023-11-29 00:28:00,542 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 127 transitions, 275 flow [2023-11-29 00:28:00,548 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 122 transitions, 259 flow [2023-11-29 00:28:00,558 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:28:00,565 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;@30fbe2cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:28:00,565 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2023-11-29 00:28:00,571 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:28:00,571 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-11-29 00:28:00,572 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:28:00,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:28:00,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 00:28:00,573 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 00:28:00,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:00,578 INFO L85 PathProgramCache]: Analyzing trace with hash 860760334, now seen corresponding path program 1 times [2023-11-29 00:28:00,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:00,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398543237] [2023-11-29 00:28:00,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:00,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:00,822 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 00:28:00,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:00,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398543237] [2023-11-29 00:28:00,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398543237] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:28:00,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:28:00,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:28:00,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987014069] [2023-11-29 00:28:00,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:28:00,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:28:00,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:00,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:28:00,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:28:00,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 127 [2023-11-29 00:28:00,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 122 transitions, 259 flow. Second operand has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 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 00:28:00,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:28:00,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 127 [2023-11-29 00:28:00,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:28:05,276 INFO L124 PetriNetUnfolderBase]: 23388/41171 cut-off events. [2023-11-29 00:28:05,276 INFO L125 PetriNetUnfolderBase]: For 609/609 co-relation queries the response was YES. [2023-11-29 00:28:05,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72899 conditions, 41171 events. 23388/41171 cut-off events. For 609/609 co-relation queries the response was YES. Maximal size of possible extension queue 1578. Compared 375812 event pairs, 5863 based on Foata normal form. 1256/37087 useless extension candidates. Maximal degree in co-relation 70698. Up to 15184 conditions per place. [2023-11-29 00:28:05,561 INFO L140 encePairwiseOnDemand]: 112/127 looper letters, 106 selfloop transitions, 10 changer transitions 0/182 dead transitions. [2023-11-29 00:28:05,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 182 transitions, 623 flow [2023-11-29 00:28:05,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:28:05,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:28:05,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 398 transitions. [2023-11-29 00:28:05,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7834645669291339 [2023-11-29 00:28:05,575 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 398 transitions. [2023-11-29 00:28:05,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 398 transitions. [2023-11-29 00:28:05,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:28:05,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 398 transitions. [2023-11-29 00:28:05,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 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 00:28:05,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 00:28:05,589 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 00:28:05,590 INFO L175 Difference]: Start difference. First operand has 120 places, 122 transitions, 259 flow. Second operand 4 states and 398 transitions. [2023-11-29 00:28:05,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 182 transitions, 623 flow [2023-11-29 00:28:05,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 182 transitions, 608 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 00:28:05,604 INFO L231 Difference]: Finished difference. Result has 119 places, 126 transitions, 316 flow [2023-11-29 00:28:05,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=316, PETRI_PLACES=119, PETRI_TRANSITIONS=126} [2023-11-29 00:28:05,609 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, -1 predicate places. [2023-11-29 00:28:05,609 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 126 transitions, 316 flow [2023-11-29 00:28:05,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 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 00:28:05,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:28:05,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 00:28:05,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:28:05,610 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 00:28:05,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:05,611 INFO L85 PathProgramCache]: Analyzing trace with hash 913767586, now seen corresponding path program 1 times [2023-11-29 00:28:05,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:05,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033537306] [2023-11-29 00:28:05,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:05,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:05,697 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 00:28:05,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:05,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033537306] [2023-11-29 00:28:05,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033537306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:28:05,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:28:05,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:28:05,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267995646] [2023-11-29 00:28:05,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:28:05,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:28:05,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:05,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:28:05,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:28:05,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 127 [2023-11-29 00:28:05,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 126 transitions, 316 flow. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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 00:28:05,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:28:05,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 127 [2023-11-29 00:28:05,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:28:08,576 INFO L124 PetriNetUnfolderBase]: 16507/33039 cut-off events. [2023-11-29 00:28:08,576 INFO L125 PetriNetUnfolderBase]: For 6538/6981 co-relation queries the response was YES. [2023-11-29 00:28:08,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60652 conditions, 33039 events. 16507/33039 cut-off events. For 6538/6981 co-relation queries the response was YES. Maximal size of possible extension queue 1336. Compared 331229 event pairs, 7437 based on Foata normal form. 443/28891 useless extension candidates. Maximal degree in co-relation 40815. Up to 11150 conditions per place. [2023-11-29 00:28:08,733 INFO L140 encePairwiseOnDemand]: 120/127 looper letters, 73 selfloop transitions, 7 changer transitions 0/154 dead transitions. [2023-11-29 00:28:08,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 154 transitions, 537 flow [2023-11-29 00:28:08,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:28:08,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:28:08,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2023-11-29 00:28:08,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7421259842519685 [2023-11-29 00:28:08,736 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2023-11-29 00:28:08,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2023-11-29 00:28:08,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:28:08,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2023-11-29 00:28:08,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 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 00:28:08,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 00:28:08,742 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 00:28:08,742 INFO L175 Difference]: Start difference. First operand has 119 places, 126 transitions, 316 flow. Second operand 4 states and 377 transitions. [2023-11-29 00:28:08,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 154 transitions, 537 flow [2023-11-29 00:28:08,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 154 transitions, 537 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:28:08,768 INFO L231 Difference]: Finished difference. Result has 122 places, 126 transitions, 340 flow [2023-11-29 00:28:08,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=340, PETRI_PLACES=122, PETRI_TRANSITIONS=126} [2023-11-29 00:28:08,770 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 2 predicate places. [2023-11-29 00:28:08,770 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 126 transitions, 340 flow [2023-11-29 00:28:08,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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 00:28:08,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:28:08,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:08,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:28:08,771 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 00:28:08,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:08,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1738006670, now seen corresponding path program 1 times [2023-11-29 00:28:08,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:08,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725879537] [2023-11-29 00:28:08,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:08,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:08,835 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 00:28:08,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:08,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725879537] [2023-11-29 00:28:08,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725879537] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:28:08,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:28:08,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:28:08,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070715857] [2023-11-29 00:28:08,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:28:08,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:28:08,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:08,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:28:08,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:28:08,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 127 [2023-11-29 00:28:08,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 126 transitions, 340 flow. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 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 00:28:08,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:28:08,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 127 [2023-11-29 00:28:08,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:28:12,056 INFO L124 PetriNetUnfolderBase]: 18469/34866 cut-off events. [2023-11-29 00:28:12,056 INFO L125 PetriNetUnfolderBase]: For 15818/16129 co-relation queries the response was YES. [2023-11-29 00:28:12,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69759 conditions, 34866 events. 18469/34866 cut-off events. For 15818/16129 co-relation queries the response was YES. Maximal size of possible extension queue 1360. Compared 335113 event pairs, 6689 based on Foata normal form. 625/31192 useless extension candidates. Maximal degree in co-relation 28054. Up to 12242 conditions per place. [2023-11-29 00:28:12,249 INFO L140 encePairwiseOnDemand]: 121/127 looper letters, 75 selfloop transitions, 7 changer transitions 0/152 dead transitions. [2023-11-29 00:28:12,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 152 transitions, 557 flow [2023-11-29 00:28:12,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:28:12,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:28:12,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 368 transitions. [2023-11-29 00:28:12,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7244094488188977 [2023-11-29 00:28:12,251 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 368 transitions. [2023-11-29 00:28:12,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 368 transitions. [2023-11-29 00:28:12,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:28:12,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 368 transitions. [2023-11-29 00:28:12,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 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 00:28:12,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 00:28:12,254 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 00:28:12,255 INFO L175 Difference]: Start difference. First operand has 122 places, 126 transitions, 340 flow. Second operand 4 states and 368 transitions. [2023-11-29 00:28:12,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 152 transitions, 557 flow [2023-11-29 00:28:12,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 152 transitions, 549 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:28:12,482 INFO L231 Difference]: Finished difference. Result has 122 places, 125 transitions, 342 flow [2023-11-29 00:28:12,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=342, PETRI_PLACES=122, PETRI_TRANSITIONS=125} [2023-11-29 00:28:12,483 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 2 predicate places. [2023-11-29 00:28:12,483 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 125 transitions, 342 flow [2023-11-29 00:28:12,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 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 00:28:12,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:28:12,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:12,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:28:12,484 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 00:28:12,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:12,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1803006727, now seen corresponding path program 1 times [2023-11-29 00:28:12,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:12,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814400545] [2023-11-29 00:28:12,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:12,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:12,540 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 00:28:12,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:12,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814400545] [2023-11-29 00:28:12,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814400545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:28:12,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:28:12,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:28:12,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389496476] [2023-11-29 00:28:12,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:28:12,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:28:12,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:12,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:28:12,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:28:12,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 127 [2023-11-29 00:28:12,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 125 transitions, 342 flow. Second operand has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 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 00:28:12,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:28:12,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 127 [2023-11-29 00:28:12,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:28:17,361 INFO L124 PetriNetUnfolderBase]: 33753/59489 cut-off events. [2023-11-29 00:28:17,361 INFO L125 PetriNetUnfolderBase]: For 32152/33929 co-relation queries the response was YES. [2023-11-29 00:28:17,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122648 conditions, 59489 events. 33753/59489 cut-off events. For 32152/33929 co-relation queries the response was YES. Maximal size of possible extension queue 2229. Compared 572667 event pairs, 9115 based on Foata normal form. 3050/54304 useless extension candidates. Maximal degree in co-relation 64120. Up to 22196 conditions per place. [2023-11-29 00:28:17,650 INFO L140 encePairwiseOnDemand]: 112/127 looper letters, 121 selfloop transitions, 10 changer transitions 0/195 dead transitions. [2023-11-29 00:28:17,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 195 transitions, 858 flow [2023-11-29 00:28:17,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:28:17,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:28:17,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 398 transitions. [2023-11-29 00:28:17,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7834645669291339 [2023-11-29 00:28:17,653 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 398 transitions. [2023-11-29 00:28:17,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 398 transitions. [2023-11-29 00:28:17,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:28:17,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 398 transitions. [2023-11-29 00:28:17,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 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 00:28:17,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 00:28:17,657 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 00:28:17,657 INFO L175 Difference]: Start difference. First operand has 122 places, 125 transitions, 342 flow. Second operand 4 states and 398 transitions. [2023-11-29 00:28:17,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 195 transitions, 858 flow [2023-11-29 00:28:17,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 195 transitions, 832 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 00:28:17,929 INFO L231 Difference]: Finished difference. Result has 123 places, 129 transitions, 394 flow [2023-11-29 00:28:17,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=394, PETRI_PLACES=123, PETRI_TRANSITIONS=129} [2023-11-29 00:28:17,930 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 3 predicate places. [2023-11-29 00:28:17,931 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 129 transitions, 394 flow [2023-11-29 00:28:17,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 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 00:28:17,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:28:17,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:17,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:28:17,931 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 00:28:17,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:17,932 INFO L85 PathProgramCache]: Analyzing trace with hash -58632644, now seen corresponding path program 1 times [2023-11-29 00:28:17,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:17,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634109285] [2023-11-29 00:28:17,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:17,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:17,985 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 00:28:17,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:17,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634109285] [2023-11-29 00:28:17,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634109285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:28:17,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:28:17,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:28:17,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129804453] [2023-11-29 00:28:17,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:28:17,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:28:17,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:17,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:28:17,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:28:18,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 127 [2023-11-29 00:28:18,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 129 transitions, 394 flow. Second operand has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 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 00:28:18,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:28:18,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 127 [2023-11-29 00:28:18,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:28:22,019 INFO L124 PetriNetUnfolderBase]: 24882/49383 cut-off events. [2023-11-29 00:28:22,019 INFO L125 PetriNetUnfolderBase]: For 28927/30705 co-relation queries the response was YES. [2023-11-29 00:28:22,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104483 conditions, 49383 events. 24882/49383 cut-off events. For 28927/30705 co-relation queries the response was YES. Maximal size of possible extension queue 1904. Compared 520178 event pairs, 7994 based on Foata normal form. 1333/44759 useless extension candidates. Maximal degree in co-relation 38232. Up to 18430 conditions per place. [2023-11-29 00:28:22,344 INFO L140 encePairwiseOnDemand]: 120/127 looper letters, 83 selfloop transitions, 7 changer transitions 0/162 dead transitions. [2023-11-29 00:28:22,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 162 transitions, 693 flow [2023-11-29 00:28:22,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:28:22,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:28:22,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2023-11-29 00:28:22,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7421259842519685 [2023-11-29 00:28:22,346 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2023-11-29 00:28:22,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2023-11-29 00:28:22,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:28:22,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2023-11-29 00:28:22,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 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 00:28:22,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 00:28:22,350 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 00:28:22,350 INFO L175 Difference]: Start difference. First operand has 123 places, 129 transitions, 394 flow. Second operand 4 states and 377 transitions. [2023-11-29 00:28:22,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 162 transitions, 693 flow [2023-11-29 00:28:22,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 162 transitions, 693 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:28:22,750 INFO L231 Difference]: Finished difference. Result has 126 places, 129 transitions, 418 flow [2023-11-29 00:28:22,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=418, PETRI_PLACES=126, PETRI_TRANSITIONS=129} [2023-11-29 00:28:22,751 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 6 predicate places. [2023-11-29 00:28:22,752 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 129 transitions, 418 flow [2023-11-29 00:28:22,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 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 00:28:22,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:28:22,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:22,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:28:22,753 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 00:28:22,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:22,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1956369093, now seen corresponding path program 1 times [2023-11-29 00:28:22,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:22,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996444684] [2023-11-29 00:28:22,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:22,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:22,802 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 00:28:22,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:22,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996444684] [2023-11-29 00:28:22,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996444684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:28:22,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:28:22,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:28:22,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275475701] [2023-11-29 00:28:22,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:28:22,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:28:22,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:22,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:28:22,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:28:22,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 127 [2023-11-29 00:28:22,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 129 transitions, 418 flow. Second operand has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 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 00:28:22,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:28:22,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 127 [2023-11-29 00:28:22,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:28:28,327 INFO L124 PetriNetUnfolderBase]: 31187/63332 cut-off events. [2023-11-29 00:28:28,327 INFO L125 PetriNetUnfolderBase]: For 50329/52213 co-relation queries the response was YES. [2023-11-29 00:28:28,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136822 conditions, 63332 events. 31187/63332 cut-off events. For 50329/52213 co-relation queries the response was YES. Maximal size of possible extension queue 2463. Compared 702517 event pairs, 12770 based on Foata normal form. 1789/56819 useless extension candidates. Maximal degree in co-relation 102531. Up to 17269 conditions per place. [2023-11-29 00:28:28,781 INFO L140 encePairwiseOnDemand]: 118/127 looper letters, 119 selfloop transitions, 9 changer transitions 0/193 dead transitions. [2023-11-29 00:28:28,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 193 transitions, 906 flow [2023-11-29 00:28:28,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:28:28,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:28:28,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 390 transitions. [2023-11-29 00:28:28,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7677165354330708 [2023-11-29 00:28:28,783 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 390 transitions. [2023-11-29 00:28:28,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 390 transitions. [2023-11-29 00:28:28,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:28:28,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 390 transitions. [2023-11-29 00:28:28,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 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 00:28:28,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 00:28:28,786 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 00:28:28,786 INFO L175 Difference]: Start difference. First operand has 126 places, 129 transitions, 418 flow. Second operand 4 states and 390 transitions. [2023-11-29 00:28:28,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 193 transitions, 906 flow [2023-11-29 00:28:29,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 193 transitions, 888 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:28:29,094 INFO L231 Difference]: Finished difference. Result has 127 places, 127 transitions, 416 flow [2023-11-29 00:28:29,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=416, PETRI_PLACES=127, PETRI_TRANSITIONS=127} [2023-11-29 00:28:29,094 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 7 predicate places. [2023-11-29 00:28:29,095 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 127 transitions, 416 flow [2023-11-29 00:28:29,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 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 00:28:29,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:28:29,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:29,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:28:29,095 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 00:28:29,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:29,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1956368068, now seen corresponding path program 1 times [2023-11-29 00:28:29,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:29,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767613323] [2023-11-29 00:28:29,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:29,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:29,163 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 00:28:29,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:29,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767613323] [2023-11-29 00:28:29,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767613323] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:28:29,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:28:29,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:28:29,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653587799] [2023-11-29 00:28:29,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:28:29,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:28:29,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:29,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:28:29,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:28:29,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 127 [2023-11-29 00:28:29,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 127 transitions, 416 flow. Second operand has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 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 00:28:29,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:28:29,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 127 [2023-11-29 00:28:29,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:28:34,927 INFO L124 PetriNetUnfolderBase]: 43132/69633 cut-off events. [2023-11-29 00:28:34,927 INFO L125 PetriNetUnfolderBase]: For 55228/58611 co-relation queries the response was YES. [2023-11-29 00:28:35,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166851 conditions, 69633 events. 43132/69633 cut-off events. For 55228/58611 co-relation queries the response was YES. Maximal size of possible extension queue 2437. Compared 609830 event pairs, 13116 based on Foata normal form. 1684/66677 useless extension candidates. Maximal degree in co-relation 66738. Up to 30626 conditions per place. [2023-11-29 00:28:35,485 INFO L140 encePairwiseOnDemand]: 116/127 looper letters, 117 selfloop transitions, 12 changer transitions 0/192 dead transitions. [2023-11-29 00:28:35,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 192 transitions, 906 flow [2023-11-29 00:28:35,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:28:35,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:28:35,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 468 transitions. [2023-11-29 00:28:35,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7370078740157481 [2023-11-29 00:28:35,487 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 468 transitions. [2023-11-29 00:28:35,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 468 transitions. [2023-11-29 00:28:35,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:28:35,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 468 transitions. [2023-11-29 00:28:35,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.6) internal successors, (468), 5 states have internal predecessors, (468), 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 00:28:35,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 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 00:28:35,492 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 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 00:28:35,492 INFO L175 Difference]: Start difference. First operand has 127 places, 127 transitions, 416 flow. Second operand 5 states and 468 transitions. [2023-11-29 00:28:35,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 192 transitions, 906 flow [2023-11-29 00:28:36,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 192 transitions, 899 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:28:36,454 INFO L231 Difference]: Finished difference. Result has 131 places, 127 transitions, 455 flow [2023-11-29 00:28:36,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=455, PETRI_PLACES=131, PETRI_TRANSITIONS=127} [2023-11-29 00:28:36,455 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 11 predicate places. [2023-11-29 00:28:36,455 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 127 transitions, 455 flow [2023-11-29 00:28:36,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 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 00:28:36,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:28:36,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:36,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:28:36,456 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 00:28:36,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:36,457 INFO L85 PathProgramCache]: Analyzing trace with hash 517868981, now seen corresponding path program 1 times [2023-11-29 00:28:36,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:36,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251539324] [2023-11-29 00:28:36,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:36,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:36,541 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 00:28:36,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:36,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251539324] [2023-11-29 00:28:36,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251539324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:28:36,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:28:36,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:28:36,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195743506] [2023-11-29 00:28:36,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:28:36,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:28:36,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:36,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:28:36,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:28:36,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 127 [2023-11-29 00:28:36,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 127 transitions, 455 flow. Second operand has 6 states, 6 states have (on average 66.16666666666667) internal successors, (397), 6 states have internal predecessors, (397), 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 00:28:36,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:28:36,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 127 [2023-11-29 00:28:36,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:28:43,060 INFO L124 PetriNetUnfolderBase]: 42685/69458 cut-off events. [2023-11-29 00:28:43,061 INFO L125 PetriNetUnfolderBase]: For 79576/83546 co-relation queries the response was YES. [2023-11-29 00:28:43,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171199 conditions, 69458 events. 42685/69458 cut-off events. For 79576/83546 co-relation queries the response was YES. Maximal size of possible extension queue 2411. Compared 621481 event pairs, 12731 based on Foata normal form. 3630/67448 useless extension candidates. Maximal degree in co-relation 65819. Up to 23319 conditions per place. [2023-11-29 00:28:43,459 INFO L140 encePairwiseOnDemand]: 114/127 looper letters, 214 selfloop transitions, 13 changer transitions 0/289 dead transitions. [2023-11-29 00:28:43,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 289 transitions, 1490 flow [2023-11-29 00:28:43,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:28:43,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 00:28:43,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 715 transitions. [2023-11-29 00:28:43,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7037401574803149 [2023-11-29 00:28:43,462 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 715 transitions. [2023-11-29 00:28:43,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 715 transitions. [2023-11-29 00:28:43,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:28:43,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 715 transitions. [2023-11-29 00:28:43,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 89.375) internal successors, (715), 8 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:43,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 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 00:28:43,466 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 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 00:28:43,466 INFO L175 Difference]: Start difference. First operand has 131 places, 127 transitions, 455 flow. Second operand 8 states and 715 transitions. [2023-11-29 00:28:43,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 289 transitions, 1490 flow [2023-11-29 00:28:43,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 289 transitions, 1480 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:28:43,911 INFO L231 Difference]: Finished difference. Result has 139 places, 129 transitions, 502 flow [2023-11-29 00:28:43,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=502, PETRI_PLACES=139, PETRI_TRANSITIONS=129} [2023-11-29 00:28:43,911 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 19 predicate places. [2023-11-29 00:28:43,911 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 129 transitions, 502 flow [2023-11-29 00:28:43,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.16666666666667) internal successors, (397), 6 states have internal predecessors, (397), 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 00:28:43,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:28:43,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:43,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 00:28:43,912 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 00:28:43,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:43,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1817642691, now seen corresponding path program 1 times [2023-11-29 00:28:43,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:43,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99568075] [2023-11-29 00:28:43,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:43,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:43,952 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 00:28:43,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:43,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99568075] [2023-11-29 00:28:43,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99568075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:28:43,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:28:43,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:28:43,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305798788] [2023-11-29 00:28:43,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:28:43,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:28:43,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:43,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:28:43,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:28:43,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 127 [2023-11-29 00:28:43,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 129 transitions, 502 flow. Second operand has 4 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 00:28:43,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:28:43,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 127 [2023-11-29 00:28:43,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:28:48,529 INFO L124 PetriNetUnfolderBase]: 25059/51130 cut-off events. [2023-11-29 00:28:48,529 INFO L125 PetriNetUnfolderBase]: For 96849/101324 co-relation queries the response was YES. [2023-11-29 00:28:48,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124339 conditions, 51130 events. 25059/51130 cut-off events. For 96849/101324 co-relation queries the response was YES. Maximal size of possible extension queue 1999. Compared 554033 event pairs, 10611 based on Foata normal form. 3441/47444 useless extension candidates. Maximal degree in co-relation 112618. Up to 17917 conditions per place. [2023-11-29 00:28:48,870 INFO L140 encePairwiseOnDemand]: 121/127 looper letters, 89 selfloop transitions, 7 changer transitions 0/162 dead transitions. [2023-11-29 00:28:48,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 162 transitions, 870 flow [2023-11-29 00:28:48,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:28:48,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:28:48,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 368 transitions. [2023-11-29 00:28:48,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7244094488188977 [2023-11-29 00:28:48,872 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 368 transitions. [2023-11-29 00:28:48,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 368 transitions. [2023-11-29 00:28:48,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:28:48,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 368 transitions. [2023-11-29 00:28:48,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 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 00:28:48,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 00:28:48,874 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 00:28:48,875 INFO L175 Difference]: Start difference. First operand has 139 places, 129 transitions, 502 flow. Second operand 4 states and 368 transitions. [2023-11-29 00:28:48,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 162 transitions, 870 flow [2023-11-29 00:28:49,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 162 transitions, 851 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-29 00:28:49,258 INFO L231 Difference]: Finished difference. Result has 138 places, 128 transitions, 501 flow [2023-11-29 00:28:49,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=501, PETRI_PLACES=138, PETRI_TRANSITIONS=128} [2023-11-29 00:28:49,259 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 18 predicate places. [2023-11-29 00:28:49,259 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 128 transitions, 501 flow [2023-11-29 00:28:49,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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 00:28:49,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:28:49,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:49,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 00:28:49,260 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 00:28:49,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:49,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1874450223, now seen corresponding path program 1 times [2023-11-29 00:28:49,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:49,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722104725] [2023-11-29 00:28:49,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:49,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:49,307 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 00:28:49,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:49,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722104725] [2023-11-29 00:28:49,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722104725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:28:49,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:28:49,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:28:49,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475865406] [2023-11-29 00:28:49,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:28:49,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:28:49,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:49,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:28:49,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:28:49,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 127 [2023-11-29 00:28:49,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 128 transitions, 501 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 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 00:28:49,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:28:49,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 127 [2023-11-29 00:28:49,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:28:57,167 INFO L124 PetriNetUnfolderBase]: 47302/83396 cut-off events. [2023-11-29 00:28:57,168 INFO L125 PetriNetUnfolderBase]: For 171026/181414 co-relation queries the response was YES. [2023-11-29 00:28:57,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222298 conditions, 83396 events. 47302/83396 cut-off events. For 171026/181414 co-relation queries the response was YES. Maximal size of possible extension queue 3027. Compared 842928 event pairs, 13067 based on Foata normal form. 9179/82509 useless extension candidates. Maximal degree in co-relation 202110. Up to 29296 conditions per place. [2023-11-29 00:28:57,729 INFO L140 encePairwiseOnDemand]: 112/127 looper letters, 142 selfloop transitions, 10 changer transitions 0/212 dead transitions. [2023-11-29 00:28:57,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 212 transitions, 1287 flow [2023-11-29 00:28:57,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:28:57,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:28:57,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 398 transitions. [2023-11-29 00:28:57,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7834645669291339 [2023-11-29 00:28:57,732 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 398 transitions. [2023-11-29 00:28:57,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 398 transitions. [2023-11-29 00:28:57,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:28:57,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 398 transitions. [2023-11-29 00:28:57,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 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 00:28:57,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 00:28:57,735 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 00:28:57,735 INFO L175 Difference]: Start difference. First operand has 138 places, 128 transitions, 501 flow. Second operand 4 states and 398 transitions. [2023-11-29 00:28:57,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 212 transitions, 1287 flow [2023-11-29 00:28:58,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 212 transitions, 1261 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 00:28:58,590 INFO L231 Difference]: Finished difference. Result has 139 places, 132 transitions, 553 flow [2023-11-29 00:28:58,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=553, PETRI_PLACES=139, PETRI_TRANSITIONS=132} [2023-11-29 00:28:58,591 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 19 predicate places. [2023-11-29 00:28:58,591 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 132 transitions, 553 flow [2023-11-29 00:28:58,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 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 00:28:58,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:28:58,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:58,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 00:28:58,592 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 00:28:58,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:58,593 INFO L85 PathProgramCache]: Analyzing trace with hash -178612662, now seen corresponding path program 1 times [2023-11-29 00:28:58,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:58,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201424915] [2023-11-29 00:28:58,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:58,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:58,656 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 00:28:58,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:58,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201424915] [2023-11-29 00:28:58,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201424915] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:28:58,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:28:58,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:28:58,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407597032] [2023-11-29 00:28:58,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:28:58,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:28:58,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:58,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:28:58,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:28:58,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 127 [2023-11-29 00:28:58,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 132 transitions, 553 flow. Second operand has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 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 00:28:58,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:28:58,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 127 [2023-11-29 00:28:58,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:29:07,338 INFO L124 PetriNetUnfolderBase]: 50078/82767 cut-off events. [2023-11-29 00:29:07,338 INFO L125 PetriNetUnfolderBase]: For 128748/134904 co-relation queries the response was YES. [2023-11-29 00:29:07,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237204 conditions, 82767 events. 50078/82767 cut-off events. For 128748/134904 co-relation queries the response was YES. Maximal size of possible extension queue 2858. Compared 779483 event pairs, 16441 based on Foata normal form. 4836/82799 useless extension candidates. Maximal degree in co-relation 219355. Up to 29062 conditions per place. [2023-11-29 00:29:07,903 INFO L140 encePairwiseOnDemand]: 114/127 looper letters, 202 selfloop transitions, 16 changer transitions 0/278 dead transitions. [2023-11-29 00:29:07,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 278 transitions, 1621 flow [2023-11-29 00:29:07,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:29:07,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:29:07,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 564 transitions. [2023-11-29 00:29:07,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7401574803149606 [2023-11-29 00:29:07,906 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 564 transitions. [2023-11-29 00:29:07,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 564 transitions. [2023-11-29 00:29:07,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:29:07,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 564 transitions. [2023-11-29 00:29:07,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 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 00:29:07,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 127.0) internal successors, (889), 7 states have internal predecessors, (889), 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 00:29:07,909 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 127.0) internal successors, (889), 7 states have internal predecessors, (889), 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 00:29:07,909 INFO L175 Difference]: Start difference. First operand has 139 places, 132 transitions, 553 flow. Second operand 6 states and 564 transitions. [2023-11-29 00:29:07,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 278 transitions, 1621 flow [2023-11-29 00:29:12,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 278 transitions, 1610 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-29 00:29:12,466 INFO L231 Difference]: Finished difference. Result has 143 places, 134 transitions, 599 flow [2023-11-29 00:29:12,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=599, PETRI_PLACES=143, PETRI_TRANSITIONS=134} [2023-11-29 00:29:12,467 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 23 predicate places. [2023-11-29 00:29:12,467 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 134 transitions, 599 flow [2023-11-29 00:29:12,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 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 00:29:12,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:29:12,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:12,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 00:29:12,467 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 00:29:12,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:12,467 INFO L85 PathProgramCache]: Analyzing trace with hash -512348546, now seen corresponding path program 1 times [2023-11-29 00:29:12,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:12,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322401035] [2023-11-29 00:29:12,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:12,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:12,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:12,546 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 00:29:12,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:12,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322401035] [2023-11-29 00:29:12,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322401035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:12,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:12,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:29:12,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089851261] [2023-11-29 00:29:12,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:12,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:29:12,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:12,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:29:12,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:29:12,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 127 [2023-11-29 00:29:12,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 134 transitions, 599 flow. Second operand has 5 states, 5 states have (on average 72.8) internal successors, (364), 5 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:12,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:29:12,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 127 [2023-11-29 00:29:12,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:29:22,127 INFO L124 PetriNetUnfolderBase]: 56156/93217 cut-off events. [2023-11-29 00:29:22,128 INFO L125 PetriNetUnfolderBase]: For 280530/291194 co-relation queries the response was YES. [2023-11-29 00:29:22,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281941 conditions, 93217 events. 56156/93217 cut-off events. For 280530/291194 co-relation queries the response was YES. Maximal size of possible extension queue 3174. Compared 886282 event pairs, 14106 based on Foata normal form. 7270/94369 useless extension candidates. Maximal degree in co-relation 258970. Up to 39734 conditions per place. [2023-11-29 00:29:22,829 INFO L140 encePairwiseOnDemand]: 116/127 looper letters, 141 selfloop transitions, 12 changer transitions 0/215 dead transitions. [2023-11-29 00:29:22,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 215 transitions, 1403 flow [2023-11-29 00:29:22,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:29:22,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:29:22,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 468 transitions. [2023-11-29 00:29:22,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7370078740157481 [2023-11-29 00:29:22,832 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 468 transitions. [2023-11-29 00:29:22,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 468 transitions. [2023-11-29 00:29:22,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:29:22,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 468 transitions. [2023-11-29 00:29:22,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.6) internal successors, (468), 5 states have internal predecessors, (468), 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 00:29:22,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 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 00:29:22,834 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 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 00:29:22,835 INFO L175 Difference]: Start difference. First operand has 143 places, 134 transitions, 599 flow. Second operand 5 states and 468 transitions. [2023-11-29 00:29:22,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 215 transitions, 1403 flow [2023-11-29 00:29:23,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 215 transitions, 1298 flow, removed 18 selfloop flow, removed 6 redundant places. [2023-11-29 00:29:23,820 INFO L231 Difference]: Finished difference. Result has 142 places, 134 transitions, 604 flow [2023-11-29 00:29:23,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=604, PETRI_PLACES=142, PETRI_TRANSITIONS=134} [2023-11-29 00:29:23,821 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 22 predicate places. [2023-11-29 00:29:23,821 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 134 transitions, 604 flow [2023-11-29 00:29:23,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.8) internal successors, (364), 5 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:23,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:29:23,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:23,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 00:29:23,822 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 00:29:23,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:23,823 INFO L85 PathProgramCache]: Analyzing trace with hash -512347521, now seen corresponding path program 1 times [2023-11-29 00:29:23,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:23,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533992811] [2023-11-29 00:29:23,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:23,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:23,875 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 00:29:23,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:23,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533992811] [2023-11-29 00:29:23,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533992811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:23,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:23,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:29:23,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229250663] [2023-11-29 00:29:23,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:23,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:29:23,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:23,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:29:23,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:29:23,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 127 [2023-11-29 00:29:23,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 134 transitions, 604 flow. Second operand has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 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 00:29:23,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:29:23,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 127 [2023-11-29 00:29:23,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:29:31,727 INFO L124 PetriNetUnfolderBase]: 42537/77665 cut-off events. [2023-11-29 00:29:31,728 INFO L125 PetriNetUnfolderBase]: For 182928/190861 co-relation queries the response was YES. [2023-11-29 00:29:31,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225475 conditions, 77665 events. 42537/77665 cut-off events. For 182928/190861 co-relation queries the response was YES. Maximal size of possible extension queue 2815. Compared 808389 event pairs, 13101 based on Foata normal form. 6699/78799 useless extension candidates. Maximal degree in co-relation 206889. Up to 23461 conditions per place. [2023-11-29 00:29:32,269 INFO L140 encePairwiseOnDemand]: 118/127 looper letters, 143 selfloop transitions, 9 changer transitions 0/214 dead transitions. [2023-11-29 00:29:32,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 214 transitions, 1332 flow [2023-11-29 00:29:32,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:29:32,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:29:32,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 390 transitions. [2023-11-29 00:29:32,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7677165354330708 [2023-11-29 00:29:32,271 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 390 transitions. [2023-11-29 00:29:32,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 390 transitions. [2023-11-29 00:29:32,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:29:32,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 390 transitions. [2023-11-29 00:29:32,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 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 00:29:32,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 00:29:32,274 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 00:29:32,274 INFO L175 Difference]: Start difference. First operand has 142 places, 134 transitions, 604 flow. Second operand 4 states and 390 transitions. [2023-11-29 00:29:32,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 214 transitions, 1332 flow [2023-11-29 00:29:33,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 214 transitions, 1322 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:29:33,956 INFO L231 Difference]: Finished difference. Result has 143 places, 132 transitions, 600 flow [2023-11-29 00:29:33,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=600, PETRI_PLACES=143, PETRI_TRANSITIONS=132} [2023-11-29 00:29:33,957 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 23 predicate places. [2023-11-29 00:29:33,957 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 132 transitions, 600 flow [2023-11-29 00:29:33,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 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 00:29:33,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:29:33,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:33,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 00:29:33,958 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 00:29:33,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:33,958 INFO L85 PathProgramCache]: Analyzing trace with hash 2021586313, now seen corresponding path program 1 times [2023-11-29 00:29:33,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:33,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827408509] [2023-11-29 00:29:33,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:33,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:34,000 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 00:29:34,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:34,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827408509] [2023-11-29 00:29:34,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827408509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:34,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:34,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:29:34,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830514555] [2023-11-29 00:29:34,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:34,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:29:34,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:34,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:29:34,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:29:34,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 127 [2023-11-29 00:29:34,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 132 transitions, 600 flow. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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 00:29:34,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:29:34,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 127 [2023-11-29 00:29:34,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:29:41,281 INFO L124 PetriNetUnfolderBase]: 36773/71503 cut-off events. [2023-11-29 00:29:41,281 INFO L125 PetriNetUnfolderBase]: For 175573/182396 co-relation queries the response was YES. [2023-11-29 00:29:41,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203465 conditions, 71503 events. 36773/71503 cut-off events. For 175573/182396 co-relation queries the response was YES. Maximal size of possible extension queue 2683. Compared 785016 event pairs, 13486 based on Foata normal form. 4976/68949 useless extension candidates. Maximal degree in co-relation 186783. Up to 24254 conditions per place. [2023-11-29 00:29:41,873 INFO L140 encePairwiseOnDemand]: 120/127 looper letters, 101 selfloop transitions, 7 changer transitions 0/174 dead transitions. [2023-11-29 00:29:41,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 174 transitions, 1087 flow [2023-11-29 00:29:41,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:29:41,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:29:41,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2023-11-29 00:29:41,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7421259842519685 [2023-11-29 00:29:41,875 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2023-11-29 00:29:41,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2023-11-29 00:29:41,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:29:41,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2023-11-29 00:29:41,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 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 00:29:41,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 00:29:41,877 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 00:29:41,877 INFO L175 Difference]: Start difference. First operand has 143 places, 132 transitions, 600 flow. Second operand 4 states and 377 transitions. [2023-11-29 00:29:41,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 174 transitions, 1087 flow [2023-11-29 00:29:43,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 174 transitions, 1075 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:29:43,494 INFO L231 Difference]: Finished difference. Result has 145 places, 132 transitions, 617 flow [2023-11-29 00:29:43,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=617, PETRI_PLACES=145, PETRI_TRANSITIONS=132} [2023-11-29 00:29:43,495 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 25 predicate places. [2023-11-29 00:29:43,495 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 132 transitions, 617 flow [2023-11-29 00:29:43,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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 00:29:43,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:29:43,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:43,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 00:29:43,496 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 00:29:43,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:43,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1297065312, now seen corresponding path program 1 times [2023-11-29 00:29:43,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:43,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291094771] [2023-11-29 00:29:43,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:43,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:43,561 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 00:29:43,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:43,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291094771] [2023-11-29 00:29:43,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291094771] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:43,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:43,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:29:43,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070140895] [2023-11-29 00:29:43,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:43,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:29:43,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:43,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:29:43,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:29:43,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 127 [2023-11-29 00:29:43,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 132 transitions, 617 flow. Second operand has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 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 00:29:43,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:29:43,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 127 [2023-11-29 00:29:43,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:29:54,511 INFO L124 PetriNetUnfolderBase]: 61329/99958 cut-off events. [2023-11-29 00:29:54,511 INFO L125 PetriNetUnfolderBase]: For 274854/287130 co-relation queries the response was YES. [2023-11-29 00:29:54,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307796 conditions, 99958 events. 61329/99958 cut-off events. For 274854/287130 co-relation queries the response was YES. Maximal size of possible extension queue 3419. Compared 940885 event pairs, 18267 based on Foata normal form. 10759/103667 useless extension candidates. Maximal degree in co-relation 282638. Up to 33124 conditions per place. [2023-11-29 00:29:55,458 INFO L140 encePairwiseOnDemand]: 114/127 looper letters, 268 selfloop transitions, 13 changer transitions 0/339 dead transitions. [2023-11-29 00:29:55,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 339 transitions, 2370 flow [2023-11-29 00:29:55,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:29:55,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 00:29:55,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 715 transitions. [2023-11-29 00:29:55,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7037401574803149 [2023-11-29 00:29:55,462 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 715 transitions. [2023-11-29 00:29:55,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 715 transitions. [2023-11-29 00:29:55,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:29:55,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 715 transitions. [2023-11-29 00:29:55,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 89.375) internal successors, (715), 8 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:55,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 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 00:29:55,467 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 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 00:29:55,467 INFO L175 Difference]: Start difference. First operand has 145 places, 132 transitions, 617 flow. Second operand 8 states and 715 transitions. [2023-11-29 00:29:55,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 339 transitions, 2370 flow [2023-11-29 00:29:56,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 339 transitions, 2337 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:29:56,664 INFO L231 Difference]: Finished difference. Result has 153 places, 134 transitions, 666 flow [2023-11-29 00:29:56,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=666, PETRI_PLACES=153, PETRI_TRANSITIONS=134} [2023-11-29 00:29:56,665 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 33 predicate places. [2023-11-29 00:29:56,665 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 134 transitions, 666 flow [2023-11-29 00:29:56,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 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 00:29:56,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:29:56,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:56,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 00:29:56,666 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 00:29:56,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:56,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1755364427, now seen corresponding path program 1 times [2023-11-29 00:29:56,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:56,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387854491] [2023-11-29 00:29:56,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:56,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:56,707 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 00:29:56,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:56,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387854491] [2023-11-29 00:29:56,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387854491] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:56,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:56,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:29:56,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687624520] [2023-11-29 00:29:56,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:56,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:29:56,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:56,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:29:56,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:29:56,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 127 [2023-11-29 00:29:56,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 134 transitions, 666 flow. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 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 00:29:56,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:29:56,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 127 [2023-11-29 00:29:56,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:30:04,459 INFO L124 PetriNetUnfolderBase]: 38971/73076 cut-off events. [2023-11-29 00:30:04,459 INFO L125 PetriNetUnfolderBase]: For 248047/258171 co-relation queries the response was YES. [2023-11-29 00:30:04,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228928 conditions, 73076 events. 38971/73076 cut-off events. For 248047/258171 co-relation queries the response was YES. Maximal size of possible extension queue 2711. Compared 778130 event pairs, 16402 based on Foata normal form. 8180/73955 useless extension candidates. Maximal degree in co-relation 210462. Up to 28971 conditions per place. [2023-11-29 00:30:05,041 INFO L140 encePairwiseOnDemand]: 121/127 looper letters, 107 selfloop transitions, 7 changer transitions 0/176 dead transitions. [2023-11-29 00:30:05,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 176 transitions, 1186 flow [2023-11-29 00:30:05,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:30:05,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:30:05,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 368 transitions. [2023-11-29 00:30:05,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7244094488188977 [2023-11-29 00:30:05,044 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 368 transitions. [2023-11-29 00:30:05,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 368 transitions. [2023-11-29 00:30:05,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:30:05,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 368 transitions. [2023-11-29 00:30:05,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 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 00:30:05,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 00:30:05,046 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 00:30:05,046 INFO L175 Difference]: Start difference. First operand has 153 places, 134 transitions, 666 flow. Second operand 4 states and 368 transitions. [2023-11-29 00:30:05,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 176 transitions, 1186 flow [2023-11-29 00:30:06,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 176 transitions, 1167 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-29 00:30:06,684 INFO L231 Difference]: Finished difference. Result has 152 places, 133 transitions, 665 flow [2023-11-29 00:30:06,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=665, PETRI_PLACES=152, PETRI_TRANSITIONS=133} [2023-11-29 00:30:06,685 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 32 predicate places. [2023-11-29 00:30:06,685 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 133 transitions, 665 flow [2023-11-29 00:30:06,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 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 00:30:06,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:30:06,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:30:06,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 00:30:06,686 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 00:30:06,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:06,686 INFO L85 PathProgramCache]: Analyzing trace with hash 313297706, now seen corresponding path program 1 times [2023-11-29 00:30:06,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:06,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655787902] [2023-11-29 00:30:06,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:06,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:06,726 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 00:30:06,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:06,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655787902] [2023-11-29 00:30:06,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655787902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:30:06,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:30:06,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:30:06,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203431377] [2023-11-29 00:30:06,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:30:06,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:30:06,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:06,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:30:06,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:30:06,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 127 [2023-11-29 00:30:06,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 133 transitions, 665 flow. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 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 00:30:06,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:30:06,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 127 [2023-11-29 00:30:06,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:30:14,201 INFO L124 PetriNetUnfolderBase]: 35886/66382 cut-off events. [2023-11-29 00:30:14,202 INFO L125 PetriNetUnfolderBase]: For 210455/219402 co-relation queries the response was YES. [2023-11-29 00:30:14,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221225 conditions, 66382 events. 35886/66382 cut-off events. For 210455/219402 co-relation queries the response was YES. Maximal size of possible extension queue 2505. Compared 687043 event pairs, 11883 based on Foata normal form. 6529/69815 useless extension candidates. Maximal degree in co-relation 202414. Up to 26921 conditions per place. [2023-11-29 00:30:14,762 INFO L140 encePairwiseOnDemand]: 122/127 looper letters, 99 selfloop transitions, 7 changer transitions 0/172 dead transitions. [2023-11-29 00:30:14,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 172 transitions, 1124 flow [2023-11-29 00:30:14,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:30:14,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:30:14,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2023-11-29 00:30:14,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7381889763779528 [2023-11-29 00:30:14,764 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2023-11-29 00:30:14,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2023-11-29 00:30:14,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:30:14,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2023-11-29 00:30:14,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 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 00:30:14,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 00:30:14,767 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 00:30:14,768 INFO L175 Difference]: Start difference. First operand has 152 places, 133 transitions, 665 flow. Second operand 4 states and 375 transitions. [2023-11-29 00:30:14,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 172 transitions, 1124 flow [2023-11-29 00:30:18,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 172 transitions, 1104 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 00:30:18,260 INFO L231 Difference]: Finished difference. Result has 152 places, 133 transitions, 685 flow [2023-11-29 00:30:18,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=685, PETRI_PLACES=152, PETRI_TRANSITIONS=133} [2023-11-29 00:30:18,260 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 32 predicate places. [2023-11-29 00:30:18,260 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 133 transitions, 685 flow [2023-11-29 00:30:18,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 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 00:30:18,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:30:18,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:30:18,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 00:30:18,261 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 00:30:18,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:18,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1793330140, now seen corresponding path program 1 times [2023-11-29 00:30:18,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:18,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035482518] [2023-11-29 00:30:18,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:18,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:18,308 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 00:30:18,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:18,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035482518] [2023-11-29 00:30:18,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035482518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:30:18,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:30:18,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:30:18,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293411960] [2023-11-29 00:30:18,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:30:18,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:30:18,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:18,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:30:18,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:30:18,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 127 [2023-11-29 00:30:18,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 133 transitions, 685 flow. Second operand has 5 states, 5 states have (on average 67.0) internal successors, (335), 5 states have internal predecessors, (335), 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 00:30:18,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:30:18,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 127 [2023-11-29 00:30:18,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:30:28,473 INFO L124 PetriNetUnfolderBase]: 56949/91442 cut-off events. [2023-11-29 00:30:28,473 INFO L125 PetriNetUnfolderBase]: For 329757/339303 co-relation queries the response was YES. [2023-11-29 00:30:28,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316107 conditions, 91442 events. 56949/91442 cut-off events. For 329757/339303 co-relation queries the response was YES. Maximal size of possible extension queue 3112. Compared 836827 event pairs, 18477 based on Foata normal form. 8569/96587 useless extension candidates. Maximal degree in co-relation 293339. Up to 32303 conditions per place. [2023-11-29 00:30:29,185 INFO L140 encePairwiseOnDemand]: 114/127 looper letters, 232 selfloop transitions, 16 changer transitions 0/303 dead transitions. [2023-11-29 00:30:29,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 303 transitions, 2245 flow [2023-11-29 00:30:29,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:30:29,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:30:29,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 564 transitions. [2023-11-29 00:30:29,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7401574803149606 [2023-11-29 00:30:29,187 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 564 transitions. [2023-11-29 00:30:29,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 564 transitions. [2023-11-29 00:30:29,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:30:29,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 564 transitions. [2023-11-29 00:30:29,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 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 00:30:29,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 127.0) internal successors, (889), 7 states have internal predecessors, (889), 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 00:30:29,191 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 127.0) internal successors, (889), 7 states have internal predecessors, (889), 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 00:30:29,191 INFO L175 Difference]: Start difference. First operand has 152 places, 133 transitions, 685 flow. Second operand 6 states and 564 transitions. [2023-11-29 00:30:29,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 303 transitions, 2245 flow [2023-11-29 00:30:35,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 303 transitions, 2203 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-29 00:30:35,927 INFO L231 Difference]: Finished difference. Result has 154 places, 135 transitions, 724 flow [2023-11-29 00:30:35,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=724, PETRI_PLACES=154, PETRI_TRANSITIONS=135} [2023-11-29 00:30:35,927 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 34 predicate places. [2023-11-29 00:30:35,927 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 135 transitions, 724 flow [2023-11-29 00:30:35,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.0) internal successors, (335), 5 states have internal predecessors, (335), 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 00:30:35,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:30:35,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:30:35,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 00:30:35,928 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 00:30:35,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:35,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1418277675, now seen corresponding path program 1 times [2023-11-29 00:30:35,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:35,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579759273] [2023-11-29 00:30:35,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:35,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:35,985 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 00:30:35,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:35,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579759273] [2023-11-29 00:30:35,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579759273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:30:35,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:30:35,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:30:35,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465365033] [2023-11-29 00:30:35,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:30:35,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:30:35,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:35,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:30:35,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:30:36,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 127 [2023-11-29 00:30:36,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 135 transitions, 724 flow. Second operand has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 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 00:30:36,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:30:36,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 127 [2023-11-29 00:30:36,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:30:46,684 INFO L124 PetriNetUnfolderBase]: 62181/97503 cut-off events. [2023-11-29 00:30:46,684 INFO L125 PetriNetUnfolderBase]: For 477787/493153 co-relation queries the response was YES. [2023-11-29 00:30:47,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356435 conditions, 97503 events. 62181/97503 cut-off events. For 477787/493153 co-relation queries the response was YES. Maximal size of possible extension queue 3302. Compared 871865 event pairs, 15821 based on Foata normal form. 11588/104867 useless extension candidates. Maximal degree in co-relation 329661. Up to 42536 conditions per place. [2023-11-29 00:30:47,490 INFO L140 encePairwiseOnDemand]: 116/127 looper letters, 159 selfloop transitions, 12 changer transitions 0/228 dead transitions. [2023-11-29 00:30:47,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 228 transitions, 1766 flow [2023-11-29 00:30:47,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:30:47,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:30:47,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 468 transitions. [2023-11-29 00:30:47,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7370078740157481 [2023-11-29 00:30:47,492 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 468 transitions. [2023-11-29 00:30:47,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 468 transitions. [2023-11-29 00:30:47,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:30:47,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 468 transitions. [2023-11-29 00:30:47,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.6) internal successors, (468), 5 states have internal predecessors, (468), 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 00:30:47,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 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 00:30:47,496 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 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 00:30:47,496 INFO L175 Difference]: Start difference. First operand has 154 places, 135 transitions, 724 flow. Second operand 5 states and 468 transitions. [2023-11-29 00:30:47,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 228 transitions, 1766 flow [2023-11-29 00:30:49,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 228 transitions, 1661 flow, removed 18 selfloop flow, removed 6 redundant places. [2023-11-29 00:30:49,973 INFO L231 Difference]: Finished difference. Result has 153 places, 135 transitions, 729 flow [2023-11-29 00:30:49,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=729, PETRI_PLACES=153, PETRI_TRANSITIONS=135} [2023-11-29 00:30:49,973 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 33 predicate places. [2023-11-29 00:30:49,973 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 135 transitions, 729 flow [2023-11-29 00:30:49,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 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 00:30:49,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:30:49,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:30:49,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 00:30:49,974 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 00:30:49,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:49,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1418278700, now seen corresponding path program 1 times [2023-11-29 00:30:49,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:49,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358092493] [2023-11-29 00:30:49,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:49,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:50,005 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 00:30:50,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:50,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358092493] [2023-11-29 00:30:50,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358092493] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:30:50,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:30:50,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:30:50,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752740284] [2023-11-29 00:30:50,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:30:50,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:30:50,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:50,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:30:50,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:30:50,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 127 [2023-11-29 00:30:50,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 135 transitions, 729 flow. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 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 00:30:50,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:30:50,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 127 [2023-11-29 00:30:50,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:30:59,065 INFO L124 PetriNetUnfolderBase]: 47005/82035 cut-off events. [2023-11-29 00:30:59,065 INFO L125 PetriNetUnfolderBase]: For 328066/339090 co-relation queries the response was YES. [2023-11-29 00:30:59,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283367 conditions, 82035 events. 47005/82035 cut-off events. For 328066/339090 co-relation queries the response was YES. Maximal size of possible extension queue 2920. Compared 819590 event pairs, 15821 based on Foata normal form. 9944/88554 useless extension candidates. Maximal degree in co-relation 261574. Up to 27415 conditions per place. [2023-11-29 00:30:59,691 INFO L140 encePairwiseOnDemand]: 118/127 looper letters, 161 selfloop transitions, 9 changer transitions 0/227 dead transitions. [2023-11-29 00:30:59,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 227 transitions, 1695 flow [2023-11-29 00:30:59,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:30:59,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:30:59,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 390 transitions. [2023-11-29 00:30:59,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7677165354330708 [2023-11-29 00:30:59,693 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 390 transitions. [2023-11-29 00:30:59,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 390 transitions. [2023-11-29 00:30:59,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:30:59,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 390 transitions. [2023-11-29 00:30:59,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 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 00:30:59,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 00:30:59,696 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 00:30:59,697 INFO L175 Difference]: Start difference. First operand has 153 places, 135 transitions, 729 flow. Second operand 4 states and 390 transitions. [2023-11-29 00:30:59,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 227 transitions, 1695 flow [2023-11-29 00:31:02,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 227 transitions, 1685 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:31:02,605 INFO L231 Difference]: Finished difference. Result has 154 places, 133 transitions, 725 flow [2023-11-29 00:31:02,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=725, PETRI_PLACES=154, PETRI_TRANSITIONS=133} [2023-11-29 00:31:02,606 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 34 predicate places. [2023-11-29 00:31:02,606 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 133 transitions, 725 flow [2023-11-29 00:31:02,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 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 00:31:02,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:31:02,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:31:02,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 00:31:02,607 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 00:31:02,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:31:02,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1122263548, now seen corresponding path program 1 times [2023-11-29 00:31:02,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:31:02,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956923951] [2023-11-29 00:31:02,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:02,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:31:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:31:02,646 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 00:31:02,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:31:02,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956923951] [2023-11-29 00:31:02,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956923951] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:31:02,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:31:02,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:31:02,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902173351] [2023-11-29 00:31:02,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:31:02,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:31:02,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:31:02,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:31:02,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:31:02,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 127 [2023-11-29 00:31:02,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 133 transitions, 725 flow. Second operand has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 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 00:31:02,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:31:02,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 127 [2023-11-29 00:31:02,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand