./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/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_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/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_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/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 48ddce9ee02b3ea4431cf137593b71facb450c3e223dbff4f116c3c0ac1377b5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 20:34:56,810 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 20:34:56,868 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-28 20:34:56,872 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 20:34:56,873 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 20:34:56,893 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 20:34:56,893 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 20:34:56,894 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 20:34:56,894 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 20:34:56,895 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 20:34:56,895 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 20:34:56,896 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 20:34:56,896 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 20:34:56,897 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 20:34:56,897 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 20:34:56,898 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 20:34:56,898 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 20:34:56,899 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 20:34:56,899 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 20:34:56,900 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 20:34:56,900 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 20:34:56,901 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 20:34:56,901 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 20:34:56,902 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 20:34:56,902 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-28 20:34:56,903 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 20:34:56,903 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 20:34:56,904 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 20:34:56,904 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 20:34:56,905 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 20:34:56,905 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 20:34:56,905 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 20:34:56,906 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 20:34:56,906 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:34:56,906 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 20:34:56,907 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 20:34:56,907 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 20:34:56,907 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 20:34:56,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 20:34:56,907 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 20:34:56,907 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 20:34:56,908 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 20:34:56,908 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 20:34:56,908 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 20:34:56,908 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_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48ddce9ee02b3ea4431cf137593b71facb450c3e223dbff4f116c3c0ac1377b5 [2023-11-28 20:34:57,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 20:34:57,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 20:34:57,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 20:34:57,138 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 20:34:57,139 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 20:34:57,140 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2023-11-28 20:34:59,858 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 20:35:00,034 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 20:35:00,034 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2023-11-28 20:35:00,043 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/data/f3dba0441/2f5de1e4ae7344f3ab558f5deedee175/FLAGfed86058f [2023-11-28 20:35:00,054 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/data/f3dba0441/2f5de1e4ae7344f3ab558f5deedee175 [2023-11-28 20:35:00,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 20:35:00,059 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 20:35:00,060 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 20:35:00,060 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 20:35:00,064 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 20:35:00,065 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:35:00" (1/1) ... [2023-11-28 20:35:00,065 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ca43aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:35:00, skipping insertion in model container [2023-11-28 20:35:00,066 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:35:00" (1/1) ... [2023-11-28 20:35:00,089 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 20:35:00,260 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:35:00,270 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 20:35:00,307 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:35:00,322 INFO L206 MainTranslator]: Completed translation [2023-11-28 20:35:00,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:35:00 WrapperNode [2023-11-28 20:35:00,322 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 20:35:00,323 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 20:35:00,324 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 20:35:00,324 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 20:35:00,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:35:00" (1/1) ... [2023-11-28 20:35:00,340 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:35:00" (1/1) ... [2023-11-28 20:35:00,381 INFO L138 Inliner]: procedures = 25, calls = 56, calls flagged for inlining = 22, calls inlined = 30, statements flattened = 501 [2023-11-28 20:35:00,382 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 20:35:00,383 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 20:35:00,383 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 20:35:00,383 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 20:35:00,392 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:35:00" (1/1) ... [2023-11-28 20:35:00,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:35:00" (1/1) ... [2023-11-28 20:35:00,398 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:35:00" (1/1) ... [2023-11-28 20:35:00,419 INFO L175 MemorySlicer]: Split 24 memory accesses to 4 slices as follows [2, 2, 18, 2]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 4 writes are split as follows [0, 1, 2, 1]. [2023-11-28 20:35:00,419 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:35:00" (1/1) ... [2023-11-28 20:35:00,419 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:35:00" (1/1) ... [2023-11-28 20:35:00,435 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:35:00" (1/1) ... [2023-11-28 20:35:00,442 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:35:00" (1/1) ... [2023-11-28 20:35:00,445 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:35:00" (1/1) ... [2023-11-28 20:35:00,448 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:35:00" (1/1) ... [2023-11-28 20:35:00,454 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 20:35:00,455 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 20:35:00,455 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 20:35:00,455 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 20:35:00,456 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:35:00" (1/1) ... [2023-11-28 20:35:00,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:35:00,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:35:00,480 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 20:35:00,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 20:35:00,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 20:35:00,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 20:35:00,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-28 20:35:00,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-28 20:35:00,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-28 20:35:00,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-28 20:35:00,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-28 20:35:00,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-28 20:35:00,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-28 20:35:00,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-28 20:35:00,514 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-28 20:35:00,514 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-28 20:35:00,515 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-28 20:35:00,515 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-28 20:35:00,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 20:35:00,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-28 20:35:00,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-28 20:35:00,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-28 20:35:00,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-28 20:35:00,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 20:35:00,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 20:35:00,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 20:35:00,518 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-28 20:35:00,644 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 20:35:00,645 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 20:35:01,275 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 20:35:01,734 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 20:35:01,734 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-28 20:35:01,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:35:01 BoogieIcfgContainer [2023-11-28 20:35:01,734 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 20:35:01,736 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 20:35:01,736 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 20:35:01,739 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 20:35:01,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:35:00" (1/3) ... [2023-11-28 20:35:01,739 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bf8302e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:35:01, skipping insertion in model container [2023-11-28 20:35:01,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:35:00" (2/3) ... [2023-11-28 20:35:01,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bf8302e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:35:01, skipping insertion in model container [2023-11-28 20:35:01,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:35:01" (3/3) ... [2023-11-28 20:35:01,741 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2023-11-28 20:35:01,748 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-28 20:35:01,756 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 20:35:01,756 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-11-28 20:35:01,756 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-28 20:35:01,866 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-28 20:35:01,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 171 transitions, 356 flow [2023-11-28 20:35:01,949 INFO L124 PetriNetUnfolderBase]: 26/169 cut-off events. [2023-11-28 20:35:01,949 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-28 20:35:01,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 169 events. 26/169 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 837 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 149. Up to 2 conditions per place. [2023-11-28 20:35:01,955 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 171 transitions, 356 flow [2023-11-28 20:35:01,962 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 168 transitions, 348 flow [2023-11-28 20:35:01,971 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 20:35:01,976 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;@52d92cf3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 20:35:01,976 INFO L358 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2023-11-28 20:35:01,979 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 20:35:01,979 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-28 20:35:01,979 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 20:35:01,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:35:01,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-28 20:35:01,980 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:35:01,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:35:01,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1507955, now seen corresponding path program 1 times [2023-11-28 20:35:01,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:35:01,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348658800] [2023-11-28 20:35:01,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:01,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:35:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:02,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:35:02,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:35:02,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348658800] [2023-11-28 20:35:02,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348658800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:35:02,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:35:02,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:35:02,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954926904] [2023-11-28 20:35:02,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:35:02,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:35:02,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:35:02,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:35:02,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:35:02,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 171 [2023-11-28 20:35:02,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 168 transitions, 348 flow. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:02,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:35:02,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 171 [2023-11-28 20:35:02,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:35:03,148 INFO L124 PetriNetUnfolderBase]: 2727/6183 cut-off events. [2023-11-28 20:35:03,149 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-11-28 20:35:03,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10205 conditions, 6183 events. 2727/6183 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 55993 event pairs, 1685 based on Foata normal form. 100/4993 useless extension candidates. Maximal degree in co-relation 9884. Up to 3943 conditions per place. [2023-11-28 20:35:03,188 INFO L140 encePairwiseOnDemand]: 156/171 looper letters, 78 selfloop transitions, 7 changer transitions 3/170 dead transitions. [2023-11-28 20:35:03,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 170 transitions, 524 flow [2023-11-28 20:35:03,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:35:03,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:35:03,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 438 transitions. [2023-11-28 20:35:03,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6403508771929824 [2023-11-28 20:35:03,203 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 438 transitions. [2023-11-28 20:35:03,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 438 transitions. [2023-11-28 20:35:03,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:35:03,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 438 transitions. [2023-11-28 20:35:03,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:03,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:03,216 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:03,217 INFO L175 Difference]: Start difference. First operand has 149 places, 168 transitions, 348 flow. Second operand 4 states and 438 transitions. [2023-11-28 20:35:03,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 170 transitions, 524 flow [2023-11-28 20:35:03,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 170 transitions, 516 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-28 20:35:03,227 INFO L231 Difference]: Finished difference. Result has 149 places, 167 transitions, 385 flow [2023-11-28 20:35:03,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=385, PETRI_PLACES=149, PETRI_TRANSITIONS=167} [2023-11-28 20:35:03,231 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 0 predicate places. [2023-11-28 20:35:03,232 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 167 transitions, 385 flow [2023-11-28 20:35:03,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:03,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:35:03,232 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-28 20:35:03,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 20:35:03,233 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:35:03,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:35:03,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1975311829, now seen corresponding path program 1 times [2023-11-28 20:35:03,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:35:03,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347790158] [2023-11-28 20:35:03,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:03,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:35:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:03,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:35:03,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:35:03,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347790158] [2023-11-28 20:35:03,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347790158] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:35:03,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812283188] [2023-11-28 20:35:03,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:03,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:35:03,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:35:03,383 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:35:03,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 20:35:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:03,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:35:03,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:35:03,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:35:03,552 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:35:03,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812283188] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:35:03,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:35:03,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-28 20:35:03,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161807442] [2023-11-28 20:35:03,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:35:03,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:35:03,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:35:03,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:35:03,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-28 20:35:03,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 171 [2023-11-28 20:35:03,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 167 transitions, 385 flow. Second operand has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:03,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:35:03,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 171 [2023-11-28 20:35:03,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:35:04,374 INFO L124 PetriNetUnfolderBase]: 2727/6178 cut-off events. [2023-11-28 20:35:04,375 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-28 20:35:04,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10172 conditions, 6178 events. 2727/6178 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 55929 event pairs, 1685 based on Foata normal form. 2/4893 useless extension candidates. Maximal degree in co-relation 10122. Up to 3932 conditions per place. [2023-11-28 20:35:04,423 INFO L140 encePairwiseOnDemand]: 162/171 looper letters, 71 selfloop transitions, 12 changer transitions 0/165 dead transitions. [2023-11-28 20:35:04,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 165 transitions, 543 flow [2023-11-28 20:35:04,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:35:04,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 20:35:04,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 601 transitions. [2023-11-28 20:35:04,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5857699805068226 [2023-11-28 20:35:04,428 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 601 transitions. [2023-11-28 20:35:04,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 601 transitions. [2023-11-28 20:35:04,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:35:04,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 601 transitions. [2023-11-28 20:35:04,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.16666666666667) internal successors, (601), 6 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:04,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:04,436 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:04,436 INFO L175 Difference]: Start difference. First operand has 149 places, 167 transitions, 385 flow. Second operand 6 states and 601 transitions. [2023-11-28 20:35:04,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 165 transitions, 543 flow [2023-11-28 20:35:04,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 165 transitions, 543 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-28 20:35:04,442 INFO L231 Difference]: Finished difference. Result has 149 places, 165 transitions, 401 flow [2023-11-28 20:35:04,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=401, PETRI_PLACES=149, PETRI_TRANSITIONS=165} [2023-11-28 20:35:04,443 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 0 predicate places. [2023-11-28 20:35:04,443 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 165 transitions, 401 flow [2023-11-28 20:35:04,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:04,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:35:04,444 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-28 20:35:04,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 20:35:04,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:35:04,650 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:35:04,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:35:04,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1105126060, now seen corresponding path program 1 times [2023-11-28 20:35:04,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:35:04,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865688338] [2023-11-28 20:35:04,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:04,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:35:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:04,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:35:04,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:35:04,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865688338] [2023-11-28 20:35:04,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865688338] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:35:04,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699472605] [2023-11-28 20:35:04,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:04,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:35:04,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:35:04,739 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:35:04,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 20:35:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:04,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:35:04,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:35:04,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:35:04,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:35:04,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:35:04,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699472605] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:35:04,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:35:04,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-28 20:35:04,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648344157] [2023-11-28 20:35:04,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:35:04,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 20:35:04,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:35:04,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 20:35:04,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-28 20:35:04,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 171 [2023-11-28 20:35:04,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 165 transitions, 401 flow. Second operand has 12 states, 12 states have (on average 87.08333333333333) internal successors, (1045), 12 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:04,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:35:04,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 171 [2023-11-28 20:35:04,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:35:05,797 INFO L124 PetriNetUnfolderBase]: 2733/6202 cut-off events. [2023-11-28 20:35:05,797 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-11-28 20:35:05,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10266 conditions, 6202 events. 2733/6202 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 56290 event pairs, 1685 based on Foata normal form. 6/4920 useless extension candidates. Maximal degree in co-relation 10124. Up to 3943 conditions per place. [2023-11-28 20:35:05,834 INFO L140 encePairwiseOnDemand]: 162/171 looper letters, 76 selfloop transitions, 25 changer transitions 0/183 dead transitions. [2023-11-28 20:35:05,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 183 transitions, 717 flow [2023-11-28 20:35:05,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 20:35:05,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-28 20:35:05,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 967 transitions. [2023-11-28 20:35:05,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5654970760233918 [2023-11-28 20:35:05,838 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 967 transitions. [2023-11-28 20:35:05,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 967 transitions. [2023-11-28 20:35:05,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:35:05,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 967 transitions. [2023-11-28 20:35:05,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 96.7) internal successors, (967), 10 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:05,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 171.0) internal successors, (1881), 11 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:05,878 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 171.0) internal successors, (1881), 11 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:05,878 INFO L175 Difference]: Start difference. First operand has 149 places, 165 transitions, 401 flow. Second operand 10 states and 967 transitions. [2023-11-28 20:35:05,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 183 transitions, 717 flow [2023-11-28 20:35:05,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 183 transitions, 659 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-11-28 20:35:05,884 INFO L231 Difference]: Finished difference. Result has 156 places, 183 transitions, 541 flow [2023-11-28 20:35:05,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=541, PETRI_PLACES=156, PETRI_TRANSITIONS=183} [2023-11-28 20:35:05,885 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 7 predicate places. [2023-11-28 20:35:05,885 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 183 transitions, 541 flow [2023-11-28 20:35:05,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 87.08333333333333) internal successors, (1045), 12 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:05,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:35:05,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:35:05,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 20:35:06,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:35:06,088 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:35:06,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:35:06,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1564540902, now seen corresponding path program 1 times [2023-11-28 20:35:06,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:35:06,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743506995] [2023-11-28 20:35:06,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:06,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:35:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:06,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:35:06,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:35:06,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743506995] [2023-11-28 20:35:06,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743506995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:35:06,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:35:06,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:35:06,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149662759] [2023-11-28 20:35:06,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:35:06,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:35:06,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:35:06,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:35:06,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:35:06,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 171 [2023-11-28 20:35:06,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 183 transitions, 541 flow. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:06,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:35:06,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 171 [2023-11-28 20:35:06,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:35:06,967 INFO L124 PetriNetUnfolderBase]: 2731/6200 cut-off events. [2023-11-28 20:35:06,967 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2023-11-28 20:35:06,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10271 conditions, 6200 events. 2731/6200 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 56057 event pairs, 1685 based on Foata normal form. 2/4916 useless extension candidates. Maximal degree in co-relation 10204. Up to 3952 conditions per place. [2023-11-28 20:35:07,003 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 90 selfloop transitions, 7 changer transitions 0/181 dead transitions. [2023-11-28 20:35:07,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 181 transitions, 725 flow [2023-11-28 20:35:07,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:35:07,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:35:07,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2023-11-28 20:35:07,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6842105263157895 [2023-11-28 20:35:07,006 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2023-11-28 20:35:07,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2023-11-28 20:35:07,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:35:07,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2023-11-28 20:35:07,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:07,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:07,009 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:07,010 INFO L175 Difference]: Start difference. First operand has 156 places, 183 transitions, 541 flow. Second operand 3 states and 351 transitions. [2023-11-28 20:35:07,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 181 transitions, 725 flow [2023-11-28 20:35:07,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 181 transitions, 695 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-28 20:35:07,016 INFO L231 Difference]: Finished difference. Result has 155 places, 181 transitions, 515 flow [2023-11-28 20:35:07,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=515, PETRI_PLACES=155, PETRI_TRANSITIONS=181} [2023-11-28 20:35:07,017 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 6 predicate places. [2023-11-28 20:35:07,017 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 181 transitions, 515 flow [2023-11-28 20:35:07,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:07,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:35:07,018 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-28 20:35:07,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-28 20:35:07,018 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:35:07,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:35:07,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1129203634, now seen corresponding path program 2 times [2023-11-28 20:35:07,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:35:07,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595364436] [2023-11-28 20:35:07,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:07,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:35:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:07,174 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:35:07,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:35:07,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595364436] [2023-11-28 20:35:07,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595364436] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:35:07,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662853523] [2023-11-28 20:35:07,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:35:07,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:35:07,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:35:07,176 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:35:07,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 20:35:07,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 20:35:07,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:35:07,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:35:07,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:35:07,320 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-28 20:35:07,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:35:07,372 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-28 20:35:07,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662853523] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:35:07,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:35:07,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 13 [2023-11-28 20:35:07,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983300816] [2023-11-28 20:35:07,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:35:07,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-28 20:35:07,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:35:07,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-28 20:35:07,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-28 20:35:07,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 171 [2023-11-28 20:35:07,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 181 transitions, 515 flow. Second operand has 15 states, 15 states have (on average 87.33333333333333) internal successors, (1310), 15 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:07,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:35:07,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 171 [2023-11-28 20:35:07,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:35:08,479 INFO L124 PetriNetUnfolderBase]: 2733/6202 cut-off events. [2023-11-28 20:35:08,479 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2023-11-28 20:35:08,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10266 conditions, 6202 events. 2733/6202 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 55950 event pairs, 1685 based on Foata normal form. 2/4918 useless extension candidates. Maximal degree in co-relation 10196. Up to 3935 conditions per place. [2023-11-28 20:35:08,515 INFO L140 encePairwiseOnDemand]: 162/171 looper letters, 68 selfloop transitions, 33 changer transitions 0/183 dead transitions. [2023-11-28 20:35:08,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 183 transitions, 721 flow [2023-11-28 20:35:08,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-28 20:35:08,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-28 20:35:08,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1221 transitions. [2023-11-28 20:35:08,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5492577597840755 [2023-11-28 20:35:08,521 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1221 transitions. [2023-11-28 20:35:08,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1221 transitions. [2023-11-28 20:35:08,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:35:08,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1221 transitions. [2023-11-28 20:35:08,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 93.92307692307692) internal successors, (1221), 13 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:08,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 171.0) internal successors, (2394), 14 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:08,531 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 171.0) internal successors, (2394), 14 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:08,531 INFO L175 Difference]: Start difference. First operand has 155 places, 181 transitions, 515 flow. Second operand 13 states and 1221 transitions. [2023-11-28 20:35:08,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 183 transitions, 721 flow [2023-11-28 20:35:08,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 183 transitions, 685 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-28 20:35:08,537 INFO L231 Difference]: Finished difference. Result has 159 places, 183 transitions, 549 flow [2023-11-28 20:35:08,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=549, PETRI_PLACES=159, PETRI_TRANSITIONS=183} [2023-11-28 20:35:08,538 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 10 predicate places. [2023-11-28 20:35:08,538 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 183 transitions, 549 flow [2023-11-28 20:35:08,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 87.33333333333333) internal successors, (1310), 15 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:08,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:35:08,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:35:08,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 20:35:08,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:35:08,740 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:35:08,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:35:08,740 INFO L85 PathProgramCache]: Analyzing trace with hash -337690398, now seen corresponding path program 1 times [2023-11-28 20:35:08,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:35:08,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745372352] [2023-11-28 20:35:08,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:08,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:35:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:08,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 20:35:08,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:35:08,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745372352] [2023-11-28 20:35:08,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745372352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:35:08,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:35:08,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:35:08,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395745713] [2023-11-28 20:35:08,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:35:08,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:35:08,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:35:08,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:35:08,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:35:08,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 171 [2023-11-28 20:35:08,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 183 transitions, 549 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:08,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:35:08,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 171 [2023-11-28 20:35:08,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:35:09,579 INFO L124 PetriNetUnfolderBase]: 3199/6902 cut-off events. [2023-11-28 20:35:09,579 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2023-11-28 20:35:09,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11727 conditions, 6902 events. 3199/6902 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 60792 event pairs, 1535 based on Foata normal form. 108/5507 useless extension candidates. Maximal degree in co-relation 11561. Up to 3510 conditions per place. [2023-11-28 20:35:09,624 INFO L140 encePairwiseOnDemand]: 164/171 looper letters, 136 selfloop transitions, 5 changer transitions 0/215 dead transitions. [2023-11-28 20:35:09,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 215 transitions, 896 flow [2023-11-28 20:35:09,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:35:09,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:35:09,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 445 transitions. [2023-11-28 20:35:09,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6505847953216374 [2023-11-28 20:35:09,628 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 445 transitions. [2023-11-28 20:35:09,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 445 transitions. [2023-11-28 20:35:09,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:35:09,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 445 transitions. [2023-11-28 20:35:09,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:09,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:09,633 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:09,633 INFO L175 Difference]: Start difference. First operand has 159 places, 183 transitions, 549 flow. Second operand 4 states and 445 transitions. [2023-11-28 20:35:09,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 215 transitions, 896 flow [2023-11-28 20:35:09,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 215 transitions, 776 flow, removed 8 selfloop flow, removed 12 redundant places. [2023-11-28 20:35:09,639 INFO L231 Difference]: Finished difference. Result has 148 places, 181 transitions, 435 flow [2023-11-28 20:35:09,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=435, PETRI_PLACES=148, PETRI_TRANSITIONS=181} [2023-11-28 20:35:09,640 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -1 predicate places. [2023-11-28 20:35:09,641 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 181 transitions, 435 flow [2023-11-28 20:35:09,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:09,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:35:09,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:35:09,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-28 20:35:09,641 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:35:09,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:35:09,642 INFO L85 PathProgramCache]: Analyzing trace with hash -336704348, now seen corresponding path program 1 times [2023-11-28 20:35:09,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:35:09,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495856203] [2023-11-28 20:35:09,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:09,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:35:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:09,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 20:35:09,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:35:09,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495856203] [2023-11-28 20:35:09,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495856203] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:35:09,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:35:09,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:35:09,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800052570] [2023-11-28 20:35:09,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:35:09,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:35:09,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:35:09,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:35:09,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:35:09,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 171 [2023-11-28 20:35:09,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 181 transitions, 435 flow. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:09,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:35:09,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 171 [2023-11-28 20:35:09,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:35:10,535 INFO L124 PetriNetUnfolderBase]: 4833/10380 cut-off events. [2023-11-28 20:35:10,535 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2023-11-28 20:35:10,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17819 conditions, 10380 events. 4833/10380 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 93256 event pairs, 2077 based on Foata normal form. 108/8662 useless extension candidates. Maximal degree in co-relation 15315. Up to 4523 conditions per place. [2023-11-28 20:35:10,581 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 158 selfloop transitions, 2 changer transitions 0/236 dead transitions. [2023-11-28 20:35:10,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 236 transitions, 867 flow [2023-11-28 20:35:10,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:35:10,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:35:10,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 396 transitions. [2023-11-28 20:35:10,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7719298245614035 [2023-11-28 20:35:10,583 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 396 transitions. [2023-11-28 20:35:10,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 396 transitions. [2023-11-28 20:35:10,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:35:10,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 396 transitions. [2023-11-28 20:35:10,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:10,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:10,585 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:10,585 INFO L175 Difference]: Start difference. First operand has 148 places, 181 transitions, 435 flow. Second operand 3 states and 396 transitions. [2023-11-28 20:35:10,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 236 transitions, 867 flow [2023-11-28 20:35:10,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 236 transitions, 857 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-28 20:35:10,603 INFO L231 Difference]: Finished difference. Result has 148 places, 182 transitions, 443 flow [2023-11-28 20:35:10,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=443, PETRI_PLACES=148, PETRI_TRANSITIONS=182} [2023-11-28 20:35:10,604 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, -1 predicate places. [2023-11-28 20:35:10,604 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 182 transitions, 443 flow [2023-11-28 20:35:10,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:10,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:35:10,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:35:10,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-28 20:35:10,605 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:35:10,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:35:10,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1878466070, now seen corresponding path program 1 times [2023-11-28 20:35:10,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:35:10,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673504262] [2023-11-28 20:35:10,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:10,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:35:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:10,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 20:35:10,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:35:10,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673504262] [2023-11-28 20:35:10,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673504262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:35:10,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:35:10,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:35:10,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187152989] [2023-11-28 20:35:10,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:35:10,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:35:10,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:35:10,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:35:10,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:35:10,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 171 [2023-11-28 20:35:10,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 182 transitions, 443 flow. Second operand has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:10,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:35:10,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 171 [2023-11-28 20:35:10,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:35:11,506 INFO L124 PetriNetUnfolderBase]: 5180/11517 cut-off events. [2023-11-28 20:35:11,506 INFO L125 PetriNetUnfolderBase]: For 270/270 co-relation queries the response was YES. [2023-11-28 20:35:11,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19585 conditions, 11517 events. 5180/11517 cut-off events. For 270/270 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 106942 event pairs, 2572 based on Foata normal form. 0/9447 useless extension candidates. Maximal degree in co-relation 7438. Up to 5861 conditions per place. [2023-11-28 20:35:11,598 INFO L140 encePairwiseOnDemand]: 163/171 looper letters, 134 selfloop transitions, 7 changer transitions 0/217 dead transitions. [2023-11-28 20:35:11,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 217 transitions, 796 flow [2023-11-28 20:35:11,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:35:11,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:35:11,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 451 transitions. [2023-11-28 20:35:11,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6593567251461988 [2023-11-28 20:35:11,601 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 451 transitions. [2023-11-28 20:35:11,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 451 transitions. [2023-11-28 20:35:11,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:35:11,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 451 transitions. [2023-11-28 20:35:11,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:11,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:11,605 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:11,605 INFO L175 Difference]: Start difference. First operand has 148 places, 182 transitions, 443 flow. Second operand 4 states and 451 transitions. [2023-11-28 20:35:11,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 217 transitions, 796 flow [2023-11-28 20:35:11,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 217 transitions, 794 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 20:35:11,612 INFO L231 Difference]: Finished difference. Result has 150 places, 182 transitions, 463 flow [2023-11-28 20:35:11,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=463, PETRI_PLACES=150, PETRI_TRANSITIONS=182} [2023-11-28 20:35:11,613 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 1 predicate places. [2023-11-28 20:35:11,613 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 182 transitions, 463 flow [2023-11-28 20:35:11,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:11,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:35:11,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:35:11,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-28 20:35:11,614 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:35:11,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:35:11,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1451355986, now seen corresponding path program 1 times [2023-11-28 20:35:11,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:35:11,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230272449] [2023-11-28 20:35:11,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:11,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:35:11,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:11,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 20:35:11,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:35:11,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230272449] [2023-11-28 20:35:11,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230272449] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:35:11,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:35:11,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:35:11,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702850837] [2023-11-28 20:35:11,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:35:11,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:35:11,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:35:11,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:35:11,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:35:11,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 171 [2023-11-28 20:35:11,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 182 transitions, 463 flow. Second operand has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:11,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:35:11,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 171 [2023-11-28 20:35:11,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:35:12,733 INFO L124 PetriNetUnfolderBase]: 5199/11340 cut-off events. [2023-11-28 20:35:12,733 INFO L125 PetriNetUnfolderBase]: For 1551/1551 co-relation queries the response was YES. [2023-11-28 20:35:12,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19934 conditions, 11340 events. 5199/11340 cut-off events. For 1551/1551 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 104394 event pairs, 2303 based on Foata normal form. 216/9578 useless extension candidates. Maximal degree in co-relation 15437. Up to 5262 conditions per place. [2023-11-28 20:35:12,777 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 135 selfloop transitions, 5 changer transitions 0/214 dead transitions. [2023-11-28 20:35:12,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 214 transitions, 802 flow [2023-11-28 20:35:12,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:35:12,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:35:12,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 442 transitions. [2023-11-28 20:35:12,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6461988304093568 [2023-11-28 20:35:12,779 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 442 transitions. [2023-11-28 20:35:12,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 442 transitions. [2023-11-28 20:35:12,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:35:12,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 442 transitions. [2023-11-28 20:35:12,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.5) internal successors, (442), 4 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:12,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:12,783 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:12,783 INFO L175 Difference]: Start difference. First operand has 150 places, 182 transitions, 463 flow. Second operand 4 states and 442 transitions. [2023-11-28 20:35:12,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 214 transitions, 802 flow [2023-11-28 20:35:12,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 214 transitions, 796 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:35:12,800 INFO L231 Difference]: Finished difference. Result has 149 places, 180 transitions, 457 flow [2023-11-28 20:35:12,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=457, PETRI_PLACES=149, PETRI_TRANSITIONS=180} [2023-11-28 20:35:12,801 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 0 predicate places. [2023-11-28 20:35:12,802 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 180 transitions, 457 flow [2023-11-28 20:35:12,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:12,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:35:12,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:35:12,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-28 20:35:12,802 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:35:12,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:35:12,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1780441404, now seen corresponding path program 1 times [2023-11-28 20:35:12,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:35:12,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057375657] [2023-11-28 20:35:12,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:12,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:35:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:12,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 20:35:12,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:35:12,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057375657] [2023-11-28 20:35:12,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057375657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:35:12,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:35:12,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:35:12,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682576976] [2023-11-28 20:35:12,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:35:12,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:35:12,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:35:12,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:35:12,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:35:12,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 171 [2023-11-28 20:35:12,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 180 transitions, 457 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:12,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:35:12,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 171 [2023-11-28 20:35:12,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:35:14,136 INFO L124 PetriNetUnfolderBase]: 8111/17552 cut-off events. [2023-11-28 20:35:14,137 INFO L125 PetriNetUnfolderBase]: For 1797/1797 co-relation queries the response was YES. [2023-11-28 20:35:14,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31159 conditions, 17552 events. 8111/17552 cut-off events. For 1797/1797 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 166760 event pairs, 3597 based on Foata normal form. 184/15128 useless extension candidates. Maximal degree in co-relation 23583. Up to 7877 conditions per place. [2023-11-28 20:35:14,192 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 160 selfloop transitions, 2 changer transitions 0/235 dead transitions. [2023-11-28 20:35:14,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 235 transitions, 914 flow [2023-11-28 20:35:14,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:35:14,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:35:14,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 394 transitions. [2023-11-28 20:35:14,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7680311890838206 [2023-11-28 20:35:14,194 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 394 transitions. [2023-11-28 20:35:14,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 394 transitions. [2023-11-28 20:35:14,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:35:14,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 394 transitions. [2023-11-28 20:35:14,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:14,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:14,196 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:14,196 INFO L175 Difference]: Start difference. First operand has 149 places, 180 transitions, 457 flow. Second operand 3 states and 394 transitions. [2023-11-28 20:35:14,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 235 transitions, 914 flow [2023-11-28 20:35:14,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 235 transitions, 898 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-28 20:35:14,212 INFO L231 Difference]: Finished difference. Result has 149 places, 181 transitions, 465 flow [2023-11-28 20:35:14,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=465, PETRI_PLACES=149, PETRI_TRANSITIONS=181} [2023-11-28 20:35:14,213 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 0 predicate places. [2023-11-28 20:35:14,213 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 181 transitions, 465 flow [2023-11-28 20:35:14,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:14,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:35:14,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:35:14,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-28 20:35:14,214 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:35:14,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:35:14,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1781427454, now seen corresponding path program 1 times [2023-11-28 20:35:14,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:35:14,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779967768] [2023-11-28 20:35:14,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:14,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:35:14,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:14,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 20:35:14,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:35:14,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779967768] [2023-11-28 20:35:14,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779967768] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:35:14,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:35:14,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:35:14,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871661235] [2023-11-28 20:35:14,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:35:14,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:35:14,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:35:14,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:35:14,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:35:14,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 171 [2023-11-28 20:35:14,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 181 transitions, 465 flow. Second operand has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:14,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:35:14,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 171 [2023-11-28 20:35:14,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:35:15,887 INFO L124 PetriNetUnfolderBase]: 8936/18507 cut-off events. [2023-11-28 20:35:15,887 INFO L125 PetriNetUnfolderBase]: For 1523/1523 co-relation queries the response was YES. [2023-11-28 20:35:15,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33687 conditions, 18507 events. 8936/18507 cut-off events. For 1523/1523 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 170334 event pairs, 4902 based on Foata normal form. 184/15861 useless extension candidates. Maximal degree in co-relation 25620. Up to 10723 conditions per place. [2023-11-28 20:35:15,965 INFO L140 encePairwiseOnDemand]: 164/171 looper letters, 141 selfloop transitions, 5 changer transitions 0/215 dead transitions. [2023-11-28 20:35:15,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 215 transitions, 842 flow [2023-11-28 20:35:15,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:35:15,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:35:15,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 445 transitions. [2023-11-28 20:35:15,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6505847953216374 [2023-11-28 20:35:15,967 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 445 transitions. [2023-11-28 20:35:15,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 445 transitions. [2023-11-28 20:35:15,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:35:15,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 445 transitions. [2023-11-28 20:35:15,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:15,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:15,972 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:15,972 INFO L175 Difference]: Start difference. First operand has 149 places, 181 transitions, 465 flow. Second operand 4 states and 445 transitions. [2023-11-28 20:35:15,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 215 transitions, 842 flow [2023-11-28 20:35:15,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 215 transitions, 840 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 20:35:15,992 INFO L231 Difference]: Finished difference. Result has 149 places, 179 transitions, 469 flow [2023-11-28 20:35:15,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=469, PETRI_PLACES=149, PETRI_TRANSITIONS=179} [2023-11-28 20:35:15,993 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 0 predicate places. [2023-11-28 20:35:15,993 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 179 transitions, 469 flow [2023-11-28 20:35:15,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:15,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:35:15,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:35:15,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-28 20:35:15,994 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:35:15,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:35:15,995 INFO L85 PathProgramCache]: Analyzing trace with hash -2007973256, now seen corresponding path program 1 times [2023-11-28 20:35:15,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:35:15,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901265385] [2023-11-28 20:35:15,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:15,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:35:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:16,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 20:35:16,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:35:16,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901265385] [2023-11-28 20:35:16,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901265385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:35:16,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:35:16,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:35:16,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130298551] [2023-11-28 20:35:16,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:35:16,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:35:16,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:35:16,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:35:16,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:35:16,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 171 [2023-11-28 20:35:16,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 179 transitions, 469 flow. Second operand has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:16,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:35:16,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 171 [2023-11-28 20:35:16,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:35:17,480 INFO L124 PetriNetUnfolderBase]: 8605/17724 cut-off events. [2023-11-28 20:35:17,481 INFO L125 PetriNetUnfolderBase]: For 1743/1743 co-relation queries the response was YES. [2023-11-28 20:35:17,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32514 conditions, 17724 events. 8605/17724 cut-off events. For 1743/1743 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 162357 event pairs, 3883 based on Foata normal form. 172/15891 useless extension candidates. Maximal degree in co-relation 28230. Up to 8179 conditions per place. [2023-11-28 20:35:17,546 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 198 selfloop transitions, 3 changer transitions 0/270 dead transitions. [2023-11-28 20:35:17,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 270 transitions, 1082 flow [2023-11-28 20:35:17,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:35:17,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:35:17,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 508 transitions. [2023-11-28 20:35:17,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7426900584795322 [2023-11-28 20:35:17,549 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 508 transitions. [2023-11-28 20:35:17,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 508 transitions. [2023-11-28 20:35:17,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:35:17,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 508 transitions. [2023-11-28 20:35:17,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:17,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:17,552 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:17,552 INFO L175 Difference]: Start difference. First operand has 149 places, 179 transitions, 469 flow. Second operand 4 states and 508 transitions. [2023-11-28 20:35:17,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 270 transitions, 1082 flow [2023-11-28 20:35:17,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 270 transitions, 1064 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-28 20:35:17,592 INFO L231 Difference]: Finished difference. Result has 151 places, 180 transitions, 477 flow [2023-11-28 20:35:17,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=477, PETRI_PLACES=151, PETRI_TRANSITIONS=180} [2023-11-28 20:35:17,593 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 2 predicate places. [2023-11-28 20:35:17,593 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 180 transitions, 477 flow [2023-11-28 20:35:17,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:17,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:35:17,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:35:17,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-28 20:35:17,595 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:35:17,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:35:17,595 INFO L85 PathProgramCache]: Analyzing trace with hash -2042360913, now seen corresponding path program 1 times [2023-11-28 20:35:17,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:35:17,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321122327] [2023-11-28 20:35:17,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:17,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:35:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:17,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 20:35:17,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:35:17,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321122327] [2023-11-28 20:35:17,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321122327] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:35:17,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:35:17,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:35:17,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276234175] [2023-11-28 20:35:17,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:35:17,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:35:17,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:35:17,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:35:17,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:35:17,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 171 [2023-11-28 20:35:17,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 180 transitions, 477 flow. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:17,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:35:17,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 171 [2023-11-28 20:35:17,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:35:18,885 INFO L124 PetriNetUnfolderBase]: 7643/17302 cut-off events. [2023-11-28 20:35:18,885 INFO L125 PetriNetUnfolderBase]: For 2035/2035 co-relation queries the response was YES. [2023-11-28 20:35:18,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30877 conditions, 17302 events. 7643/17302 cut-off events. For 2035/2035 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 168763 event pairs, 3601 based on Foata normal form. 0/14856 useless extension candidates. Maximal degree in co-relation 23076. Up to 8130 conditions per place. [2023-11-28 20:35:18,952 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 136 selfloop transitions, 6 changer transitions 0/216 dead transitions. [2023-11-28 20:35:18,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 216 transitions, 842 flow [2023-11-28 20:35:18,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:35:18,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:35:18,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 448 transitions. [2023-11-28 20:35:18,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6549707602339181 [2023-11-28 20:35:18,954 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 448 transitions. [2023-11-28 20:35:18,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 448 transitions. [2023-11-28 20:35:18,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:35:18,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 448 transitions. [2023-11-28 20:35:18,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:18,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:18,956 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:18,956 INFO L175 Difference]: Start difference. First operand has 151 places, 180 transitions, 477 flow. Second operand 4 states and 448 transitions. [2023-11-28 20:35:18,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 216 transitions, 842 flow [2023-11-28 20:35:18,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 216 transitions, 838 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:35:18,988 INFO L231 Difference]: Finished difference. Result has 152 places, 180 transitions, 494 flow [2023-11-28 20:35:18,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=494, PETRI_PLACES=152, PETRI_TRANSITIONS=180} [2023-11-28 20:35:18,988 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 3 predicate places. [2023-11-28 20:35:18,988 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 180 transitions, 494 flow [2023-11-28 20:35:18,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:18,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:35:18,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:35:18,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-28 20:35:18,989 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:35:18,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:35:18,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1320561037, now seen corresponding path program 1 times [2023-11-28 20:35:18,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:35:18,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108471525] [2023-11-28 20:35:18,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:18,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:35:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:19,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 20:35:19,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:35:19,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108471525] [2023-11-28 20:35:19,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108471525] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:35:19,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511681584] [2023-11-28 20:35:19,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:19,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:35:19,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:35:19,075 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:35:19,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 20:35:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:19,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 20:35:19,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:35:19,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 20:35:19,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:35:19,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 20:35:19,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511681584] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:35:19,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:35:19,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-28 20:35:19,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238109028] [2023-11-28 20:35:19,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:35:19,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-28 20:35:19,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:35:19,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-28 20:35:19,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-28 20:35:19,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 171 [2023-11-28 20:35:19,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 180 transitions, 494 flow. Second operand has 11 states, 11 states have (on average 87.9090909090909) internal successors, (967), 11 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:19,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:35:19,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 171 [2023-11-28 20:35:19,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:35:20,740 INFO L124 PetriNetUnfolderBase]: 7620/17187 cut-off events. [2023-11-28 20:35:20,740 INFO L125 PetriNetUnfolderBase]: For 3134/3134 co-relation queries the response was YES. [2023-11-28 20:35:20,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31743 conditions, 17187 events. 7620/17187 cut-off events. For 3134/3134 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 167359 event pairs, 5014 based on Foata normal form. 0/14845 useless extension candidates. Maximal degree in co-relation 23111. Up to 11160 conditions per place. [2023-11-28 20:35:20,810 INFO L140 encePairwiseOnDemand]: 164/171 looper letters, 78 selfloop transitions, 24 changer transitions 0/176 dead transitions. [2023-11-28 20:35:20,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 176 transitions, 684 flow [2023-11-28 20:35:20,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 20:35:20,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-28 20:35:20,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 691 transitions. [2023-11-28 20:35:20,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5772765246449457 [2023-11-28 20:35:20,813 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 691 transitions. [2023-11-28 20:35:20,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 691 transitions. [2023-11-28 20:35:20,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:35:20,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 691 transitions. [2023-11-28 20:35:20,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 98.71428571428571) internal successors, (691), 7 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:20,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:20,817 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:20,817 INFO L175 Difference]: Start difference. First operand has 152 places, 180 transitions, 494 flow. Second operand 7 states and 691 transitions. [2023-11-28 20:35:20,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 176 transitions, 684 flow [2023-11-28 20:35:20,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 176 transitions, 677 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:35:20,841 INFO L231 Difference]: Finished difference. Result has 156 places, 176 transitions, 521 flow [2023-11-28 20:35:20,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=521, PETRI_PLACES=156, PETRI_TRANSITIONS=176} [2023-11-28 20:35:20,842 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 7 predicate places. [2023-11-28 20:35:20,842 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 176 transitions, 521 flow [2023-11-28 20:35:20,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 87.9090909090909) internal successors, (967), 11 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:20,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:35:20,843 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:35:20,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-28 20:35:21,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-28 20:35:21,043 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:35:21,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:35:21,043 INFO L85 PathProgramCache]: Analyzing trace with hash -362801549, now seen corresponding path program 2 times [2023-11-28 20:35:21,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:35:21,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360046606] [2023-11-28 20:35:21,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:21,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:35:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:21,224 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-28 20:35:21,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:35:21,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360046606] [2023-11-28 20:35:21,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360046606] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:35:21,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84484994] [2023-11-28 20:35:21,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:35:21,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:35:21,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:35:21,227 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:35:21,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 20:35:21,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 20:35:21,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:35:21,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 20:35:21,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:35:21,438 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-28 20:35:21,438 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:35:21,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84484994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:35:21,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:35:21,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 11 [2023-11-28 20:35:21,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11205337] [2023-11-28 20:35:21,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:35:21,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:35:21,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:35:21,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:35:21,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-28 20:35:21,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 171 [2023-11-28 20:35:21,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 176 transitions, 521 flow. Second operand has 5 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:21,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:35:21,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 171 [2023-11-28 20:35:21,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:35:23,582 INFO L124 PetriNetUnfolderBase]: 9985/21502 cut-off events. [2023-11-28 20:35:23,582 INFO L125 PetriNetUnfolderBase]: For 3478/3478 co-relation queries the response was YES. [2023-11-28 20:35:23,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39899 conditions, 21502 events. 9985/21502 cut-off events. For 3478/3478 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 208807 event pairs, 6091 based on Foata normal form. 258/19238 useless extension candidates. Maximal degree in co-relation 39774. Up to 13384 conditions per place. [2023-11-28 20:35:23,677 INFO L140 encePairwiseOnDemand]: 163/171 looper letters, 211 selfloop transitions, 7 changer transitions 0/286 dead transitions. [2023-11-28 20:35:23,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 286 transitions, 1208 flow [2023-11-28 20:35:23,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:35:23,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 20:35:23,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 657 transitions. [2023-11-28 20:35:23,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6403508771929824 [2023-11-28 20:35:23,679 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 657 transitions. [2023-11-28 20:35:23,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 657 transitions. [2023-11-28 20:35:23,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:35:23,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 657 transitions. [2023-11-28 20:35:23,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.5) internal successors, (657), 6 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:23,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:23,683 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:23,683 INFO L175 Difference]: Start difference. First operand has 156 places, 176 transitions, 521 flow. Second operand 6 states and 657 transitions. [2023-11-28 20:35:23,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 286 transitions, 1208 flow [2023-11-28 20:35:23,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 286 transitions, 1160 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-28 20:35:23,731 INFO L231 Difference]: Finished difference. Result has 157 places, 179 transitions, 516 flow [2023-11-28 20:35:23,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=516, PETRI_PLACES=157, PETRI_TRANSITIONS=179} [2023-11-28 20:35:23,732 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 8 predicate places. [2023-11-28 20:35:23,732 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 179 transitions, 516 flow [2023-11-28 20:35:23,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:23,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:35:23,732 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:35:23,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-28 20:35:23,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-28 20:35:23,933 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:35:23,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:35:23,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1568085010, now seen corresponding path program 1 times [2023-11-28 20:35:23,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:35:23,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415645933] [2023-11-28 20:35:23,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:23,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:35:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:24,023 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-28 20:35:24,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:35:24,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415645933] [2023-11-28 20:35:24,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415645933] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:35:24,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:35:24,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:35:24,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344379894] [2023-11-28 20:35:24,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:35:24,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:35:24,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:35:24,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:35:24,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:35:24,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 171 [2023-11-28 20:35:24,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 179 transitions, 516 flow. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:24,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:35:24,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 171 [2023-11-28 20:35:24,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:35:25,705 INFO L124 PetriNetUnfolderBase]: 9868/21519 cut-off events. [2023-11-28 20:35:25,705 INFO L125 PetriNetUnfolderBase]: For 5868/6083 co-relation queries the response was YES. [2023-11-28 20:35:25,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41130 conditions, 21519 events. 9868/21519 cut-off events. For 5868/6083 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 211085 event pairs, 5153 based on Foata normal form. 91/18970 useless extension candidates. Maximal degree in co-relation 35941. Up to 11296 conditions per place. [2023-11-28 20:35:25,803 INFO L140 encePairwiseOnDemand]: 163/171 looper letters, 144 selfloop transitions, 7 changer transitions 0/221 dead transitions. [2023-11-28 20:35:25,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 221 transitions, 969 flow [2023-11-28 20:35:25,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:35:25,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:35:25,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 451 transitions. [2023-11-28 20:35:25,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6593567251461988 [2023-11-28 20:35:25,805 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 451 transitions. [2023-11-28 20:35:25,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 451 transitions. [2023-11-28 20:35:25,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:35:25,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 451 transitions. [2023-11-28 20:35:25,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:25,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:25,808 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:25,808 INFO L175 Difference]: Start difference. First operand has 157 places, 179 transitions, 516 flow. Second operand 4 states and 451 transitions. [2023-11-28 20:35:25,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 221 transitions, 969 flow [2023-11-28 20:35:25,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 221 transitions, 954 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-28 20:35:25,847 INFO L231 Difference]: Finished difference. Result has 157 places, 179 transitions, 529 flow [2023-11-28 20:35:25,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=529, PETRI_PLACES=157, PETRI_TRANSITIONS=179} [2023-11-28 20:35:25,847 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 8 predicate places. [2023-11-28 20:35:25,847 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 179 transitions, 529 flow [2023-11-28 20:35:25,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:25,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:35:25,848 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:35:25,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-28 20:35:25,848 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:35:25,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:35:25,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1638055575, now seen corresponding path program 1 times [2023-11-28 20:35:25,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:35:25,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075454552] [2023-11-28 20:35:25,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:25,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:35:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:26,019 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-28 20:35:26,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:35:26,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075454552] [2023-11-28 20:35:26,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075454552] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:35:26,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393513586] [2023-11-28 20:35:26,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:26,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:35:26,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:35:26,021 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:35:26,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-28 20:35:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:26,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-28 20:35:26,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:35:26,295 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-28 20:35:26,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:35:26,421 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-28 20:35:26,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393513586] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:35:26,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:35:26,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-11-28 20:35:26,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827001188] [2023-11-28 20:35:26,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:35:26,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-28 20:35:26,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:35:26,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-28 20:35:26,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-11-28 20:35:26,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 171 [2023-11-28 20:35:26,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 179 transitions, 529 flow. Second operand has 23 states, 23 states have (on average 87.43478260869566) internal successors, (2011), 23 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:26,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:35:26,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 171 [2023-11-28 20:35:26,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:35:28,354 INFO L124 PetriNetUnfolderBase]: 8982/20495 cut-off events. [2023-11-28 20:35:28,354 INFO L125 PetriNetUnfolderBase]: For 6796/6971 co-relation queries the response was YES. [2023-11-28 20:35:28,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39597 conditions, 20495 events. 8982/20495 cut-off events. For 6796/6971 co-relation queries the response was YES. Maximal size of possible extension queue 747. Compared 207269 event pairs, 6058 based on Foata normal form. 79/18330 useless extension candidates. Maximal degree in co-relation 34843. Up to 13230 conditions per place. [2023-11-28 20:35:28,451 INFO L140 encePairwiseOnDemand]: 164/171 looper letters, 80 selfloop transitions, 22 changer transitions 0/175 dead transitions. [2023-11-28 20:35:28,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 175 transitions, 719 flow [2023-11-28 20:35:28,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 20:35:28,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-28 20:35:28,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1043 transitions. [2023-11-28 20:35:28,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5544922913343966 [2023-11-28 20:35:28,454 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1043 transitions. [2023-11-28 20:35:28,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1043 transitions. [2023-11-28 20:35:28,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:35:28,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1043 transitions. [2023-11-28 20:35:28,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 94.81818181818181) internal successors, (1043), 11 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:28,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 171.0) internal successors, (2052), 12 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:28,459 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 171.0) internal successors, (2052), 12 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:28,459 INFO L175 Difference]: Start difference. First operand has 157 places, 179 transitions, 529 flow. Second operand 11 states and 1043 transitions. [2023-11-28 20:35:28,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 175 transitions, 719 flow [2023-11-28 20:35:28,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 175 transitions, 711 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:35:28,800 INFO L231 Difference]: Finished difference. Result has 165 places, 175 transitions, 551 flow [2023-11-28 20:35:28,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=551, PETRI_PLACES=165, PETRI_TRANSITIONS=175} [2023-11-28 20:35:28,800 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 16 predicate places. [2023-11-28 20:35:28,800 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 175 transitions, 551 flow [2023-11-28 20:35:28,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 87.43478260869566) internal successors, (2011), 23 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:28,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:35:28,801 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:35:28,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-28 20:35:29,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-28 20:35:29,002 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:35:29,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:35:29,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1109761687, now seen corresponding path program 2 times [2023-11-28 20:35:29,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:35:29,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249791420] [2023-11-28 20:35:29,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:29,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:35:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:29,115 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-28 20:35:29,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:35:29,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249791420] [2023-11-28 20:35:29,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249791420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:35:29,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:35:29,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:35:29,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223087660] [2023-11-28 20:35:29,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:35:29,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:35:29,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:35:29,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:35:29,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:35:29,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 171 [2023-11-28 20:35:29,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 175 transitions, 551 flow. Second operand has 6 states, 6 states have (on average 76.5) internal successors, (459), 6 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:29,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:35:29,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 171 [2023-11-28 20:35:29,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:35:31,527 INFO L124 PetriNetUnfolderBase]: 12168/24297 cut-off events. [2023-11-28 20:35:31,527 INFO L125 PetriNetUnfolderBase]: For 6258/6266 co-relation queries the response was YES. [2023-11-28 20:35:31,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48727 conditions, 24297 events. 12168/24297 cut-off events. For 6258/6266 co-relation queries the response was YES. Maximal size of possible extension queue 809. Compared 224485 event pairs, 4872 based on Foata normal form. 548/22703 useless extension candidates. Maximal degree in co-relation 48611. Up to 10937 conditions per place. [2023-11-28 20:35:31,621 INFO L140 encePairwiseOnDemand]: 158/171 looper letters, 279 selfloop transitions, 15 changer transitions 0/357 dead transitions. [2023-11-28 20:35:31,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 357 transitions, 1588 flow [2023-11-28 20:35:31,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 20:35:31,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-28 20:35:31,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 852 transitions. [2023-11-28 20:35:31,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2023-11-28 20:35:31,624 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 852 transitions. [2023-11-28 20:35:31,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 852 transitions. [2023-11-28 20:35:31,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:35:31,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 852 transitions. [2023-11-28 20:35:31,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 106.5) internal successors, (852), 8 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:31,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 171.0) internal successors, (1539), 9 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:31,628 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 171.0) internal successors, (1539), 9 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:31,628 INFO L175 Difference]: Start difference. First operand has 165 places, 175 transitions, 551 flow. Second operand 8 states and 852 transitions. [2023-11-28 20:35:31,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 357 transitions, 1588 flow [2023-11-28 20:35:31,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 357 transitions, 1544 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-11-28 20:35:31,815 INFO L231 Difference]: Finished difference. Result has 165 places, 177 transitions, 568 flow [2023-11-28 20:35:31,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=568, PETRI_PLACES=165, PETRI_TRANSITIONS=177} [2023-11-28 20:35:31,816 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 16 predicate places. [2023-11-28 20:35:31,816 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 177 transitions, 568 flow [2023-11-28 20:35:31,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.5) internal successors, (459), 6 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:31,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:35:31,816 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:35:31,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-28 20:35:31,817 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:35:31,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:35:31,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1784219566, now seen corresponding path program 1 times [2023-11-28 20:35:31,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:35:31,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604626495] [2023-11-28 20:35:31,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:31,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:35:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:31,905 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-28 20:35:31,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:35:31,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604626495] [2023-11-28 20:35:31,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604626495] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:35:31,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:35:31,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:35:31,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594553100] [2023-11-28 20:35:31,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:35:31,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:35:31,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:35:31,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:35:31,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:35:31,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 171 [2023-11-28 20:35:31,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 177 transitions, 568 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:31,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:35:31,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 171 [2023-11-28 20:35:31,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:35:33,747 INFO L124 PetriNetUnfolderBase]: 8915/18410 cut-off events. [2023-11-28 20:35:33,747 INFO L125 PetriNetUnfolderBase]: For 14081/14665 co-relation queries the response was YES. [2023-11-28 20:35:33,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39567 conditions, 18410 events. 8915/18410 cut-off events. For 14081/14665 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 168073 event pairs, 4283 based on Foata normal form. 328/17317 useless extension candidates. Maximal degree in co-relation 36405. Up to 9209 conditions per place. [2023-11-28 20:35:33,822 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 229 selfloop transitions, 4 changer transitions 18/320 dead transitions. [2023-11-28 20:35:33,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 320 transitions, 1647 flow [2023-11-28 20:35:33,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:35:33,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 20:35:33,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 627 transitions. [2023-11-28 20:35:33,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2023-11-28 20:35:33,825 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 627 transitions. [2023-11-28 20:35:33,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 627 transitions. [2023-11-28 20:35:33,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:35:33,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 627 transitions. [2023-11-28 20:35:33,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.4) internal successors, (627), 5 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:33,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:33,827 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:33,827 INFO L175 Difference]: Start difference. First operand has 165 places, 177 transitions, 568 flow. Second operand 5 states and 627 transitions. [2023-11-28 20:35:33,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 320 transitions, 1647 flow [2023-11-28 20:35:33,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 320 transitions, 1612 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-28 20:35:33,941 INFO L231 Difference]: Finished difference. Result has 169 places, 179 transitions, 582 flow [2023-11-28 20:35:33,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=582, PETRI_PLACES=169, PETRI_TRANSITIONS=179} [2023-11-28 20:35:33,942 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 20 predicate places. [2023-11-28 20:35:33,942 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 179 transitions, 582 flow [2023-11-28 20:35:33,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:33,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:35:33,942 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:35:33,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-28 20:35:33,942 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:35:33,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:35:33,943 INFO L85 PathProgramCache]: Analyzing trace with hash 989791551, now seen corresponding path program 1 times [2023-11-28 20:35:33,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:35:33,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223992616] [2023-11-28 20:35:33,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:33,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:35:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:34,029 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-28 20:35:34,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:35:34,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223992616] [2023-11-28 20:35:34,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223992616] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:35:34,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:35:34,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:35:34,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565053622] [2023-11-28 20:35:34,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:35:34,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:35:34,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:35:34,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:35:34,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:35:34,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 171 [2023-11-28 20:35:34,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 179 transitions, 582 flow. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:34,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:35:34,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 171 [2023-11-28 20:35:34,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:35:35,927 INFO L124 PetriNetUnfolderBase]: 9413/19068 cut-off events. [2023-11-28 20:35:35,927 INFO L125 PetriNetUnfolderBase]: For 10868/10989 co-relation queries the response was YES. [2023-11-28 20:35:35,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42033 conditions, 19068 events. 9413/19068 cut-off events. For 10868/10989 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 170310 event pairs, 4347 based on Foata normal form. 327/18241 useless extension candidates. Maximal degree in co-relation 38853. Up to 9509 conditions per place. [2023-11-28 20:35:36,012 INFO L140 encePairwiseOnDemand]: 161/171 looper letters, 176 selfloop transitions, 10 changer transitions 0/253 dead transitions. [2023-11-28 20:35:36,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 253 transitions, 1174 flow [2023-11-28 20:35:36,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:35:36,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:35:36,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 465 transitions. [2023-11-28 20:35:36,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6798245614035088 [2023-11-28 20:35:36,013 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 465 transitions. [2023-11-28 20:35:36,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 465 transitions. [2023-11-28 20:35:36,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:35:36,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 465 transitions. [2023-11-28 20:35:36,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 116.25) internal successors, (465), 4 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:36,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:36,016 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:36,016 INFO L175 Difference]: Start difference. First operand has 169 places, 179 transitions, 582 flow. Second operand 4 states and 465 transitions. [2023-11-28 20:35:36,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 253 transitions, 1174 flow [2023-11-28 20:35:36,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 253 transitions, 1168 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 20:35:36,199 INFO L231 Difference]: Finished difference. Result has 169 places, 177 transitions, 592 flow [2023-11-28 20:35:36,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=592, PETRI_PLACES=169, PETRI_TRANSITIONS=177} [2023-11-28 20:35:36,199 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 20 predicate places. [2023-11-28 20:35:36,199 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 177 transitions, 592 flow [2023-11-28 20:35:36,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:36,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:35:36,200 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:35:36,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-28 20:35:36,200 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:35:36,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:35:36,200 INFO L85 PathProgramCache]: Analyzing trace with hash 989790526, now seen corresponding path program 1 times [2023-11-28 20:35:36,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:35:36,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063019623] [2023-11-28 20:35:36,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:36,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:35:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:36,285 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-28 20:35:36,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:35:36,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063019623] [2023-11-28 20:35:36,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063019623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:35:36,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:35:36,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:35:36,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290008283] [2023-11-28 20:35:36,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:35:36,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:35:36,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:35:36,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:35:36,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:35:36,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 171 [2023-11-28 20:35:36,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 177 transitions, 592 flow. Second operand has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:36,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:35:36,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 171 [2023-11-28 20:35:36,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:35:38,998 INFO L124 PetriNetUnfolderBase]: 12563/24396 cut-off events. [2023-11-28 20:35:38,998 INFO L125 PetriNetUnfolderBase]: For 12994/13130 co-relation queries the response was YES. [2023-11-28 20:35:39,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55740 conditions, 24396 events. 12563/24396 cut-off events. For 12994/13130 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 216605 event pairs, 5897 based on Foata normal form. 640/23539 useless extension candidates. Maximal degree in co-relation 49511. Up to 12329 conditions per place. [2023-11-28 20:35:39,122 INFO L140 encePairwiseOnDemand]: 161/171 looper letters, 188 selfloop transitions, 12 changer transitions 0/261 dead transitions. [2023-11-28 20:35:39,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 261 transitions, 1250 flow [2023-11-28 20:35:39,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:35:39,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:35:39,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 481 transitions. [2023-11-28 20:35:39,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7032163742690059 [2023-11-28 20:35:39,123 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 481 transitions. [2023-11-28 20:35:39,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 481 transitions. [2023-11-28 20:35:39,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:35:39,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 481 transitions. [2023-11-28 20:35:39,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 120.25) internal successors, (481), 4 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:39,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:39,125 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:39,125 INFO L175 Difference]: Start difference. First operand has 169 places, 177 transitions, 592 flow. Second operand 4 states and 481 transitions. [2023-11-28 20:35:39,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 261 transitions, 1250 flow [2023-11-28 20:35:39,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 261 transitions, 1232 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-28 20:35:39,566 INFO L231 Difference]: Finished difference. Result has 172 places, 179 transitions, 641 flow [2023-11-28 20:35:39,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=641, PETRI_PLACES=172, PETRI_TRANSITIONS=179} [2023-11-28 20:35:39,567 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 23 predicate places. [2023-11-28 20:35:39,567 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 179 transitions, 641 flow [2023-11-28 20:35:39,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:39,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:35:39,567 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:35:39,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-28 20:35:39,567 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:35:39,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:35:39,568 INFO L85 PathProgramCache]: Analyzing trace with hash -2118056651, now seen corresponding path program 1 times [2023-11-28 20:35:39,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:35:39,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196223425] [2023-11-28 20:35:39,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:39,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:35:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:39,637 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-28 20:35:39,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:35:39,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196223425] [2023-11-28 20:35:39,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196223425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:35:39,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:35:39,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:35:39,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827038177] [2023-11-28 20:35:39,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:35:39,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:35:39,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:35:39,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:35:39,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:35:39,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 171 [2023-11-28 20:35:39,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 179 transitions, 641 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:39,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:35:39,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 171 [2023-11-28 20:35:39,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:35:41,615 INFO L124 PetriNetUnfolderBase]: 8932/18027 cut-off events. [2023-11-28 20:35:41,615 INFO L125 PetriNetUnfolderBase]: For 15748/16076 co-relation queries the response was YES. [2023-11-28 20:35:41,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41656 conditions, 18027 events. 8932/18027 cut-off events. For 15748/16076 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 159023 event pairs, 4738 based on Foata normal form. 326/17339 useless extension candidates. Maximal degree in co-relation 38732. Up to 9692 conditions per place. [2023-11-28 20:35:41,701 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 220 selfloop transitions, 4 changer transitions 18/310 dead transitions. [2023-11-28 20:35:41,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 310 transitions, 1497 flow [2023-11-28 20:35:41,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:35:41,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 20:35:41,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 631 transitions. [2023-11-28 20:35:41,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7380116959064328 [2023-11-28 20:35:41,703 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 631 transitions. [2023-11-28 20:35:41,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 631 transitions. [2023-11-28 20:35:41,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:35:41,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 631 transitions. [2023-11-28 20:35:41,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.2) internal successors, (631), 5 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:41,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:41,706 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:41,706 INFO L175 Difference]: Start difference. First operand has 172 places, 179 transitions, 641 flow. Second operand 5 states and 631 transitions. [2023-11-28 20:35:41,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 310 transitions, 1497 flow [2023-11-28 20:35:41,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 310 transitions, 1483 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-28 20:35:41,862 INFO L231 Difference]: Finished difference. Result has 177 places, 181 transitions, 652 flow [2023-11-28 20:35:41,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=652, PETRI_PLACES=177, PETRI_TRANSITIONS=181} [2023-11-28 20:35:41,862 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 28 predicate places. [2023-11-28 20:35:41,862 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 181 transitions, 652 flow [2023-11-28 20:35:41,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:41,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:35:41,863 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:35:41,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-28 20:35:41,863 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:35:41,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:35:41,863 INFO L85 PathProgramCache]: Analyzing trace with hash 198002587, now seen corresponding path program 1 times [2023-11-28 20:35:41,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:35:41,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913741118] [2023-11-28 20:35:41,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:41,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:35:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:41,984 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-28 20:35:41,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:35:41,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913741118] [2023-11-28 20:35:41,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913741118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:35:41,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:35:41,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:35:41,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055854032] [2023-11-28 20:35:41,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:35:41,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:35:41,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:35:41,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:35:41,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:35:42,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 171 [2023-11-28 20:35:42,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 181 transitions, 652 flow. Second operand has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:42,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:35:42,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 171 [2023-11-28 20:35:42,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:35:44,323 INFO L124 PetriNetUnfolderBase]: 11343/22100 cut-off events. [2023-11-28 20:35:44,323 INFO L125 PetriNetUnfolderBase]: For 20539/21251 co-relation queries the response was YES. [2023-11-28 20:35:44,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52240 conditions, 22100 events. 11343/22100 cut-off events. For 20539/21251 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 191810 event pairs, 5845 based on Foata normal form. 482/21140 useless extension candidates. Maximal degree in co-relation 48890. Up to 11730 conditions per place. [2023-11-28 20:35:44,433 INFO L140 encePairwiseOnDemand]: 160/171 looper letters, 205 selfloop transitions, 10 changer transitions 0/277 dead transitions. [2023-11-28 20:35:44,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 277 transitions, 1554 flow [2023-11-28 20:35:44,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:35:44,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 20:35:44,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 559 transitions. [2023-11-28 20:35:44,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6538011695906433 [2023-11-28 20:35:44,435 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 559 transitions. [2023-11-28 20:35:44,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 559 transitions. [2023-11-28 20:35:44,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:35:44,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 559 transitions. [2023-11-28 20:35:44,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.8) internal successors, (559), 5 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:44,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:44,438 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:44,438 INFO L175 Difference]: Start difference. First operand has 177 places, 181 transitions, 652 flow. Second operand 5 states and 559 transitions. [2023-11-28 20:35:44,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 277 transitions, 1554 flow [2023-11-28 20:35:44,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 277 transitions, 1554 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-28 20:35:44,696 INFO L231 Difference]: Finished difference. Result has 183 places, 183 transitions, 703 flow [2023-11-28 20:35:44,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=703, PETRI_PLACES=183, PETRI_TRANSITIONS=183} [2023-11-28 20:35:44,697 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 34 predicate places. [2023-11-28 20:35:44,697 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 183 transitions, 703 flow [2023-11-28 20:35:44,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:44,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:35:44,697 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:35:44,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-28 20:35:44,697 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:35:44,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:35:44,698 INFO L85 PathProgramCache]: Analyzing trace with hash 198003612, now seen corresponding path program 1 times [2023-11-28 20:35:44,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:35:44,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813653833] [2023-11-28 20:35:44,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:44,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:35:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:44,765 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-28 20:35:44,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:35:44,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813653833] [2023-11-28 20:35:44,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813653833] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:35:44,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:35:44,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:35:44,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967561532] [2023-11-28 20:35:44,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:35:44,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:35:44,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:35:44,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:35:44,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:35:44,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 171 [2023-11-28 20:35:44,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 183 transitions, 703 flow. Second operand has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:44,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:35:44,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 171 [2023-11-28 20:35:44,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:35:47,355 INFO L124 PetriNetUnfolderBase]: 11457/23072 cut-off events. [2023-11-28 20:35:47,355 INFO L125 PetriNetUnfolderBase]: For 23589/24261 co-relation queries the response was YES. [2023-11-28 20:35:47,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56757 conditions, 23072 events. 11457/23072 cut-off events. For 23589/24261 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 208155 event pairs, 5845 based on Foata normal form. 560/22314 useless extension candidates. Maximal degree in co-relation 53173. Up to 11935 conditions per place. [2023-11-28 20:35:47,487 INFO L140 encePairwiseOnDemand]: 157/171 looper letters, 206 selfloop transitions, 13 changer transitions 0/282 dead transitions. [2023-11-28 20:35:47,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 282 transitions, 1633 flow [2023-11-28 20:35:47,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:35:47,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:35:47,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 475 transitions. [2023-11-28 20:35:47,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2023-11-28 20:35:47,488 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 475 transitions. [2023-11-28 20:35:47,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 475 transitions. [2023-11-28 20:35:47,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:35:47,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 475 transitions. [2023-11-28 20:35:47,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 118.75) internal successors, (475), 4 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:47,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:47,490 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:47,490 INFO L175 Difference]: Start difference. First operand has 183 places, 183 transitions, 703 flow. Second operand 4 states and 475 transitions. [2023-11-28 20:35:47,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 282 transitions, 1633 flow [2023-11-28 20:35:47,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 282 transitions, 1623 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:35:47,921 INFO L231 Difference]: Finished difference. Result has 186 places, 188 transitions, 778 flow [2023-11-28 20:35:47,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=778, PETRI_PLACES=186, PETRI_TRANSITIONS=188} [2023-11-28 20:35:47,922 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 37 predicate places. [2023-11-28 20:35:47,922 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 188 transitions, 778 flow [2023-11-28 20:35:47,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:47,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:35:47,922 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:35:47,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-28 20:35:47,922 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:35:47,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:35:47,923 INFO L85 PathProgramCache]: Analyzing trace with hash -489409632, now seen corresponding path program 1 times [2023-11-28 20:35:47,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:35:47,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519125217] [2023-11-28 20:35:47,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:47,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:35:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:48,019 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-28 20:35:48,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:35:48,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519125217] [2023-11-28 20:35:48,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519125217] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:35:48,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:35:48,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:35:48,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662643954] [2023-11-28 20:35:48,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:35:48,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:35:48,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:35:48,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:35:48,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:35:48,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 171 [2023-11-28 20:35:48,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 188 transitions, 778 flow. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:48,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:35:48,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 171 [2023-11-28 20:35:48,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:35:50,906 INFO L124 PetriNetUnfolderBase]: 10861/22058 cut-off events. [2023-11-28 20:35:50,906 INFO L125 PetriNetUnfolderBase]: For 27243/27973 co-relation queries the response was YES. [2023-11-28 20:35:50,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56458 conditions, 22058 events. 10861/22058 cut-off events. For 27243/27973 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 201456 event pairs, 6411 based on Foata normal form. 736/21849 useless extension candidates. Maximal degree in co-relation 53009. Up to 13009 conditions per place. [2023-11-28 20:35:51,057 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 220 selfloop transitions, 3 changer transitions 0/290 dead transitions. [2023-11-28 20:35:51,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 290 transitions, 1706 flow [2023-11-28 20:35:51,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:35:51,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:35:51,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 500 transitions. [2023-11-28 20:35:51,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7309941520467836 [2023-11-28 20:35:51,059 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 500 transitions. [2023-11-28 20:35:51,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 500 transitions. [2023-11-28 20:35:51,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:35:51,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 500 transitions. [2023-11-28 20:35:51,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:51,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:51,060 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:51,060 INFO L175 Difference]: Start difference. First operand has 186 places, 188 transitions, 778 flow. Second operand 4 states and 500 transitions. [2023-11-28 20:35:51,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 290 transitions, 1706 flow [2023-11-28 20:35:51,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 290 transitions, 1699 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 20:35:51,478 INFO L231 Difference]: Finished difference. Result has 190 places, 189 transitions, 789 flow [2023-11-28 20:35:51,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=789, PETRI_PLACES=190, PETRI_TRANSITIONS=189} [2023-11-28 20:35:51,478 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 41 predicate places. [2023-11-28 20:35:51,478 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 189 transitions, 789 flow [2023-11-28 20:35:51,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:51,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:35:51,479 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:35:51,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-28 20:35:51,479 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:35:51,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:35:51,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1843114679, now seen corresponding path program 1 times [2023-11-28 20:35:51,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:35:51,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682664383] [2023-11-28 20:35:51,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:51,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:35:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:51,566 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-28 20:35:51,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:35:51,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682664383] [2023-11-28 20:35:51,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682664383] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:35:51,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:35:51,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:35:51,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946921549] [2023-11-28 20:35:51,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:35:51,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:35:51,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:35:51,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:35:51,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:35:51,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 171 [2023-11-28 20:35:51,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 189 transitions, 789 flow. Second operand has 6 states, 6 states have (on average 76.83333333333333) internal successors, (461), 6 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:51,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:35:51,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 171 [2023-11-28 20:35:51,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:35:54,622 INFO L124 PetriNetUnfolderBase]: 13043/24376 cut-off events. [2023-11-28 20:35:54,622 INFO L125 PetriNetUnfolderBase]: For 32687/33569 co-relation queries the response was YES. [2023-11-28 20:35:54,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64901 conditions, 24376 events. 13043/24376 cut-off events. For 32687/33569 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 206618 event pairs, 6461 based on Foata normal form. 918/24258 useless extension candidates. Maximal degree in co-relation 60941. Up to 13078 conditions per place. [2023-11-28 20:35:54,781 INFO L140 encePairwiseOnDemand]: 158/171 looper letters, 348 selfloop transitions, 13 changer transitions 0/421 dead transitions. [2023-11-28 20:35:54,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 421 transitions, 2672 flow [2023-11-28 20:35:54,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 20:35:54,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-28 20:35:54,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 854 transitions. [2023-11-28 20:35:54,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6242690058479532 [2023-11-28 20:35:54,783 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 854 transitions. [2023-11-28 20:35:54,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 854 transitions. [2023-11-28 20:35:54,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:35:54,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 854 transitions. [2023-11-28 20:35:54,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 106.75) internal successors, (854), 8 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:54,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 171.0) internal successors, (1539), 9 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:54,786 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 171.0) internal successors, (1539), 9 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:54,786 INFO L175 Difference]: Start difference. First operand has 190 places, 189 transitions, 789 flow. Second operand 8 states and 854 transitions. [2023-11-28 20:35:54,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 421 transitions, 2672 flow [2023-11-28 20:35:55,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 421 transitions, 2670 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 20:35:55,316 INFO L231 Difference]: Finished difference. Result has 199 places, 191 transitions, 844 flow [2023-11-28 20:35:55,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=844, PETRI_PLACES=199, PETRI_TRANSITIONS=191} [2023-11-28 20:35:55,317 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 50 predicate places. [2023-11-28 20:35:55,317 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 191 transitions, 844 flow [2023-11-28 20:35:55,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.83333333333333) internal successors, (461), 6 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:55,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:35:55,317 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:35:55,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-28 20:35:55,317 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:35:55,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:35:55,318 INFO L85 PathProgramCache]: Analyzing trace with hash -2046069401, now seen corresponding path program 1 times [2023-11-28 20:35:55,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:35:55,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262836205] [2023-11-28 20:35:55,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:55,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:35:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:55,388 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-28 20:35:55,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:35:55,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262836205] [2023-11-28 20:35:55,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262836205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:35:55,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:35:55,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:35:55,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459379244] [2023-11-28 20:35:55,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:35:55,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:35:55,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:35:55,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:35:55,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:35:55,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 171 [2023-11-28 20:35:55,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 191 transitions, 844 flow. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:55,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:35:55,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 171 [2023-11-28 20:35:55,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:35:58,096 INFO L124 PetriNetUnfolderBase]: 12167/23364 cut-off events. [2023-11-28 20:35:58,096 INFO L125 PetriNetUnfolderBase]: For 38672/39474 co-relation queries the response was YES. [2023-11-28 20:35:58,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65288 conditions, 23364 events. 12167/23364 cut-off events. For 38672/39474 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 202707 event pairs, 5999 based on Foata normal form. 788/23527 useless extension candidates. Maximal degree in co-relation 61338. Up to 12325 conditions per place. [2023-11-28 20:35:58,248 INFO L140 encePairwiseOnDemand]: 160/171 looper letters, 208 selfloop transitions, 11 changer transitions 0/282 dead transitions. [2023-11-28 20:35:58,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 282 transitions, 1747 flow [2023-11-28 20:35:58,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:35:58,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:35:58,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 468 transitions. [2023-11-28 20:35:58,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6842105263157895 [2023-11-28 20:35:58,250 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 468 transitions. [2023-11-28 20:35:58,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 468 transitions. [2023-11-28 20:35:58,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:35:58,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 468 transitions. [2023-11-28 20:35:58,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 117.0) internal successors, (468), 4 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) [2023-11-28 20:35:58,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:58,252 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:58,252 INFO L175 Difference]: Start difference. First operand has 199 places, 191 transitions, 844 flow. Second operand 4 states and 468 transitions. [2023-11-28 20:35:58,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 282 transitions, 1747 flow [2023-11-28 20:35:58,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 282 transitions, 1738 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-28 20:35:58,804 INFO L231 Difference]: Finished difference. Result has 198 places, 190 transitions, 867 flow [2023-11-28 20:35:58,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=867, PETRI_PLACES=198, PETRI_TRANSITIONS=190} [2023-11-28 20:35:58,804 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 49 predicate places. [2023-11-28 20:35:58,804 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 190 transitions, 867 flow [2023-11-28 20:35:58,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:58,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:35:58,805 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:35:58,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-28 20:35:58,805 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:35:58,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:35:58,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1030902462, now seen corresponding path program 1 times [2023-11-28 20:35:58,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:35:58,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001175137] [2023-11-28 20:35:58,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:58,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:35:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:58,905 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-28 20:35:58,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:35:58,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001175137] [2023-11-28 20:35:58,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001175137] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:35:58,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012069612] [2023-11-28 20:35:58,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:35:58,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:35:58,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:35:58,907 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:35:58,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-28 20:35:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:35:59,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 20:35:59,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:35:59,124 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-28 20:35:59,124 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:35:59,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012069612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:35:59,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:35:59,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-28 20:35:59,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052944653] [2023-11-28 20:35:59,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:35:59,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:35:59,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:35:59,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:35:59,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:35:59,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 171 [2023-11-28 20:35:59,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 190 transitions, 867 flow. Second operand has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:35:59,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:35:59,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 171 [2023-11-28 20:35:59,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:36:01,827 INFO L124 PetriNetUnfolderBase]: 10853/21130 cut-off events. [2023-11-28 20:36:01,827 INFO L125 PetriNetUnfolderBase]: For 38904/40082 co-relation queries the response was YES. [2023-11-28 20:36:01,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59856 conditions, 21130 events. 10853/21130 cut-off events. For 38904/40082 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 185146 event pairs, 2445 based on Foata normal form. 1128/21750 useless extension candidates. Maximal degree in co-relation 56121. Up to 7470 conditions per place. [2023-11-28 20:36:01,965 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 323 selfloop transitions, 5 changer transitions 0/393 dead transitions. [2023-11-28 20:36:01,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 393 transitions, 2613 flow [2023-11-28 20:36:01,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:36:01,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 20:36:01,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 739 transitions. [2023-11-28 20:36:01,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7202729044834308 [2023-11-28 20:36:01,967 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 739 transitions. [2023-11-28 20:36:01,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 739 transitions. [2023-11-28 20:36:01,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:36:01,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 739 transitions. [2023-11-28 20:36:01,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 123.16666666666667) internal successors, (739), 6 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:01,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:01,969 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:01,969 INFO L175 Difference]: Start difference. First operand has 198 places, 190 transitions, 867 flow. Second operand 6 states and 739 transitions. [2023-11-28 20:36:01,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 393 transitions, 2613 flow [2023-11-28 20:36:02,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 393 transitions, 2556 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-28 20:36:02,326 INFO L231 Difference]: Finished difference. Result has 198 places, 187 transitions, 852 flow [2023-11-28 20:36:02,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=852, PETRI_PLACES=198, PETRI_TRANSITIONS=187} [2023-11-28 20:36:02,326 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 49 predicate places. [2023-11-28 20:36:02,326 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 187 transitions, 852 flow [2023-11-28 20:36:02,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:02,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:36:02,327 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:36:02,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-28 20:36:02,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-28 20:36:02,527 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:36:02,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:36:02,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1893203572, now seen corresponding path program 1 times [2023-11-28 20:36:02,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:36:02,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841097278] [2023-11-28 20:36:02,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:36:02,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:36:02,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:36:02,632 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-28 20:36:02,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:36:02,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841097278] [2023-11-28 20:36:02,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841097278] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:36:02,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399963149] [2023-11-28 20:36:02,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:36:02,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:36:02,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:36:02,634 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:36:02,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-28 20:36:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:36:02,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-28 20:36:02,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:36:02,845 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-28 20:36:02,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:36:02,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399963149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:36:02,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:36:02,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-28 20:36:02,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399351780] [2023-11-28 20:36:02,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:36:02,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:36:02,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:36:02,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:36:02,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:36:02,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 171 [2023-11-28 20:36:02,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 187 transitions, 852 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:02,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:36:02,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 171 [2023-11-28 20:36:02,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:36:05,438 INFO L124 PetriNetUnfolderBase]: 10383/21010 cut-off events. [2023-11-28 20:36:05,438 INFO L125 PetriNetUnfolderBase]: For 36257/37179 co-relation queries the response was YES. [2023-11-28 20:36:05,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58432 conditions, 21010 events. 10383/21010 cut-off events. For 36257/37179 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 188624 event pairs, 5369 based on Foata normal form. 898/21357 useless extension candidates. Maximal degree in co-relation 54876. Up to 10765 conditions per place. [2023-11-28 20:36:05,584 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 169 selfloop transitions, 4 changer transitions 0/239 dead transitions. [2023-11-28 20:36:05,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 239 transitions, 1460 flow [2023-11-28 20:36:05,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:36:05,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:36:05,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 377 transitions. [2023-11-28 20:36:05,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7348927875243665 [2023-11-28 20:36:05,586 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 377 transitions. [2023-11-28 20:36:05,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 377 transitions. [2023-11-28 20:36:05,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:36:05,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 377 transitions. [2023-11-28 20:36:05,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 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) [2023-11-28 20:36:05,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:05,588 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:05,588 INFO L175 Difference]: Start difference. First operand has 198 places, 187 transitions, 852 flow. Second operand 3 states and 377 transitions. [2023-11-28 20:36:05,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 239 transitions, 1460 flow [2023-11-28 20:36:06,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 239 transitions, 1447 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-28 20:36:06,017 INFO L231 Difference]: Finished difference. Result has 194 places, 186 transitions, 847 flow [2023-11-28 20:36:06,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=847, PETRI_PLACES=194, PETRI_TRANSITIONS=186} [2023-11-28 20:36:06,017 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 45 predicate places. [2023-11-28 20:36:06,018 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 186 transitions, 847 flow [2023-11-28 20:36:06,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:06,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:36:06,018 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:36:06,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-28 20:36:06,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-28 20:36:06,219 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:36:06,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:36:06,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1056867170, now seen corresponding path program 1 times [2023-11-28 20:36:06,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:36:06,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832482385] [2023-11-28 20:36:06,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:36:06,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:36:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:36:06,328 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-28 20:36:06,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:36:06,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832482385] [2023-11-28 20:36:06,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832482385] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:36:06,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832002823] [2023-11-28 20:36:06,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:36:06,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:36:06,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:36:06,330 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:36:06,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-28 20:36:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:36:06,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 20:36:06,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:36:06,583 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-28 20:36:06,583 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:36:06,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832002823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:36:06,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:36:06,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-28 20:36:06,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425529991] [2023-11-28 20:36:06,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:36:06,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:36:06,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:36:06,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:36:06,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:36:06,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 171 [2023-11-28 20:36:06,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 186 transitions, 847 flow. Second operand has 5 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:06,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:36:06,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 171 [2023-11-28 20:36:06,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:36:09,477 INFO L124 PetriNetUnfolderBase]: 11097/22228 cut-off events. [2023-11-28 20:36:09,477 INFO L125 PetriNetUnfolderBase]: For 38633/39569 co-relation queries the response was YES. [2023-11-28 20:36:09,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62040 conditions, 22228 events. 11097/22228 cut-off events. For 38633/39569 co-relation queries the response was YES. Maximal size of possible extension queue 670. Compared 198153 event pairs, 2421 based on Foata normal form. 1042/22934 useless extension candidates. Maximal degree in co-relation 58758. Up to 7910 conditions per place. [2023-11-28 20:36:09,650 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 316 selfloop transitions, 5 changer transitions 0/381 dead transitions. [2023-11-28 20:36:09,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 381 transitions, 2473 flow [2023-11-28 20:36:09,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:36:09,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 20:36:09,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 735 transitions. [2023-11-28 20:36:09,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.716374269005848 [2023-11-28 20:36:09,651 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 735 transitions. [2023-11-28 20:36:09,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 735 transitions. [2023-11-28 20:36:09,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:36:09,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 735 transitions. [2023-11-28 20:36:09,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 122.5) internal successors, (735), 6 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:09,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:09,654 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:09,654 INFO L175 Difference]: Start difference. First operand has 194 places, 186 transitions, 847 flow. Second operand 6 states and 735 transitions. [2023-11-28 20:36:09,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 381 transitions, 2473 flow [2023-11-28 20:36:10,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 381 transitions, 2453 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 20:36:10,309 INFO L231 Difference]: Finished difference. Result has 195 places, 183 transitions, 841 flow [2023-11-28 20:36:10,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=841, PETRI_PLACES=195, PETRI_TRANSITIONS=183} [2023-11-28 20:36:10,310 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 46 predicate places. [2023-11-28 20:36:10,310 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 183 transitions, 841 flow [2023-11-28 20:36:10,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:10,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:36:10,311 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:36:10,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-28 20:36:10,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:36:10,511 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:36:10,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:36:10,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1596854348, now seen corresponding path program 1 times [2023-11-28 20:36:10,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:36:10,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799957994] [2023-11-28 20:36:10,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:36:10,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:36:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:36:10,592 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-28 20:36:10,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:36:10,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799957994] [2023-11-28 20:36:10,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799957994] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:36:10,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952143924] [2023-11-28 20:36:10,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:36:10,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:36:10,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:36:10,593 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:36:10,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-28 20:36:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:36:10,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-28 20:36:10,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:36:10,816 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-28 20:36:10,816 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:36:10,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952143924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:36:10,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:36:10,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-28 20:36:10,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185048323] [2023-11-28 20:36:10,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:36:10,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:36:10,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:36:10,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:36:10,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:36:10,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 171 [2023-11-28 20:36:10,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 183 transitions, 841 flow. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:10,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:36:10,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 171 [2023-11-28 20:36:10,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:36:13,174 INFO L124 PetriNetUnfolderBase]: 10617/21612 cut-off events. [2023-11-28 20:36:13,174 INFO L125 PetriNetUnfolderBase]: For 37777/38611 co-relation queries the response was YES. [2023-11-28 20:36:13,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60513 conditions, 21612 events. 10617/21612 cut-off events. For 37777/38611 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 194741 event pairs, 5499 based on Foata normal form. 870/22100 useless extension candidates. Maximal degree in co-relation 57182. Up to 10955 conditions per place. [2023-11-28 20:36:13,349 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 167 selfloop transitions, 4 changer transitions 0/232 dead transitions. [2023-11-28 20:36:13,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 232 transitions, 1423 flow [2023-11-28 20:36:13,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:36:13,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 20:36:13,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 375 transitions. [2023-11-28 20:36:13,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7309941520467836 [2023-11-28 20:36:13,350 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 375 transitions. [2023-11-28 20:36:13,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 375 transitions. [2023-11-28 20:36:13,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:36:13,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 375 transitions. [2023-11-28 20:36:13,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.0) internal successors, (375), 3 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) [2023-11-28 20:36:13,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:13,352 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:13,352 INFO L175 Difference]: Start difference. First operand has 195 places, 183 transitions, 841 flow. Second operand 3 states and 375 transitions. [2023-11-28 20:36:13,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 232 transitions, 1423 flow [2023-11-28 20:36:13,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 232 transitions, 1410 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-28 20:36:13,985 INFO L231 Difference]: Finished difference. Result has 191 places, 182 transitions, 836 flow [2023-11-28 20:36:13,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=836, PETRI_PLACES=191, PETRI_TRANSITIONS=182} [2023-11-28 20:36:13,986 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 42 predicate places. [2023-11-28 20:36:13,986 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 182 transitions, 836 flow [2023-11-28 20:36:13,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:13,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:36:13,986 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:36:13,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-28 20:36:14,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:36:14,187 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:36:14,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:36:14,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1114207442, now seen corresponding path program 1 times [2023-11-28 20:36:14,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:36:14,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309845474] [2023-11-28 20:36:14,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:36:14,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:36:14,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:36:14,282 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-28 20:36:14,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:36:14,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309845474] [2023-11-28 20:36:14,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309845474] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:36:14,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:36:14,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:36:14,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552020813] [2023-11-28 20:36:14,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:36:14,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:36:14,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:36:14,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:36:14,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:36:14,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 171 [2023-11-28 20:36:14,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 182 transitions, 836 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:14,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:36:14,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 171 [2023-11-28 20:36:14,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:36:16,739 INFO L124 PetriNetUnfolderBase]: 10643/21234 cut-off events. [2023-11-28 20:36:16,739 INFO L125 PetriNetUnfolderBase]: For 37243/38193 co-relation queries the response was YES. [2023-11-28 20:36:16,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59743 conditions, 21234 events. 10643/21234 cut-off events. For 37243/38193 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 188222 event pairs, 5593 based on Foata normal form. 824/21924 useless extension candidates. Maximal degree in co-relation 56058. Up to 11095 conditions per place. [2023-11-28 20:36:16,889 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 218 selfloop transitions, 6 changer transitions 0/284 dead transitions. [2023-11-28 20:36:16,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 284 transitions, 1831 flow [2023-11-28 20:36:16,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:36:16,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:36:16,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 488 transitions. [2023-11-28 20:36:16,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7134502923976608 [2023-11-28 20:36:16,890 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 488 transitions. [2023-11-28 20:36:16,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 488 transitions. [2023-11-28 20:36:16,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:36:16,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 488 transitions. [2023-11-28 20:36:16,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:16,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:16,892 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:16,892 INFO L175 Difference]: Start difference. First operand has 191 places, 182 transitions, 836 flow. Second operand 4 states and 488 transitions. [2023-11-28 20:36:16,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 284 transitions, 1831 flow [2023-11-28 20:36:17,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 284 transitions, 1817 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:36:17,337 INFO L231 Difference]: Finished difference. Result has 191 places, 181 transitions, 838 flow [2023-11-28 20:36:17,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=838, PETRI_PLACES=191, PETRI_TRANSITIONS=181} [2023-11-28 20:36:17,337 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 42 predicate places. [2023-11-28 20:36:17,338 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 181 transitions, 838 flow [2023-11-28 20:36:17,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:17,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:36:17,338 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:36:17,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-28 20:36:17,338 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:36:17,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:36:17,338 INFO L85 PathProgramCache]: Analyzing trace with hash 2036047052, now seen corresponding path program 1 times [2023-11-28 20:36:17,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:36:17,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445472569] [2023-11-28 20:36:17,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:36:17,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:36:17,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:36:17,459 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-28 20:36:17,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:36:17,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445472569] [2023-11-28 20:36:17,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445472569] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:36:17,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624938733] [2023-11-28 20:36:17,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:36:17,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:36:17,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:36:17,461 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:36:17,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-28 20:36:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:36:17,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 20:36:17,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:36:17,701 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-28 20:36:17,702 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:36:17,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624938733] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:36:17,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:36:17,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-11-28 20:36:17,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684606339] [2023-11-28 20:36:17,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:36:17,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:36:17,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:36:17,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:36:17,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-28 20:36:17,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 171 [2023-11-28 20:36:17,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 181 transitions, 838 flow. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:17,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:36:17,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 171 [2023-11-28 20:36:17,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:36:20,456 INFO L124 PetriNetUnfolderBase]: 10803/21632 cut-off events. [2023-11-28 20:36:20,456 INFO L125 PetriNetUnfolderBase]: For 38612/39260 co-relation queries the response was YES. [2023-11-28 20:36:20,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60997 conditions, 21632 events. 10803/21632 cut-off events. For 38612/39260 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 191473 event pairs, 6633 based on Foata normal form. 930/22382 useless extension candidates. Maximal degree in co-relation 57570. Up to 13339 conditions per place. [2023-11-28 20:36:20,591 INFO L140 encePairwiseOnDemand]: 157/171 looper letters, 256 selfloop transitions, 10 changer transitions 0/320 dead transitions. [2023-11-28 20:36:20,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 320 transitions, 2098 flow [2023-11-28 20:36:20,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:36:20,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 20:36:20,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 591 transitions. [2023-11-28 20:36:20,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6912280701754386 [2023-11-28 20:36:20,592 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 591 transitions. [2023-11-28 20:36:20,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 591 transitions. [2023-11-28 20:36:20,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:36:20,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 591 transitions. [2023-11-28 20:36:20,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 118.2) internal successors, (591), 5 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:20,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:20,595 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:20,595 INFO L175 Difference]: Start difference. First operand has 191 places, 181 transitions, 838 flow. Second operand 5 states and 591 transitions. [2023-11-28 20:36:20,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 320 transitions, 2098 flow [2023-11-28 20:36:21,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 320 transitions, 2042 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-28 20:36:21,131 INFO L231 Difference]: Finished difference. Result has 190 places, 177 transitions, 808 flow [2023-11-28 20:36:21,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=808, PETRI_PLACES=190, PETRI_TRANSITIONS=177} [2023-11-28 20:36:21,131 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 41 predicate places. [2023-11-28 20:36:21,131 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 177 transitions, 808 flow [2023-11-28 20:36:21,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:21,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:36:21,132 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:36:21,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-28 20:36:21,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:36:21,332 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:36:21,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:36:21,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1492907863, now seen corresponding path program 1 times [2023-11-28 20:36:21,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:36:21,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758538412] [2023-11-28 20:36:21,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:36:21,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:36:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:36:21,421 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-28 20:36:21,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:36:21,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758538412] [2023-11-28 20:36:21,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758538412] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:36:21,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004106226] [2023-11-28 20:36:21,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:36:21,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:36:21,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:36:21,423 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:36:21,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-28 20:36:21,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:36:21,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 20:36:21,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:36:21,751 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-28 20:36:21,752 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:36:21,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004106226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:36:21,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:36:21,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-11-28 20:36:21,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016422958] [2023-11-28 20:36:21,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:36:21,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:36:21,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:36:21,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:36:21,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-28 20:36:21,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 171 [2023-11-28 20:36:21,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 177 transitions, 808 flow. Second operand has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:21,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:36:21,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 171 [2023-11-28 20:36:21,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:36:24,384 INFO L124 PetriNetUnfolderBase]: 10417/21322 cut-off events. [2023-11-28 20:36:24,384 INFO L125 PetriNetUnfolderBase]: For 37265/37805 co-relation queries the response was YES. [2023-11-28 20:36:24,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60252 conditions, 21322 events. 10417/21322 cut-off events. For 37265/37805 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 191581 event pairs, 7191 based on Foata normal form. 592/21681 useless extension candidates. Maximal degree in co-relation 56936. Up to 14520 conditions per place. [2023-11-28 20:36:24,547 INFO L140 encePairwiseOnDemand]: 164/171 looper letters, 260 selfloop transitions, 7 changer transitions 0/321 dead transitions. [2023-11-28 20:36:24,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 321 transitions, 2143 flow [2023-11-28 20:36:24,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:36:24,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 20:36:24,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 652 transitions. [2023-11-28 20:36:24,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6354775828460039 [2023-11-28 20:36:24,549 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 652 transitions. [2023-11-28 20:36:24,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 652 transitions. [2023-11-28 20:36:24,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:36:24,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 652 transitions. [2023-11-28 20:36:24,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 108.66666666666667) internal successors, (652), 6 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:24,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:24,551 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:24,551 INFO L175 Difference]: Start difference. First operand has 190 places, 177 transitions, 808 flow. Second operand 6 states and 652 transitions. [2023-11-28 20:36:24,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 321 transitions, 2143 flow [2023-11-28 20:36:25,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 321 transitions, 2036 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-11-28 20:36:25,245 INFO L231 Difference]: Finished difference. Result has 188 places, 177 transitions, 780 flow [2023-11-28 20:36:25,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=780, PETRI_PLACES=188, PETRI_TRANSITIONS=177} [2023-11-28 20:36:25,245 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 39 predicate places. [2023-11-28 20:36:25,245 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 177 transitions, 780 flow [2023-11-28 20:36:25,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:25,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:36:25,245 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:36:25,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-28 20:36:25,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:36:25,446 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:36:25,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:36:25,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1307049063, now seen corresponding path program 1 times [2023-11-28 20:36:25,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:36:25,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919744699] [2023-11-28 20:36:25,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:36:25,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:36:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:36:25,556 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-28 20:36:25,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:36:25,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919744699] [2023-11-28 20:36:25,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919744699] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:36:25,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038291902] [2023-11-28 20:36:25,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:36:25,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:36:25,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:36:25,558 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:36:25,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-28 20:36:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:36:25,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 20:36:25,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:36:25,804 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-28 20:36:25,804 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:36:25,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038291902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:36:25,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:36:25,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2023-11-28 20:36:25,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568888930] [2023-11-28 20:36:25,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:36:25,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:36:25,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:36:25,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:36:25,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-28 20:36:25,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 171 [2023-11-28 20:36:25,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 177 transitions, 780 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:25,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:36:25,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 171 [2023-11-28 20:36:25,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:36:28,095 INFO L124 PetriNetUnfolderBase]: 10281/20780 cut-off events. [2023-11-28 20:36:28,095 INFO L125 PetriNetUnfolderBase]: For 31023/31725 co-relation queries the response was YES. [2023-11-28 20:36:28,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56866 conditions, 20780 events. 10281/20780 cut-off events. For 31023/31725 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 184508 event pairs, 6147 based on Foata normal form. 662/21249 useless extension candidates. Maximal degree in co-relation 53620. Up to 12588 conditions per place. [2023-11-28 20:36:28,245 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 164 selfloop transitions, 7 changer transitions 0/225 dead transitions. [2023-11-28 20:36:28,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 225 transitions, 1366 flow [2023-11-28 20:36:28,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:36:28,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:36:28,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 449 transitions. [2023-11-28 20:36:28,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6564327485380117 [2023-11-28 20:36:28,247 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 449 transitions. [2023-11-28 20:36:28,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 449 transitions. [2023-11-28 20:36:28,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:36:28,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 449 transitions. [2023-11-28 20:36:28,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:28,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:28,249 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:28,249 INFO L175 Difference]: Start difference. First operand has 188 places, 177 transitions, 780 flow. Second operand 4 states and 449 transitions. [2023-11-28 20:36:28,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 225 transitions, 1366 flow [2023-11-28 20:36:28,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 225 transitions, 1341 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-28 20:36:28,712 INFO L231 Difference]: Finished difference. Result has 186 places, 176 transitions, 777 flow [2023-11-28 20:36:28,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=777, PETRI_PLACES=186, PETRI_TRANSITIONS=176} [2023-11-28 20:36:28,713 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 37 predicate places. [2023-11-28 20:36:28,713 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 176 transitions, 777 flow [2023-11-28 20:36:28,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:28,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:36:28,713 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:36:28,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-28 20:36:28,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:36:28,914 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:36:28,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:36:28,914 INFO L85 PathProgramCache]: Analyzing trace with hash -964494789, now seen corresponding path program 1 times [2023-11-28 20:36:28,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:36:28,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72559840] [2023-11-28 20:36:28,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:36:28,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:36:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:36:28,998 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-28 20:36:28,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:36:28,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72559840] [2023-11-28 20:36:28,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72559840] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:36:28,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804119063] [2023-11-28 20:36:28,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:36:28,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:36:28,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:36:29,000 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:36:29,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-28 20:36:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:36:29,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 20:36:29,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:36:29,264 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-28 20:36:29,265 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:36:29,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804119063] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:36:29,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:36:29,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-11-28 20:36:29,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310585892] [2023-11-28 20:36:29,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:36:29,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:36:29,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:36:29,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:36:29,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-28 20:36:29,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 171 [2023-11-28 20:36:29,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 176 transitions, 777 flow. Second operand has 6 states, 6 states have (on average 81.83333333333333) internal successors, (491), 6 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:29,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:36:29,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 171 [2023-11-28 20:36:29,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:36:31,788 INFO L124 PetriNetUnfolderBase]: 10749/21408 cut-off events. [2023-11-28 20:36:31,788 INFO L125 PetriNetUnfolderBase]: For 33580/34125 co-relation queries the response was YES. [2023-11-28 20:36:31,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58761 conditions, 21408 events. 10749/21408 cut-off events. For 33580/34125 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 187956 event pairs, 6615 based on Foata normal form. 571/21772 useless extension candidates. Maximal degree in co-relation 55458. Up to 13472 conditions per place. [2023-11-28 20:36:31,921 INFO L140 encePairwiseOnDemand]: 163/171 looper letters, 212 selfloop transitions, 11 changer transitions 88/363 dead transitions. [2023-11-28 20:36:31,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 363 transitions, 2419 flow [2023-11-28 20:36:31,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 20:36:31,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-28 20:36:31,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 762 transitions. [2023-11-28 20:36:31,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6365914786967418 [2023-11-28 20:36:31,923 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 762 transitions. [2023-11-28 20:36:31,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 762 transitions. [2023-11-28 20:36:31,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:36:31,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 762 transitions. [2023-11-28 20:36:31,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.85714285714286) internal successors, (762), 7 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) [2023-11-28 20:36:31,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:31,925 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:31,925 INFO L175 Difference]: Start difference. First operand has 186 places, 176 transitions, 777 flow. Second operand 7 states and 762 transitions. [2023-11-28 20:36:31,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 363 transitions, 2419 flow [2023-11-28 20:36:32,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 363 transitions, 2384 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-28 20:36:32,346 INFO L231 Difference]: Finished difference. Result has 188 places, 175 transitions, 784 flow [2023-11-28 20:36:32,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=784, PETRI_PLACES=188, PETRI_TRANSITIONS=175} [2023-11-28 20:36:32,346 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 39 predicate places. [2023-11-28 20:36:32,346 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 175 transitions, 784 flow [2023-11-28 20:36:32,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 81.83333333333333) internal successors, (491), 6 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:32,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:36:32,347 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:36:32,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-28 20:36:32,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-28 20:36:32,547 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:36:32,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:36:32,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1863845288, now seen corresponding path program 1 times [2023-11-28 20:36:32,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:36:32,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211929550] [2023-11-28 20:36:32,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:36:32,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:36:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:36:32,650 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-28 20:36:32,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:36:32,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211929550] [2023-11-28 20:36:32,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211929550] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:36:32,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801699105] [2023-11-28 20:36:32,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:36:32,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:36:32,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:36:32,652 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:36:32,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-28 20:36:32,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:36:32,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 20:36:32,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:36:32,903 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-28 20:36:32,904 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:36:32,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801699105] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:36:32,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:36:32,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2023-11-28 20:36:32,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676418612] [2023-11-28 20:36:32,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:36:32,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:36:32,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:36:32,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:36:32,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-28 20:36:32,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 171 [2023-11-28 20:36:32,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 175 transitions, 784 flow. Second operand has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:32,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:36:32,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 171 [2023-11-28 20:36:32,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:36:35,161 INFO L124 PetriNetUnfolderBase]: 10095/20388 cut-off events. [2023-11-28 20:36:35,161 INFO L125 PetriNetUnfolderBase]: For 35001/35657 co-relation queries the response was YES. [2023-11-28 20:36:35,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56274 conditions, 20388 events. 10095/20388 cut-off events. For 35001/35657 co-relation queries the response was YES. Maximal size of possible extension queue 599. Compared 180413 event pairs, 6471 based on Foata normal form. 636/20823 useless extension candidates. Maximal degree in co-relation 53026. Up to 13184 conditions per place. [2023-11-28 20:36:35,273 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 165 selfloop transitions, 5 changer transitions 0/223 dead transitions. [2023-11-28 20:36:35,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 223 transitions, 1369 flow [2023-11-28 20:36:35,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:36:35,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:36:35,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 438 transitions. [2023-11-28 20:36:35,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6403508771929824 [2023-11-28 20:36:35,274 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 438 transitions. [2023-11-28 20:36:35,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 438 transitions. [2023-11-28 20:36:35,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:36:35,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 438 transitions. [2023-11-28 20:36:35,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:35,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:35,276 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:35,276 INFO L175 Difference]: Start difference. First operand has 188 places, 175 transitions, 784 flow. Second operand 4 states and 438 transitions. [2023-11-28 20:36:35,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 223 transitions, 1369 flow [2023-11-28 20:36:35,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 223 transitions, 1314 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-11-28 20:36:35,668 INFO L231 Difference]: Finished difference. Result has 185 places, 174 transitions, 759 flow [2023-11-28 20:36:35,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=759, PETRI_PLACES=185, PETRI_TRANSITIONS=174} [2023-11-28 20:36:35,668 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 36 predicate places. [2023-11-28 20:36:35,668 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 174 transitions, 759 flow [2023-11-28 20:36:35,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:35,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:36:35,669 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:36:35,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-28 20:36:35,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-28 20:36:35,869 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:36:35,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:36:35,870 INFO L85 PathProgramCache]: Analyzing trace with hash -798749454, now seen corresponding path program 1 times [2023-11-28 20:36:35,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:36:35,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788145570] [2023-11-28 20:36:35,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:36:35,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:36:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:36:35,939 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-28 20:36:35,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:36:35,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788145570] [2023-11-28 20:36:35,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788145570] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:36:35,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:36:35,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:36:35,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132576343] [2023-11-28 20:36:35,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:36:35,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:36:35,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:36:35,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:36:35,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:36:35,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 171 [2023-11-28 20:36:35,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 174 transitions, 759 flow. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:35,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:36:35,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 171 [2023-11-28 20:36:35,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:36:38,120 INFO L124 PetriNetUnfolderBase]: 10095/20238 cut-off events. [2023-11-28 20:36:38,120 INFO L125 PetriNetUnfolderBase]: For 34483/35301 co-relation queries the response was YES. [2023-11-28 20:36:38,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54303 conditions, 20238 events. 10095/20238 cut-off events. For 34483/35301 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 178795 event pairs, 5175 based on Foata normal form. 734/20713 useless extension candidates. Maximal degree in co-relation 51038. Up to 10353 conditions per place. [2023-11-28 20:36:38,251 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 216 selfloop transitions, 6 changer transitions 0/274 dead transitions. [2023-11-28 20:36:38,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 274 transitions, 1655 flow [2023-11-28 20:36:38,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:36:38,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:36:38,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 486 transitions. [2023-11-28 20:36:38,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7105263157894737 [2023-11-28 20:36:38,252 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 486 transitions. [2023-11-28 20:36:38,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 486 transitions. [2023-11-28 20:36:38,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:36:38,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 486 transitions. [2023-11-28 20:36:38,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 121.5) internal successors, (486), 4 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:38,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:38,254 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:38,254 INFO L175 Difference]: Start difference. First operand has 185 places, 174 transitions, 759 flow. Second operand 4 states and 486 transitions. [2023-11-28 20:36:38,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 274 transitions, 1655 flow [2023-11-28 20:36:38,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 274 transitions, 1643 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-28 20:36:38,603 INFO L231 Difference]: Finished difference. Result has 183 places, 173 transitions, 755 flow [2023-11-28 20:36:38,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=743, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=755, PETRI_PLACES=183, PETRI_TRANSITIONS=173} [2023-11-28 20:36:38,604 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 34 predicate places. [2023-11-28 20:36:38,604 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 173 transitions, 755 flow [2023-11-28 20:36:38,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:38,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:36:38,604 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:36:38,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-11-28 20:36:38,605 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:36:38,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:36:38,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1944628321, now seen corresponding path program 1 times [2023-11-28 20:36:38,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:36:38,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017901362] [2023-11-28 20:36:38,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:36:38,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:36:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:36:38,706 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-28 20:36:38,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:36:38,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017901362] [2023-11-28 20:36:38,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017901362] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:36:38,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154147785] [2023-11-28 20:36:38,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:36:38,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:36:38,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:36:38,708 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:36:38,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-28 20:36:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:36:38,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 20:36:38,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:36:38,988 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-28 20:36:38,988 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:36:38,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154147785] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:36:38,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:36:38,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-11-28 20:36:38,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574035175] [2023-11-28 20:36:38,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:36:38,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:36:38,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:36:38,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:36:38,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-28 20:36:39,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 171 [2023-11-28 20:36:39,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 173 transitions, 755 flow. Second operand has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:39,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:36:39,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 171 [2023-11-28 20:36:39,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:36:41,349 INFO L124 PetriNetUnfolderBase]: 10467/20648 cut-off events. [2023-11-28 20:36:41,349 INFO L125 PetriNetUnfolderBase]: For 33225/33797 co-relation queries the response was YES. [2023-11-28 20:36:41,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55879 conditions, 20648 events. 10467/20648 cut-off events. For 33225/33797 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 178594 event pairs, 7119 based on Foata normal form. 660/21015 useless extension candidates. Maximal degree in co-relation 53451. Up to 14376 conditions per place. [2023-11-28 20:36:41,472 INFO L140 encePairwiseOnDemand]: 164/171 looper letters, 264 selfloop transitions, 7 changer transitions 0/319 dead transitions. [2023-11-28 20:36:41,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 319 transitions, 1961 flow [2023-11-28 20:36:41,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:36:41,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 20:36:41,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 651 transitions. [2023-11-28 20:36:41,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6345029239766082 [2023-11-28 20:36:41,473 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 651 transitions. [2023-11-28 20:36:41,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 651 transitions. [2023-11-28 20:36:41,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:36:41,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 651 transitions. [2023-11-28 20:36:41,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 108.5) internal successors, (651), 6 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:41,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:41,475 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:41,475 INFO L175 Difference]: Start difference. First operand has 183 places, 173 transitions, 755 flow. Second operand 6 states and 651 transitions. [2023-11-28 20:36:41,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 319 transitions, 1961 flow [2023-11-28 20:36:41,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 319 transitions, 1919 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-28 20:36:41,810 INFO L231 Difference]: Finished difference. Result has 180 places, 171 transitions, 713 flow [2023-11-28 20:36:41,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=713, PETRI_PLACES=180, PETRI_TRANSITIONS=171} [2023-11-28 20:36:41,811 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 31 predicate places. [2023-11-28 20:36:41,811 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 171 transitions, 713 flow [2023-11-28 20:36:41,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:41,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:36:41,811 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:36:41,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-28 20:36:42,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-28 20:36:42,012 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-11-28 20:36:42,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:36:42,012 INFO L85 PathProgramCache]: Analyzing trace with hash -153934021, now seen corresponding path program 1 times [2023-11-28 20:36:42,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:36:42,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055343424] [2023-11-28 20:36:42,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:36:42,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:36:42,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:36:42,108 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-28 20:36:42,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:36:42,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055343424] [2023-11-28 20:36:42,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055343424] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:36:42,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621591076] [2023-11-28 20:36:42,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:36:42,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:36:42,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:36:42,110 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:36:42,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-28 20:36:42,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:36:42,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 20:36:42,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:36:42,409 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-28 20:36:42,409 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:36:42,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621591076] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:36:42,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:36:42,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-11-28 20:36:42,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5845247] [2023-11-28 20:36:42,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:36:42,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:36:42,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:36:42,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:36:42,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-28 20:36:42,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 171 [2023-11-28 20:36:42,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 171 transitions, 713 flow. Second operand has 6 states, 6 states have (on average 82.16666666666667) internal successors, (493), 6 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:42,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:36:42,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 171 [2023-11-28 20:36:42,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:36:44,837 INFO L124 PetriNetUnfolderBase]: 10839/20776 cut-off events. [2023-11-28 20:36:44,837 INFO L125 PetriNetUnfolderBase]: For 27063/27663 co-relation queries the response was YES. [2023-11-28 20:36:44,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54853 conditions, 20776 events. 10839/20776 cut-off events. For 27063/27663 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 175446 event pairs, 6795 based on Foata normal form. 670/21146 useless extension candidates. Maximal degree in co-relation 52987. Up to 13780 conditions per place. [2023-11-28 20:36:44,928 INFO L140 encePairwiseOnDemand]: 163/171 looper letters, 0 selfloop transitions, 0 changer transitions 366/366 dead transitions. [2023-11-28 20:36:44,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 366 transitions, 2247 flow [2023-11-28 20:36:44,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 20:36:44,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-28 20:36:44,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 762 transitions. [2023-11-28 20:36:44,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6365914786967418 [2023-11-28 20:36:44,930 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 762 transitions. [2023-11-28 20:36:44,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 762 transitions. [2023-11-28 20:36:44,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:36:44,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 762 transitions. [2023-11-28 20:36:44,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.85714285714286) internal successors, (762), 7 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) [2023-11-28 20:36:44,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:44,933 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:44,933 INFO L175 Difference]: Start difference. First operand has 180 places, 171 transitions, 713 flow. Second operand 7 states and 762 transitions. [2023-11-28 20:36:44,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 366 transitions, 2247 flow [2023-11-28 20:36:45,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 366 transitions, 2234 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-28 20:36:45,144 INFO L231 Difference]: Finished difference. Result has 181 places, 0 transitions, 0 flow [2023-11-28 20:36:45,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=181, PETRI_TRANSITIONS=0} [2023-11-28 20:36:45,144 INFO L281 CegarLoopForPetriNet]: 149 programPoint places, 32 predicate places. [2023-11-28 20:36:45,145 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 0 transitions, 0 flow [2023-11-28 20:36:45,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.16666666666667) internal successors, (493), 6 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:36:45,146 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (79 of 80 remaining) [2023-11-28 20:36:45,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (78 of 80 remaining) [2023-11-28 20:36:45,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (77 of 80 remaining) [2023-11-28 20:36:45,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (76 of 80 remaining) [2023-11-28 20:36:45,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (75 of 80 remaining) [2023-11-28 20:36:45,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (74 of 80 remaining) [2023-11-28 20:36:45,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (73 of 80 remaining) [2023-11-28 20:36:45,148 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (72 of 80 remaining) [2023-11-28 20:36:45,148 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (71 of 80 remaining) [2023-11-28 20:36:45,148 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (70 of 80 remaining) [2023-11-28 20:36:45,148 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (69 of 80 remaining) [2023-11-28 20:36:45,148 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (68 of 80 remaining) [2023-11-28 20:36:45,148 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (67 of 80 remaining) [2023-11-28 20:36:45,148 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (66 of 80 remaining) [2023-11-28 20:36:45,148 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (65 of 80 remaining) [2023-11-28 20:36:45,148 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (64 of 80 remaining) [2023-11-28 20:36:45,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (63 of 80 remaining) [2023-11-28 20:36:45,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (62 of 80 remaining) [2023-11-28 20:36:45,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (61 of 80 remaining) [2023-11-28 20:36:45,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (60 of 80 remaining) [2023-11-28 20:36:45,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (59 of 80 remaining) [2023-11-28 20:36:45,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (58 of 80 remaining) [2023-11-28 20:36:45,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 80 remaining) [2023-11-28 20:36:45,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (56 of 80 remaining) [2023-11-28 20:36:45,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (55 of 80 remaining) [2023-11-28 20:36:45,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (54 of 80 remaining) [2023-11-28 20:36:45,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 80 remaining) [2023-11-28 20:36:45,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 80 remaining) [2023-11-28 20:36:45,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 80 remaining) [2023-11-28 20:36:45,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 80 remaining) [2023-11-28 20:36:45,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 80 remaining) [2023-11-28 20:36:45,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 80 remaining) [2023-11-28 20:36:45,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 80 remaining) [2023-11-28 20:36:45,150 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 80 remaining) [2023-11-28 20:36:45,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 80 remaining) [2023-11-28 20:36:45,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 80 remaining) [2023-11-28 20:36:45,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 80 remaining) [2023-11-28 20:36:45,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 80 remaining) [2023-11-28 20:36:45,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 80 remaining) [2023-11-28 20:36:45,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 80 remaining) [2023-11-28 20:36:45,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 80 remaining) [2023-11-28 20:36:45,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 80 remaining) [2023-11-28 20:36:45,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 80 remaining) [2023-11-28 20:36:45,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 80 remaining) [2023-11-28 20:36:45,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 80 remaining) [2023-11-28 20:36:45,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 80 remaining) [2023-11-28 20:36:45,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 80 remaining) [2023-11-28 20:36:45,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 80 remaining) [2023-11-28 20:36:45,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 80 remaining) [2023-11-28 20:36:45,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 80 remaining) [2023-11-28 20:36:45,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 80 remaining) [2023-11-28 20:36:45,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 80 remaining) [2023-11-28 20:36:45,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 80 remaining) [2023-11-28 20:36:45,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 80 remaining) [2023-11-28 20:36:45,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 80 remaining) [2023-11-28 20:36:45,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 80 remaining) [2023-11-28 20:36:45,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 80 remaining) [2023-11-28 20:36:45,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 80 remaining) [2023-11-28 20:36:45,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 80 remaining) [2023-11-28 20:36:45,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 80 remaining) [2023-11-28 20:36:45,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 80 remaining) [2023-11-28 20:36:45,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 80 remaining) [2023-11-28 20:36:45,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 80 remaining) [2023-11-28 20:36:45,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 80 remaining) [2023-11-28 20:36:45,154 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 80 remaining) [2023-11-28 20:36:45,154 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 80 remaining) [2023-11-28 20:36:45,154 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 80 remaining) [2023-11-28 20:36:45,154 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 80 remaining) [2023-11-28 20:36:45,154 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 80 remaining) [2023-11-28 20:36:45,154 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 80 remaining) [2023-11-28 20:36:45,154 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 80 remaining) [2023-11-28 20:36:45,154 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 80 remaining) [2023-11-28 20:36:45,154 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 80 remaining) [2023-11-28 20:36:45,154 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 80 remaining) [2023-11-28 20:36:45,155 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 80 remaining) [2023-11-28 20:36:45,155 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 80 remaining) [2023-11-28 20:36:45,155 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 80 remaining) [2023-11-28 20:36:45,155 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 80 remaining) [2023-11-28 20:36:45,155 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 80 remaining) [2023-11-28 20:36:45,155 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 80 remaining) [2023-11-28 20:36:45,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-28 20:36:45,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-28 20:36:45,356 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:36:45,360 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-28 20:36:45,360 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-28 20:36:45,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:36:45 BasicIcfg [2023-11-28 20:36:45,365 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-28 20:36:45,365 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-28 20:36:45,365 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-28 20:36:45,365 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-28 20:36:45,366 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:35:01" (3/4) ... [2023-11-28 20:36:45,367 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-28 20:36:45,369 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-28 20:36:45,370 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-28 20:36:45,378 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 156 nodes and edges [2023-11-28 20:36:45,378 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2023-11-28 20:36:45,379 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-28 20:36:45,379 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-28 20:36:45,471 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-28 20:36:45,472 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-28 20:36:45,472 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-28 20:36:45,473 INFO L158 Benchmark]: Toolchain (without parser) took 105414.26ms. Allocated memory was 165.7MB in the beginning and 3.5GB in the end (delta: 3.4GB). Free memory was 129.6MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 970.8MB. Max. memory is 16.1GB. [2023-11-28 20:36:45,473 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 165.7MB. Free memory is still 138.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-28 20:36:45,473 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.03ms. Allocated memory is still 165.7MB. Free memory was 129.1MB in the beginning and 115.6MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-28 20:36:45,474 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.71ms. Allocated memory is still 165.7MB. Free memory was 115.6MB in the beginning and 112.3MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-28 20:36:45,474 INFO L158 Benchmark]: Boogie Preprocessor took 71.21ms. Allocated memory is still 165.7MB. Free memory was 112.0MB in the beginning and 107.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-28 20:36:45,475 INFO L158 Benchmark]: RCFGBuilder took 1279.72ms. Allocated memory is still 165.7MB. Free memory was 107.8MB in the beginning and 97.1MB in the end (delta: 10.6MB). Peak memory consumption was 65.2MB. Max. memory is 16.1GB. [2023-11-28 20:36:45,475 INFO L158 Benchmark]: TraceAbstraction took 103628.28ms. Allocated memory was 165.7MB in the beginning and 3.5GB in the end (delta: 3.4GB). Free memory was 97.1MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. [2023-11-28 20:36:45,475 INFO L158 Benchmark]: Witness Printer took 107.02ms. Allocated memory is still 3.5GB. Free memory was 2.6GB in the beginning and 2.5GB in the end (delta: 6.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-28 20:36:45,477 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 165.7MB. Free memory is still 138.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 263.03ms. Allocated memory is still 165.7MB. Free memory was 129.1MB in the beginning and 115.6MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.71ms. Allocated memory is still 165.7MB. Free memory was 115.6MB in the beginning and 112.3MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.21ms. Allocated memory is still 165.7MB. Free memory was 112.0MB in the beginning and 107.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1279.72ms. Allocated memory is still 165.7MB. Free memory was 107.8MB in the beginning and 97.1MB in the end (delta: 10.6MB). Peak memory consumption was 65.2MB. Max. memory is 16.1GB. * TraceAbstraction took 103628.28ms. Allocated memory was 165.7MB in the beginning and 3.5GB in the end (delta: 3.4GB). Free memory was 97.1MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. * Witness Printer took 107.02ms. Allocated memory is still 3.5GB. Free memory was 2.6GB in the beginning and 2.5GB in the end (delta: 6.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 62]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 62]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 138]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 138]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 138]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 138]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 127]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 127]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 270 locations, 80 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 103.5s, OverallIterations: 40, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 91.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5651 SdHoareTripleChecker+Valid, 10.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4912 mSDsluCounter, 571 SdHoareTripleChecker+Invalid, 8.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 365 mSDsCounter, 408 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14984 IncrementalHoareTripleChecker+Invalid, 15392 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 408 mSolverCounterUnsat, 206 mSDtfsCounter, 14984 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 971 GetRequests, 717 SyntacticMatches, 0 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=867occurred in iteration=27, InterpolantAutomatonStates: 210, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 2114 NumberOfCodeBlocks, 2084 NumberOfCodeBlocksAsserted, 57 NumberOfCheckSat, 2127 ConstructedInterpolants, 0 QuantifiedInterpolants, 5005 SizeOfPredicates, 36 NumberOfNonLiveVariables, 4333 ConjunctsInSsa, 84 ConjunctsInUnsatCore, 61 InterpolantComputations, 36 PerfectInterpolantSequences, 2583/2717 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 42 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-28 20:36:45,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ce170cb-11c0-4a0e-abf2-124b2bd49c09/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE