./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-match-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b90558a-3ce0-452c-a722-fb18ab9e55bb/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b90558a-3ce0-452c-a722-fb18ab9e55bb/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_5b90558a-3ce0-452c-a722-fb18ab9e55bb/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b90558a-3ce0-452c-a722-fb18ab9e55bb/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-match-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b90558a-3ce0-452c-a722-fb18ab9e55bb/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_5b90558a-3ce0-452c-a722-fb18ab9e55bb/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 58a3707e98508adde0e15b9d8e43fa1e77573e5478a67cbc9ef6d2cbcb9307e7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:51:48,840 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:51:48,902 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b90558a-3ce0-452c-a722-fb18ab9e55bb/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 05:51:48,907 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:51:48,907 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:51:48,930 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:51:48,930 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:51:48,931 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:51:48,931 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:51:48,932 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:51:48,932 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:51:48,933 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:51:48,934 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:51:48,934 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:51:48,935 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:51:48,935 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:51:48,936 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:51:48,936 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:51:48,937 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:51:48,937 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:51:48,938 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:51:48,940 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:51:48,941 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:51:48,941 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:51:48,942 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 05:51:48,942 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 05:51:48,943 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:51:48,943 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:51:48,944 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:51:48,944 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:51:48,945 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:51:48,945 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:51:48,945 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:51:48,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:51:48,946 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:51:48,946 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:51:48,946 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:51:48,946 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:51:48,946 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:51:48,947 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:51:48,947 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:51:48,947 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:51:48,947 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:51:48,947 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:51:48,948 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_5b90558a-3ce0-452c-a722-fb18ab9e55bb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b90558a-3ce0-452c-a722-fb18ab9e55bb/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58a3707e98508adde0e15b9d8e43fa1e77573e5478a67cbc9ef6d2cbcb9307e7 [2023-11-29 05:51:49,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:51:49,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:51:49,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:51:49,166 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:51:49,166 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:51:49,167 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b90558a-3ce0-452c-a722-fb18ab9e55bb/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/chl-match-trans.wvr.c [2023-11-29 05:51:51,975 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:51:52,162 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:51:52,162 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b90558a-3ce0-452c-a722-fb18ab9e55bb/sv-benchmarks/c/weaver/chl-match-trans.wvr.c [2023-11-29 05:51:52,170 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b90558a-3ce0-452c-a722-fb18ab9e55bb/bin/uautomizer-verify-BQ2R08f2Ya/data/4f098de53/67e6a1e0e5934504ba386bc6900a0424/FLAG1b33b469b [2023-11-29 05:51:52,181 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b90558a-3ce0-452c-a722-fb18ab9e55bb/bin/uautomizer-verify-BQ2R08f2Ya/data/4f098de53/67e6a1e0e5934504ba386bc6900a0424 [2023-11-29 05:51:52,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:51:52,184 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:51:52,185 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:51:52,185 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:51:52,190 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:51:52,191 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:51:52" (1/1) ... [2023-11-29 05:51:52,192 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68bf5a9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:51:52, skipping insertion in model container [2023-11-29 05:51:52,192 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:51:52" (1/1) ... [2023-11-29 05:51:52,220 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:51:52,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:51:52,404 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:51:52,433 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:51:52,450 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:51:52,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:51:52 WrapperNode [2023-11-29 05:51:52,451 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:51:52,452 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:51:52,452 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:51:52,452 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:51:52,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:51:52" (1/1) ... [2023-11-29 05:51:52,470 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:51:52" (1/1) ... [2023-11-29 05:51:52,506 INFO L138 Inliner]: procedures = 23, calls = 34, calls flagged for inlining = 12, calls inlined = 22, statements flattened = 299 [2023-11-29 05:51:52,507 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:51:52,508 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:51:52,508 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:51:52,508 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:51:52,520 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:51:52" (1/1) ... [2023-11-29 05:51:52,520 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:51:52" (1/1) ... [2023-11-29 05:51:52,525 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:51:52" (1/1) ... [2023-11-29 05:51:52,546 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-29 05:51:52,546 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:51:52" (1/1) ... [2023-11-29 05:51:52,546 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:51:52" (1/1) ... [2023-11-29 05:51:52,558 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:51:52" (1/1) ... [2023-11-29 05:51:52,562 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:51:52" (1/1) ... [2023-11-29 05:51:52,564 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:51:52" (1/1) ... [2023-11-29 05:51:52,567 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:51:52" (1/1) ... [2023-11-29 05:51:52,571 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:51:52,572 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:51:52,573 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:51:52,573 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:51:52,574 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:51:52" (1/1) ... [2023-11-29 05:51:52,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:51:52,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b90558a-3ce0-452c-a722-fb18ab9e55bb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:51:52,602 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b90558a-3ce0-452c-a722-fb18ab9e55bb/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:51:52,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b90558a-3ce0-452c-a722-fb18ab9e55bb/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:51:52,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:51:52,647 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 05:51:52,647 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 05:51:52,648 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 05:51:52,648 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 05:51:52,648 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 05:51:52,648 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 05:51:52,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:51:52,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 05:51:52,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 05:51:52,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 05:51:52,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 05:51:52,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 05:51:52,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 05:51:52,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 05:51:52,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 05:51:52,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:51:52,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:51:52,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 05:51:52,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 05:51:52,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 05:51:52,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 05:51:52,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 05:51:52,653 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 05:51:52,803 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:51:52,806 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:51:53,314 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:51:53,587 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:51:53,587 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 05:51:53,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:51:53 BoogieIcfgContainer [2023-11-29 05:51:53,588 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:51:53,590 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:51:53,590 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:51:53,592 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:51:53,593 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:51:52" (1/3) ... [2023-11-29 05:51:53,593 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf1b1c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:51:53, skipping insertion in model container [2023-11-29 05:51:53,593 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:51:52" (2/3) ... [2023-11-29 05:51:53,594 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf1b1c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:51:53, skipping insertion in model container [2023-11-29 05:51:53,594 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:51:53" (3/3) ... [2023-11-29 05:51:53,595 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-trans.wvr.c [2023-11-29 05:51:53,603 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 05:51:53,610 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:51:53,611 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2023-11-29 05:51:53,611 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 05:51:53,712 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 05:51:53,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 127 transitions, 275 flow [2023-11-29 05:51:53,805 INFO L124 PetriNetUnfolderBase]: 12/124 cut-off events. [2023-11-29 05:51:53,805 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 05:51:53,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 124 events. 12/124 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 496 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 120. Up to 2 conditions per place. [2023-11-29 05:51:53,811 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 127 transitions, 275 flow [2023-11-29 05:51:53,819 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 122 transitions, 259 flow [2023-11-29 05:51:53,831 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:51:53,840 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;@4cc534a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:51:53,840 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2023-11-29 05:51:53,845 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:51:53,845 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-11-29 05:51:53,845 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:51:53,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:51:53,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 05:51:53,847 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 05:51:53,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:51:53,852 INFO L85 PathProgramCache]: Analyzing trace with hash 845368318, now seen corresponding path program 1 times [2023-11-29 05:51:53,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:51:53,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553417481] [2023-11-29 05:51:53,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:51:53,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:51:53,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:54,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:51:54,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:51:54,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553417481] [2023-11-29 05:51:54,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553417481] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:51:54,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:51:54,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:51:54,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148616244] [2023-11-29 05:51:54,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:51:54,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:51:54,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:51:54,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:51:54,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:51:54,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 127 [2023-11-29 05:51:54,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 122 transitions, 259 flow. Second operand has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:51:54,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:51:54,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 127 [2023-11-29 05:51:54,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:51:59,260 INFO L124 PetriNetUnfolderBase]: 23597/41014 cut-off events. [2023-11-29 05:51:59,260 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-11-29 05:51:59,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73039 conditions, 41014 events. 23597/41014 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 1576. Compared 369558 event pairs, 5882 based on Foata normal form. 1256/36900 useless extension candidates. Maximal degree in co-relation 70832. Up to 15195 conditions per place. [2023-11-29 05:51:59,750 INFO L140 encePairwiseOnDemand]: 112/127 looper letters, 106 selfloop transitions, 10 changer transitions 0/182 dead transitions. [2023-11-29 05:51:59,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 182 transitions, 623 flow [2023-11-29 05:51:59,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:51:59,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:51:59,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 398 transitions. [2023-11-29 05:51:59,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7834645669291339 [2023-11-29 05:51:59,770 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 398 transitions. [2023-11-29 05:51:59,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 398 transitions. [2023-11-29 05:51:59,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:51:59,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 398 transitions. [2023-11-29 05:51:59,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:51:59,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:51:59,788 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:51:59,790 INFO L175 Difference]: Start difference. First operand has 120 places, 122 transitions, 259 flow. Second operand 4 states and 398 transitions. [2023-11-29 05:51:59,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 182 transitions, 623 flow [2023-11-29 05:51:59,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 182 transitions, 608 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 05:51:59,834 INFO L231 Difference]: Finished difference. Result has 119 places, 126 transitions, 316 flow [2023-11-29 05:51:59,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=316, PETRI_PLACES=119, PETRI_TRANSITIONS=126} [2023-11-29 05:51:59,841 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, -1 predicate places. [2023-11-29 05:51:59,842 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 126 transitions, 316 flow [2023-11-29 05:51:59,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:51:59,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:51:59,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 05:51:59,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:51:59,843 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 05:51:59,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:51:59,844 INFO L85 PathProgramCache]: Analyzing trace with hash 436615070, now seen corresponding path program 1 times [2023-11-29 05:51:59,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:51:59,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81971962] [2023-11-29 05:51:59,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:51:59,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:51:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:51:59,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:51:59,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:51:59,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81971962] [2023-11-29 05:51:59,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81971962] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:51:59,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:51:59,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:51:59,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303512140] [2023-11-29 05:51:59,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:51:59,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:51:59,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:51:59,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:51:59,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:52:00,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 127 [2023-11-29 05:52:00,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 126 transitions, 316 flow. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:00,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:52:00,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 127 [2023-11-29 05:52:00,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:52:03,421 INFO L124 PetriNetUnfolderBase]: 16775/33048 cut-off events. [2023-11-29 05:52:03,422 INFO L125 PetriNetUnfolderBase]: For 6785/7231 co-relation queries the response was YES. [2023-11-29 05:52:03,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61260 conditions, 33048 events. 16775/33048 cut-off events. For 6785/7231 co-relation queries the response was YES. Maximal size of possible extension queue 1342. Compared 327552 event pairs, 7403 based on Foata normal form. 446/28831 useless extension candidates. Maximal degree in co-relation 42030. Up to 11298 conditions per place. [2023-11-29 05:52:03,627 INFO L140 encePairwiseOnDemand]: 120/127 looper letters, 73 selfloop transitions, 7 changer transitions 0/154 dead transitions. [2023-11-29 05:52:03,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 154 transitions, 537 flow [2023-11-29 05:52:03,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:52:03,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:52:03,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2023-11-29 05:52:03,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7421259842519685 [2023-11-29 05:52:03,632 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2023-11-29 05:52:03,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2023-11-29 05:52:03,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:52:03,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2023-11-29 05:52:03,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:03,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:03,639 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:03,640 INFO L175 Difference]: Start difference. First operand has 119 places, 126 transitions, 316 flow. Second operand 4 states and 377 transitions. [2023-11-29 05:52:03,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 154 transitions, 537 flow [2023-11-29 05:52:03,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 154 transitions, 537 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 05:52:03,667 INFO L231 Difference]: Finished difference. Result has 122 places, 126 transitions, 340 flow [2023-11-29 05:52:03,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=340, PETRI_PLACES=122, PETRI_TRANSITIONS=126} [2023-11-29 05:52:03,669 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 2 predicate places. [2023-11-29 05:52:03,669 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 126 transitions, 340 flow [2023-11-29 05:52:03,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:03,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:52:03,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:52:03,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 05:52:03,671 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 05:52:03,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:03,672 INFO L85 PathProgramCache]: Analyzing trace with hash 584210920, now seen corresponding path program 1 times [2023-11-29 05:52:03,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:52:03,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643726689] [2023-11-29 05:52:03,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:03,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:52:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:03,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:52:03,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:52:03,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643726689] [2023-11-29 05:52:03,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643726689] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:52:03,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:52:03,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:52:03,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775383946] [2023-11-29 05:52:03,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:52:03,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:52:03,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:52:03,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:52:03,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:52:03,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 127 [2023-11-29 05:52:03,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 126 transitions, 340 flow. Second operand has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:03,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:52:03,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 127 [2023-11-29 05:52:03,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:52:09,652 INFO L124 PetriNetUnfolderBase]: 33723/60017 cut-off events. [2023-11-29 05:52:09,653 INFO L125 PetriNetUnfolderBase]: For 28800/31232 co-relation queries the response was YES. [2023-11-29 05:52:09,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123004 conditions, 60017 events. 33723/60017 cut-off events. For 28800/31232 co-relation queries the response was YES. Maximal size of possible extension queue 2198. Compared 582779 event pairs, 8613 based on Foata normal form. 3082/54657 useless extension candidates. Maximal degree in co-relation 49670. Up to 22108 conditions per place. [2023-11-29 05:52:10,050 INFO L140 encePairwiseOnDemand]: 112/127 looper letters, 121 selfloop transitions, 10 changer transitions 0/196 dead transitions. [2023-11-29 05:52:10,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 196 transitions, 854 flow [2023-11-29 05:52:10,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:52:10,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:52:10,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 398 transitions. [2023-11-29 05:52:10,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7834645669291339 [2023-11-29 05:52:10,054 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 398 transitions. [2023-11-29 05:52:10,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 398 transitions. [2023-11-29 05:52:10,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:52:10,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 398 transitions. [2023-11-29 05:52:10,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:10,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:10,060 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:10,060 INFO L175 Difference]: Start difference. First operand has 122 places, 126 transitions, 340 flow. Second operand 4 states and 398 transitions. [2023-11-29 05:52:10,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 196 transitions, 854 flow [2023-11-29 05:52:10,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 196 transitions, 836 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:52:10,262 INFO L231 Difference]: Finished difference. Result has 124 places, 130 transitions, 398 flow [2023-11-29 05:52:10,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=398, PETRI_PLACES=124, PETRI_TRANSITIONS=130} [2023-11-29 05:52:10,264 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 4 predicate places. [2023-11-29 05:52:10,265 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 130 transitions, 398 flow [2023-11-29 05:52:10,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:10,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:52:10,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:52:10,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 05:52:10,266 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 05:52:10,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:10,267 INFO L85 PathProgramCache]: Analyzing trace with hash 650134498, now seen corresponding path program 1 times [2023-11-29 05:52:10,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:52:10,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191670884] [2023-11-29 05:52:10,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:10,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:52:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:10,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:52:10,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:52:10,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191670884] [2023-11-29 05:52:10,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191670884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:52:10,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:52:10,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:52:10,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982334817] [2023-11-29 05:52:10,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:52:10,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:52:10,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:52:10,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:52:10,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:52:10,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 127 [2023-11-29 05:52:10,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 130 transitions, 398 flow. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:10,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:52:10,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 127 [2023-11-29 05:52:10,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:52:15,781 INFO L124 PetriNetUnfolderBase]: 25803/48377 cut-off events. [2023-11-29 05:52:15,781 INFO L125 PetriNetUnfolderBase]: For 31961/34346 co-relation queries the response was YES. [2023-11-29 05:52:15,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106061 conditions, 48377 events. 25803/48377 cut-off events. For 31961/34346 co-relation queries the response was YES. Maximal size of possible extension queue 1824. Compared 486450 event pairs, 9999 based on Foata normal form. 1831/43840 useless extension candidates. Maximal degree in co-relation 42821. Up to 18330 conditions per place. [2023-11-29 05:52:16,198 INFO L140 encePairwiseOnDemand]: 121/127 looper letters, 83 selfloop transitions, 7 changer transitions 0/160 dead transitions. [2023-11-29 05:52:16,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 160 transitions, 673 flow [2023-11-29 05:52:16,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:52:16,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:52:16,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 368 transitions. [2023-11-29 05:52:16,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7244094488188977 [2023-11-29 05:52:16,201 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 368 transitions. [2023-11-29 05:52:16,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 368 transitions. [2023-11-29 05:52:16,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:52:16,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 368 transitions. [2023-11-29 05:52:16,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:16,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:16,206 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:16,206 INFO L175 Difference]: Start difference. First operand has 124 places, 130 transitions, 398 flow. Second operand 4 states and 368 transitions. [2023-11-29 05:52:16,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 160 transitions, 673 flow [2023-11-29 05:52:16,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 160 transitions, 673 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 05:52:16,581 INFO L231 Difference]: Finished difference. Result has 126 places, 129 transitions, 408 flow [2023-11-29 05:52:16,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=408, PETRI_PLACES=126, PETRI_TRANSITIONS=129} [2023-11-29 05:52:16,582 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 6 predicate places. [2023-11-29 05:52:16,582 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 129 transitions, 408 flow [2023-11-29 05:52:16,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:16,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:52:16,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:52:16,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 05:52:16,584 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 05:52:16,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:16,584 INFO L85 PathProgramCache]: Analyzing trace with hash 930670361, now seen corresponding path program 1 times [2023-11-29 05:52:16,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:52:16,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46837810] [2023-11-29 05:52:16,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:16,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:52:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:16,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:52:16,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:52:16,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46837810] [2023-11-29 05:52:16,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46837810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:52:16,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:52:16,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:52:16,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544205376] [2023-11-29 05:52:16,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:52:16,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:52:16,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:52:16,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:52:16,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:52:16,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 127 [2023-11-29 05:52:16,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 129 transitions, 408 flow. Second operand has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:16,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:52:16,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 127 [2023-11-29 05:52:16,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:52:22,025 INFO L124 PetriNetUnfolderBase]: 25987/50524 cut-off events. [2023-11-29 05:52:22,025 INFO L125 PetriNetUnfolderBase]: For 36400/38246 co-relation queries the response was YES. [2023-11-29 05:52:22,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110266 conditions, 50524 events. 25987/50524 cut-off events. For 36400/38246 co-relation queries the response was YES. Maximal size of possible extension queue 1898. Compared 526753 event pairs, 8525 based on Foata normal form. 1379/45437 useless extension candidates. Maximal degree in co-relation 58027. Up to 18406 conditions per place. [2023-11-29 05:52:22,460 INFO L140 encePairwiseOnDemand]: 120/127 looper letters, 83 selfloop transitions, 7 changer transitions 0/162 dead transitions. [2023-11-29 05:52:22,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 162 transitions, 713 flow [2023-11-29 05:52:22,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:52:22,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:52:22,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2023-11-29 05:52:22,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7421259842519685 [2023-11-29 05:52:22,463 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2023-11-29 05:52:22,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2023-11-29 05:52:22,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:52:22,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2023-11-29 05:52:22,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:22,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:22,468 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:22,468 INFO L175 Difference]: Start difference. First operand has 126 places, 129 transitions, 408 flow. Second operand 4 states and 377 transitions. [2023-11-29 05:52:22,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 162 transitions, 713 flow [2023-11-29 05:52:23,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 162 transitions, 693 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 05:52:23,015 INFO L231 Difference]: Finished difference. Result has 126 places, 129 transitions, 418 flow [2023-11-29 05:52:23,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=418, PETRI_PLACES=126, PETRI_TRANSITIONS=129} [2023-11-29 05:52:23,016 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 6 predicate places. [2023-11-29 05:52:23,016 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 129 transitions, 418 flow [2023-11-29 05:52:23,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:23,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:52:23,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:52:23,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 05:52:23,017 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 05:52:23,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:23,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1320666047, now seen corresponding path program 1 times [2023-11-29 05:52:23,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:52:23,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749964171] [2023-11-29 05:52:23,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:23,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:52:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:23,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:52:23,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:52:23,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749964171] [2023-11-29 05:52:23,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749964171] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:52:23,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:52:23,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:52:23,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794894472] [2023-11-29 05:52:23,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:52:23,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:52:23,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:52:23,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:52:23,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:52:23,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 127 [2023-11-29 05:52:23,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 129 transitions, 418 flow. Second operand has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:23,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:52:23,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 127 [2023-11-29 05:52:23,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:52:28,910 INFO L124 PetriNetUnfolderBase]: 31413/63308 cut-off events. [2023-11-29 05:52:28,910 INFO L125 PetriNetUnfolderBase]: For 50952/52880 co-relation queries the response was YES. [2023-11-29 05:52:29,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137436 conditions, 63308 events. 31413/63308 cut-off events. For 50952/52880 co-relation queries the response was YES. Maximal size of possible extension queue 2425. Compared 697418 event pairs, 12594 based on Foata normal form. 1810/56863 useless extension candidates. Maximal degree in co-relation 104373. Up to 17530 conditions per place. [2023-11-29 05:52:29,322 INFO L140 encePairwiseOnDemand]: 118/127 looper letters, 119 selfloop transitions, 9 changer transitions 0/193 dead transitions. [2023-11-29 05:52:29,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 193 transitions, 906 flow [2023-11-29 05:52:29,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:52:29,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:52:29,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 390 transitions. [2023-11-29 05:52:29,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7677165354330708 [2023-11-29 05:52:29,325 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 390 transitions. [2023-11-29 05:52:29,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 390 transitions. [2023-11-29 05:52:29,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:52:29,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 390 transitions. [2023-11-29 05:52:29,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:29,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:29,328 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:29,328 INFO L175 Difference]: Start difference. First operand has 126 places, 129 transitions, 418 flow. Second operand 4 states and 390 transitions. [2023-11-29 05:52:29,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 193 transitions, 906 flow [2023-11-29 05:52:29,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 193 transitions, 888 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:52:29,558 INFO L231 Difference]: Finished difference. Result has 127 places, 127 transitions, 416 flow [2023-11-29 05:52:29,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=416, PETRI_PLACES=127, PETRI_TRANSITIONS=127} [2023-11-29 05:52:29,559 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 7 predicate places. [2023-11-29 05:52:29,559 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 127 transitions, 416 flow [2023-11-29 05:52:29,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:29,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:52:29,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:52:29,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 05:52:29,559 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 05:52:29,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:29,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1320667072, now seen corresponding path program 1 times [2023-11-29 05:52:29,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:52:29,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219487346] [2023-11-29 05:52:29,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:29,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:52:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:29,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:52:29,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:52:29,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219487346] [2023-11-29 05:52:29,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219487346] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:52:29,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:52:29,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:52:29,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992566015] [2023-11-29 05:52:29,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:52:29,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:52:29,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:52:29,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:52:29,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:52:29,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 127 [2023-11-29 05:52:29,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 127 transitions, 416 flow. Second operand has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:29,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:52:29,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 127 [2023-11-29 05:52:29,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:52:35,848 INFO L124 PetriNetUnfolderBase]: 43396/69683 cut-off events. [2023-11-29 05:52:35,848 INFO L125 PetriNetUnfolderBase]: For 55377/58789 co-relation queries the response was YES. [2023-11-29 05:52:36,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167761 conditions, 69683 events. 43396/69683 cut-off events. For 55377/58789 co-relation queries the response was YES. Maximal size of possible extension queue 2425. Compared 607897 event pairs, 12392 based on Foata normal form. 1700/66819 useless extension candidates. Maximal degree in co-relation 67315. Up to 30626 conditions per place. [2023-11-29 05:52:36,343 INFO L140 encePairwiseOnDemand]: 116/127 looper letters, 117 selfloop transitions, 12 changer transitions 0/192 dead transitions. [2023-11-29 05:52:36,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 192 transitions, 906 flow [2023-11-29 05:52:36,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:52:36,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 05:52:36,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 468 transitions. [2023-11-29 05:52:36,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7370078740157481 [2023-11-29 05:52:36,346 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 468 transitions. [2023-11-29 05:52:36,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 468 transitions. [2023-11-29 05:52:36,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:52:36,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 468 transitions. [2023-11-29 05:52:36,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.6) internal successors, (468), 5 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:36,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:36,350 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:36,351 INFO L175 Difference]: Start difference. First operand has 127 places, 127 transitions, 416 flow. Second operand 5 states and 468 transitions. [2023-11-29 05:52:36,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 192 transitions, 906 flow [2023-11-29 05:52:36,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 192 transitions, 899 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:52:36,950 INFO L231 Difference]: Finished difference. Result has 131 places, 127 transitions, 455 flow [2023-11-29 05:52:36,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=455, PETRI_PLACES=131, PETRI_TRANSITIONS=127} [2023-11-29 05:52:36,951 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 11 predicate places. [2023-11-29 05:52:36,951 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 127 transitions, 455 flow [2023-11-29 05:52:36,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:36,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:52:36,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:52:36,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 05:52:36,952 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 05:52:36,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:36,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1214020628, now seen corresponding path program 1 times [2023-11-29 05:52:36,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:52:36,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654339616] [2023-11-29 05:52:36,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:36,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:52:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:36,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:52:36,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:52:36,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654339616] [2023-11-29 05:52:36,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654339616] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:52:36,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:52:36,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:52:36,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441308092] [2023-11-29 05:52:36,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:52:36,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:52:37,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:52:37,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:52:37,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:52:37,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 127 [2023-11-29 05:52:37,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 127 transitions, 455 flow. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:37,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:52:37,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 127 [2023-11-29 05:52:37,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:52:42,101 INFO L124 PetriNetUnfolderBase]: 25523/51540 cut-off events. [2023-11-29 05:52:42,101 INFO L125 PetriNetUnfolderBase]: For 75758/77959 co-relation queries the response was YES. [2023-11-29 05:52:42,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119404 conditions, 51540 events. 25523/51540 cut-off events. For 75758/77959 co-relation queries the response was YES. Maximal size of possible extension queue 2020. Compared 555661 event pairs, 10804 based on Foata normal form. 1840/45940 useless extension candidates. Maximal degree in co-relation 42314. Up to 18459 conditions per place. [2023-11-29 05:52:42,495 INFO L140 encePairwiseOnDemand]: 121/127 looper letters, 85 selfloop transitions, 7 changer transitions 0/158 dead transitions. [2023-11-29 05:52:42,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 158 transitions, 788 flow [2023-11-29 05:52:42,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:52:42,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:52:42,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 368 transitions. [2023-11-29 05:52:42,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7244094488188977 [2023-11-29 05:52:42,497 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 368 transitions. [2023-11-29 05:52:42,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 368 transitions. [2023-11-29 05:52:42,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:52:42,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 368 transitions. [2023-11-29 05:52:42,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:42,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:42,502 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:42,502 INFO L175 Difference]: Start difference. First operand has 131 places, 127 transitions, 455 flow. Second operand 4 states and 368 transitions. [2023-11-29 05:52:42,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 158 transitions, 788 flow [2023-11-29 05:52:42,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 158 transitions, 771 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:52:42,712 INFO L231 Difference]: Finished difference. Result has 131 places, 126 transitions, 455 flow [2023-11-29 05:52:42,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=455, PETRI_PLACES=131, PETRI_TRANSITIONS=126} [2023-11-29 05:52:42,713 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 11 predicate places. [2023-11-29 05:52:42,713 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 126 transitions, 455 flow [2023-11-29 05:52:42,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:42,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:52:42,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:52:42,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 05:52:42,714 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 05:52:42,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:42,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1271751681, now seen corresponding path program 1 times [2023-11-29 05:52:42,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:52:42,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389974126] [2023-11-29 05:52:42,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:42,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:52:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:42,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:52:42,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:52:42,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389974126] [2023-11-29 05:52:42,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389974126] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:52:42,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:52:42,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:52:42,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289816823] [2023-11-29 05:52:42,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:52:42,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:52:42,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:52:42,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:52:42,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:52:42,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 127 [2023-11-29 05:52:42,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 126 transitions, 455 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:42,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:52:42,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 127 [2023-11-29 05:52:42,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:52:50,569 INFO L124 PetriNetUnfolderBase]: 48308/84703 cut-off events. [2023-11-29 05:52:50,569 INFO L125 PetriNetUnfolderBase]: For 136140/142114 co-relation queries the response was YES. [2023-11-29 05:52:50,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214293 conditions, 84703 events. 48308/84703 cut-off events. For 136140/142114 co-relation queries the response was YES. Maximal size of possible extension queue 3079. Compared 856494 event pairs, 13969 based on Foata normal form. 6083/79846 useless extension candidates. Maximal degree in co-relation 82612. Up to 29296 conditions per place. [2023-11-29 05:52:51,250 INFO L140 encePairwiseOnDemand]: 112/127 looper letters, 136 selfloop transitions, 10 changer transitions 0/206 dead transitions. [2023-11-29 05:52:51,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 206 transitions, 1177 flow [2023-11-29 05:52:51,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:52:51,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:52:51,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 398 transitions. [2023-11-29 05:52:51,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7834645669291339 [2023-11-29 05:52:51,252 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 398 transitions. [2023-11-29 05:52:51,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 398 transitions. [2023-11-29 05:52:51,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:52:51,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 398 transitions. [2023-11-29 05:52:51,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:51,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:51,255 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:51,255 INFO L175 Difference]: Start difference. First operand has 131 places, 126 transitions, 455 flow. Second operand 4 states and 398 transitions. [2023-11-29 05:52:51,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 206 transitions, 1177 flow [2023-11-29 05:52:51,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 206 transitions, 1151 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 05:52:51,826 INFO L231 Difference]: Finished difference. Result has 132 places, 130 transitions, 507 flow [2023-11-29 05:52:51,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=507, PETRI_PLACES=132, PETRI_TRANSITIONS=130} [2023-11-29 05:52:51,827 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 12 predicate places. [2023-11-29 05:52:51,827 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 130 transitions, 507 flow [2023-11-29 05:52:51,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:51,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:52:51,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:52:51,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 05:52:51,828 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 05:52:51,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:52:51,828 INFO L85 PathProgramCache]: Analyzing trace with hash 2008994725, now seen corresponding path program 1 times [2023-11-29 05:52:51,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:52:51,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996088218] [2023-11-29 05:52:51,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:52:51,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:52:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:52:51,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:52:51,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:52:51,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996088218] [2023-11-29 05:52:51,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996088218] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:52:51,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:52:51,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:52:51,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216718831] [2023-11-29 05:52:51,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:52:51,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:52:51,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:52:51,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:52:51,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:52:51,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 127 [2023-11-29 05:52:51,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 130 transitions, 507 flow. Second operand has 6 states, 6 states have (on average 66.16666666666667) internal successors, (397), 6 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:52:51,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:52:51,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 127 [2023-11-29 05:52:51,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:53:02,004 INFO L124 PetriNetUnfolderBase]: 56667/92956 cut-off events. [2023-11-29 05:53:02,005 INFO L125 PetriNetUnfolderBase]: For 120954/128782 co-relation queries the response was YES. [2023-11-29 05:53:02,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248754 conditions, 92956 events. 56667/92956 cut-off events. For 120954/128782 co-relation queries the response was YES. Maximal size of possible extension queue 3218. Compared 881935 event pairs, 17839 based on Foata normal form. 6594/92436 useless extension candidates. Maximal degree in co-relation 110709. Up to 31319 conditions per place. [2023-11-29 05:53:02,779 INFO L140 encePairwiseOnDemand]: 114/127 looper letters, 238 selfloop transitions, 13 changer transitions 0/312 dead transitions. [2023-11-29 05:53:02,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 312 transitions, 1800 flow [2023-11-29 05:53:02,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:53:02,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 05:53:02,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 715 transitions. [2023-11-29 05:53:02,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7037401574803149 [2023-11-29 05:53:02,783 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 715 transitions. [2023-11-29 05:53:02,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 715 transitions. [2023-11-29 05:53:02,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:53:02,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 715 transitions. [2023-11-29 05:53:02,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 89.375) internal successors, (715), 8 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:53:02,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:53:02,788 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:53:02,788 INFO L175 Difference]: Start difference. First operand has 132 places, 130 transitions, 507 flow. Second operand 8 states and 715 transitions. [2023-11-29 05:53:02,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 312 transitions, 1800 flow [2023-11-29 05:53:04,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 312 transitions, 1800 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 05:53:04,683 INFO L231 Difference]: Finished difference. Result has 142 places, 132 transitions, 564 flow [2023-11-29 05:53:04,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=564, PETRI_PLACES=142, PETRI_TRANSITIONS=132} [2023-11-29 05:53:04,685 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 22 predicate places. [2023-11-29 05:53:04,685 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 132 transitions, 564 flow [2023-11-29 05:53:04,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.16666666666667) internal successors, (397), 6 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:53:04,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:53:04,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:53:04,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 05:53:04,686 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 05:53:04,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:53:04,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1020066203, now seen corresponding path program 1 times [2023-11-29 05:53:04,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:53:04,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228459303] [2023-11-29 05:53:04,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:53:04,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:53:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:04,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:53:04,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:53:04,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228459303] [2023-11-29 05:53:04,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228459303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:53:04,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:53:04,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:53:04,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133496279] [2023-11-29 05:53:04,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:53:04,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:53:04,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:53:04,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:53:04,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:53:04,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 127 [2023-11-29 05:53:04,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 132 transitions, 564 flow. Second operand has 5 states, 5 states have (on average 72.8) internal successors, (364), 5 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:53:04,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:53:04,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 127 [2023-11-29 05:53:04,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:53:16,729 INFO L124 PetriNetUnfolderBase]: 56164/93921 cut-off events. [2023-11-29 05:53:16,729 INFO L125 PetriNetUnfolderBase]: For 230726/244043 co-relation queries the response was YES. [2023-11-29 05:53:17,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273677 conditions, 93921 events. 56164/93921 cut-off events. For 230726/244043 co-relation queries the response was YES. Maximal size of possible extension queue 3162. Compared 901534 event pairs, 14112 based on Foata normal form. 8120/95955 useless extension candidates. Maximal degree in co-relation 249297. Up to 39734 conditions per place. [2023-11-29 05:53:18,010 INFO L140 encePairwiseOnDemand]: 116/127 looper letters, 135 selfloop transitions, 12 changer transitions 0/209 dead transitions. [2023-11-29 05:53:18,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 209 transitions, 1304 flow [2023-11-29 05:53:18,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:53:18,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 05:53:18,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 468 transitions. [2023-11-29 05:53:18,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7370078740157481 [2023-11-29 05:53:18,013 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 468 transitions. [2023-11-29 05:53:18,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 468 transitions. [2023-11-29 05:53:18,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:53:18,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 468 transitions. [2023-11-29 05:53:18,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.6) internal successors, (468), 5 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:53:18,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:53:18,017 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:53:18,018 INFO L175 Difference]: Start difference. First operand has 142 places, 132 transitions, 564 flow. Second operand 5 states and 468 transitions. [2023-11-29 05:53:18,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 209 transitions, 1304 flow [2023-11-29 05:53:19,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 209 transitions, 1277 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-29 05:53:19,281 INFO L231 Difference]: Finished difference. Result has 144 places, 132 transitions, 599 flow [2023-11-29 05:53:19,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=599, PETRI_PLACES=144, PETRI_TRANSITIONS=132} [2023-11-29 05:53:19,282 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 24 predicate places. [2023-11-29 05:53:19,282 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 132 transitions, 599 flow [2023-11-29 05:53:19,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.8) internal successors, (364), 5 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:53:19,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:53:19,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:53:19,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 05:53:19,283 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 05:53:19,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:53:19,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1020067228, now seen corresponding path program 1 times [2023-11-29 05:53:19,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:53:19,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118829155] [2023-11-29 05:53:19,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:53:19,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:53:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:19,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:53:19,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:53:19,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118829155] [2023-11-29 05:53:19,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118829155] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:53:19,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:53:19,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:53:19,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466724061] [2023-11-29 05:53:19,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:53:19,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:53:19,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:53:19,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:53:19,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:53:19,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 127 [2023-11-29 05:53:19,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 132 transitions, 599 flow. Second operand has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:53:19,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:53:19,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 127 [2023-11-29 05:53:19,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:53:30,008 INFO L124 PetriNetUnfolderBase]: 42725/84386 cut-off events. [2023-11-29 05:53:30,009 INFO L125 PetriNetUnfolderBase]: For 188358/197515 co-relation queries the response was YES. [2023-11-29 05:53:30,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238746 conditions, 84386 events. 42725/84386 cut-off events. For 188358/197515 co-relation queries the response was YES. Maximal size of possible extension queue 3151. Compared 951117 event pairs, 14603 based on Foata normal form. 6834/84545 useless extension candidates. Maximal degree in co-relation 218722. Up to 23117 conditions per place. [2023-11-29 05:53:30,841 INFO L140 encePairwiseOnDemand]: 118/127 looper letters, 137 selfloop transitions, 9 changer transitions 0/208 dead transitions. [2023-11-29 05:53:30,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 208 transitions, 1311 flow [2023-11-29 05:53:30,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:53:30,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:53:30,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 390 transitions. [2023-11-29 05:53:30,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7677165354330708 [2023-11-29 05:53:30,843 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 390 transitions. [2023-11-29 05:53:30,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 390 transitions. [2023-11-29 05:53:30,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:53:30,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 390 transitions. [2023-11-29 05:53:30,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:53:30,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:53:30,846 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:53:30,846 INFO L175 Difference]: Start difference. First operand has 144 places, 132 transitions, 599 flow. Second operand 4 states and 390 transitions. [2023-11-29 05:53:30,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 208 transitions, 1311 flow [2023-11-29 05:53:32,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 208 transitions, 1301 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:53:32,705 INFO L231 Difference]: Finished difference. Result has 145 places, 130 transitions, 595 flow [2023-11-29 05:53:32,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=595, PETRI_PLACES=145, PETRI_TRANSITIONS=130} [2023-11-29 05:53:32,706 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 25 predicate places. [2023-11-29 05:53:32,707 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 130 transitions, 595 flow [2023-11-29 05:53:32,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:53:32,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:53:32,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:53:32,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 05:53:32,707 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 05:53:32,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:53:32,708 INFO L85 PathProgramCache]: Analyzing trace with hash -769595385, now seen corresponding path program 1 times [2023-11-29 05:53:32,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:53:32,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440763205] [2023-11-29 05:53:32,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:53:32,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:53:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:32,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:53:32,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:53:32,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440763205] [2023-11-29 05:53:32,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440763205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:53:32,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:53:32,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:53:32,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673101297] [2023-11-29 05:53:32,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:53:32,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:53:32,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:53:32,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:53:32,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:53:32,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 127 [2023-11-29 05:53:32,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 130 transitions, 595 flow. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:53:32,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:53:32,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 127 [2023-11-29 05:53:32,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:53:41,767 INFO L124 PetriNetUnfolderBase]: 36749/72799 cut-off events. [2023-11-29 05:53:41,767 INFO L125 PetriNetUnfolderBase]: For 178396/186565 co-relation queries the response was YES. [2023-11-29 05:53:42,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209121 conditions, 72799 events. 36749/72799 cut-off events. For 178396/186565 co-relation queries the response was YES. Maximal size of possible extension queue 2720. Compared 813333 event pairs, 13486 based on Foata normal form. 5307/70716 useless extension candidates. Maximal degree in co-relation 191718. Up to 24254 conditions per place. [2023-11-29 05:53:42,654 INFO L140 encePairwiseOnDemand]: 120/127 looper letters, 97 selfloop transitions, 7 changer transitions 0/170 dead transitions. [2023-11-29 05:53:42,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 170 transitions, 1072 flow [2023-11-29 05:53:42,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:53:42,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:53:42,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2023-11-29 05:53:42,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7421259842519685 [2023-11-29 05:53:42,656 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2023-11-29 05:53:42,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2023-11-29 05:53:42,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:53:42,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2023-11-29 05:53:42,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:53:42,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:53:42,660 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:53:42,660 INFO L175 Difference]: Start difference. First operand has 145 places, 130 transitions, 595 flow. Second operand 4 states and 377 transitions. [2023-11-29 05:53:42,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 170 transitions, 1072 flow [2023-11-29 05:53:45,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 170 transitions, 1060 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:53:45,856 INFO L231 Difference]: Finished difference. Result has 147 places, 130 transitions, 612 flow [2023-11-29 05:53:45,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=612, PETRI_PLACES=147, PETRI_TRANSITIONS=130} [2023-11-29 05:53:45,857 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 27 predicate places. [2023-11-29 05:53:45,857 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 130 transitions, 612 flow [2023-11-29 05:53:45,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:53:45,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:53:45,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:53:45,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 05:53:45,858 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 05:53:45,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:53:45,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1198354874, now seen corresponding path program 1 times [2023-11-29 05:53:45,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:53:45,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865394794] [2023-11-29 05:53:45,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:53:45,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:53:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:53:45,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:53:45,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:53:45,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865394794] [2023-11-29 05:53:45,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865394794] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:53:45,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:53:45,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:53:45,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280967592] [2023-11-29 05:53:45,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:53:45,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:53:45,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:53:45,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:53:45,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:53:45,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 127 [2023-11-29 05:53:45,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 130 transitions, 612 flow. Second operand has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:53:45,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:53:45,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 127 [2023-11-29 05:53:45,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:53:58,594 INFO L124 PetriNetUnfolderBase]: 53220/96259 cut-off events. [2023-11-29 05:53:58,594 INFO L125 PetriNetUnfolderBase]: For 224336/230530 co-relation queries the response was YES. [2023-11-29 05:53:59,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290573 conditions, 96259 events. 53220/96259 cut-off events. For 224336/230530 co-relation queries the response was YES. Maximal size of possible extension queue 3426. Compared 1011104 event pairs, 20339 based on Foata normal form. 4779/94884 useless extension candidates. Maximal degree in co-relation 270643. Up to 31241 conditions per place. [2023-11-29 05:53:59,948 INFO L140 encePairwiseOnDemand]: 114/127 looper letters, 207 selfloop transitions, 16 changer transitions 0/280 dead transitions. [2023-11-29 05:53:59,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 280 transitions, 1898 flow [2023-11-29 05:53:59,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:53:59,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:53:59,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 564 transitions. [2023-11-29 05:53:59,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7401574803149606 [2023-11-29 05:53:59,951 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 564 transitions. [2023-11-29 05:53:59,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 564 transitions. [2023-11-29 05:53:59,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:53:59,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 564 transitions. [2023-11-29 05:53:59,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:53:59,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 127.0) internal successors, (889), 7 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:53:59,955 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 127.0) internal successors, (889), 7 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:53:59,955 INFO L175 Difference]: Start difference. First operand has 147 places, 130 transitions, 612 flow. Second operand 6 states and 564 transitions. [2023-11-29 05:53:59,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 280 transitions, 1898 flow [2023-11-29 05:54:03,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 280 transitions, 1859 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-29 05:54:03,959 INFO L231 Difference]: Finished difference. Result has 149 places, 132 transitions, 650 flow [2023-11-29 05:54:03,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=650, PETRI_PLACES=149, PETRI_TRANSITIONS=132} [2023-11-29 05:54:03,960 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 29 predicate places. [2023-11-29 05:54:03,960 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 132 transitions, 650 flow [2023-11-29 05:54:03,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:03,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:54:03,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:54:03,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 05:54:03,961 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 05:54:03,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:54:03,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1557282255, now seen corresponding path program 1 times [2023-11-29 05:54:03,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:54:03,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002758454] [2023-11-29 05:54:03,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:54:03,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:54:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:04,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:54:04,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:54:04,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002758454] [2023-11-29 05:54:04,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002758454] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:54:04,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:54:04,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:54:04,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261659896] [2023-11-29 05:54:04,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:54:04,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:54:04,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:54:04,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:54:04,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:54:04,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 127 [2023-11-29 05:54:04,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 132 transitions, 650 flow. Second operand has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:04,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:54:04,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 127 [2023-11-29 05:54:04,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:54:17,597 INFO L124 PetriNetUnfolderBase]: 61333/99433 cut-off events. [2023-11-29 05:54:17,597 INFO L125 PetriNetUnfolderBase]: For 353401/365710 co-relation queries the response was YES. [2023-11-29 05:54:18,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323606 conditions, 99433 events. 61333/99433 cut-off events. For 353401/365710 co-relation queries the response was YES. Maximal size of possible extension queue 3334. Compared 927596 event pairs, 18283 based on Foata normal form. 10793/102935 useless extension candidates. Maximal degree in co-relation 297450. Up to 33156 conditions per place. [2023-11-29 05:54:18,701 INFO L140 encePairwiseOnDemand]: 114/127 looper letters, 268 selfloop transitions, 13 changer transitions 0/339 dead transitions. [2023-11-29 05:54:18,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 339 transitions, 2538 flow [2023-11-29 05:54:18,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:54:18,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 05:54:18,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 715 transitions. [2023-11-29 05:54:18,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7037401574803149 [2023-11-29 05:54:18,704 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 715 transitions. [2023-11-29 05:54:18,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 715 transitions. [2023-11-29 05:54:18,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:54:18,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 715 transitions. [2023-11-29 05:54:18,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 89.375) internal successors, (715), 8 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:18,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:18,709 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:18,709 INFO L175 Difference]: Start difference. First operand has 149 places, 132 transitions, 650 flow. Second operand 8 states and 715 transitions. [2023-11-29 05:54:18,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 339 transitions, 2538 flow [2023-11-29 05:54:19,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 339 transitions, 2337 flow, removed 36 selfloop flow, removed 6 redundant places. [2023-11-29 05:54:19,872 INFO L231 Difference]: Finished difference. Result has 153 places, 134 transitions, 666 flow [2023-11-29 05:54:19,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=666, PETRI_PLACES=153, PETRI_TRANSITIONS=134} [2023-11-29 05:54:19,873 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 33 predicate places. [2023-11-29 05:54:19,873 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 134 transitions, 666 flow [2023-11-29 05:54:19,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:19,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:54:19,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:54:19,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 05:54:19,874 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 05:54:19,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:54:19,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1912316131, now seen corresponding path program 1 times [2023-11-29 05:54:19,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:54:19,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539670744] [2023-11-29 05:54:19,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:54:19,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:54:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:19,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:54:19,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:54:19,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539670744] [2023-11-29 05:54:19,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539670744] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:54:19,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:54:19,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:54:19,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78913700] [2023-11-29 05:54:19,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:54:19,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:54:19,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:54:19,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:54:19,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:54:19,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 127 [2023-11-29 05:54:19,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 134 transitions, 666 flow. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:19,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:54:19,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 127 [2023-11-29 05:54:19,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:54:29,347 INFO L124 PetriNetUnfolderBase]: 38971/73076 cut-off events. [2023-11-29 05:54:29,347 INFO L125 PetriNetUnfolderBase]: For 245136/255260 co-relation queries the response was YES. [2023-11-29 05:54:29,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228928 conditions, 73076 events. 38971/73076 cut-off events. For 245136/255260 co-relation queries the response was YES. Maximal size of possible extension queue 2672. Compared 777162 event pairs, 16402 based on Foata normal form. 8180/73955 useless extension candidates. Maximal degree in co-relation 210462. Up to 28971 conditions per place. [2023-11-29 05:54:30,186 INFO L140 encePairwiseOnDemand]: 121/127 looper letters, 107 selfloop transitions, 7 changer transitions 0/176 dead transitions. [2023-11-29 05:54:30,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 176 transitions, 1186 flow [2023-11-29 05:54:30,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:54:30,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:54:30,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 368 transitions. [2023-11-29 05:54:30,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7244094488188977 [2023-11-29 05:54:30,188 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 368 transitions. [2023-11-29 05:54:30,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 368 transitions. [2023-11-29 05:54:30,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:54:30,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 368 transitions. [2023-11-29 05:54:30,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:30,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:30,190 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:30,190 INFO L175 Difference]: Start difference. First operand has 153 places, 134 transitions, 666 flow. Second operand 4 states and 368 transitions. [2023-11-29 05:54:30,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 176 transitions, 1186 flow [2023-11-29 05:54:32,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 176 transitions, 1167 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-29 05:54:32,792 INFO L231 Difference]: Finished difference. Result has 152 places, 133 transitions, 665 flow [2023-11-29 05:54:32,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=665, PETRI_PLACES=152, PETRI_TRANSITIONS=133} [2023-11-29 05:54:32,793 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 32 predicate places. [2023-11-29 05:54:32,793 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 133 transitions, 665 flow [2023-11-29 05:54:32,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:32,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:54:32,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:54:32,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 05:54:32,794 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 05:54:32,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:54:32,794 INFO L85 PathProgramCache]: Analyzing trace with hash -406425178, now seen corresponding path program 1 times [2023-11-29 05:54:32,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:54:32,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888169687] [2023-11-29 05:54:32,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:54:32,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:54:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:32,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:54:32,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:54:32,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888169687] [2023-11-29 05:54:32,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888169687] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:54:32,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:54:32,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:54:32,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550394265] [2023-11-29 05:54:32,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:54:32,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:54:32,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:54:32,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:54:32,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:54:32,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 127 [2023-11-29 05:54:32,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 133 transitions, 665 flow. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:32,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:54:32,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 127 [2023-11-29 05:54:32,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:54:41,941 INFO L124 PetriNetUnfolderBase]: 35838/67902 cut-off events. [2023-11-29 05:54:41,941 INFO L125 PetriNetUnfolderBase]: For 207078/216011 co-relation queries the response was YES. [2023-11-29 05:54:42,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222657 conditions, 67902 events. 35838/67902 cut-off events. For 207078/216011 co-relation queries the response was YES. Maximal size of possible extension queue 2510. Compared 716229 event pairs, 11783 based on Foata normal form. 6493/71807 useless extension candidates. Maximal degree in co-relation 203918. Up to 26885 conditions per place. [2023-11-29 05:54:42,680 INFO L140 encePairwiseOnDemand]: 122/127 looper letters, 99 selfloop transitions, 7 changer transitions 0/172 dead transitions. [2023-11-29 05:54:42,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 172 transitions, 1124 flow [2023-11-29 05:54:42,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:54:42,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:54:42,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2023-11-29 05:54:42,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7381889763779528 [2023-11-29 05:54:42,682 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2023-11-29 05:54:42,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2023-11-29 05:54:42,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:54:42,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2023-11-29 05:54:42,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:42,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:42,686 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:42,686 INFO L175 Difference]: Start difference. First operand has 152 places, 133 transitions, 665 flow. Second operand 4 states and 375 transitions. [2023-11-29 05:54:42,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 172 transitions, 1124 flow [2023-11-29 05:54:45,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 172 transitions, 1104 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 05:54:45,596 INFO L231 Difference]: Finished difference. Result has 152 places, 133 transitions, 685 flow [2023-11-29 05:54:45,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=685, PETRI_PLACES=152, PETRI_TRANSITIONS=133} [2023-11-29 05:54:45,597 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 32 predicate places. [2023-11-29 05:54:45,597 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 133 transitions, 685 flow [2023-11-29 05:54:45,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:45,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:54:45,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:54:45,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 05:54:45,597 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 05:54:45,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:54:45,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1978427777, now seen corresponding path program 1 times [2023-11-29 05:54:45,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:54:45,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638527884] [2023-11-29 05:54:45,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:54:45,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:54:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:54:45,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:54:45,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:54:45,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638527884] [2023-11-29 05:54:45,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638527884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:54:45,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:54:45,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:54:45,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144069916] [2023-11-29 05:54:45,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:54:45,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:54:45,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:54:45,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:54:45,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:54:45,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 127 [2023-11-29 05:54:45,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 133 transitions, 685 flow. Second operand has 5 states, 5 states have (on average 67.0) internal successors, (335), 5 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:45,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:54:45,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 127 [2023-11-29 05:54:45,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:54:57,983 INFO L124 PetriNetUnfolderBase]: 56949/91442 cut-off events. [2023-11-29 05:54:57,984 INFO L125 PetriNetUnfolderBase]: For 327679/337225 co-relation queries the response was YES. [2023-11-29 05:54:58,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316107 conditions, 91442 events. 56949/91442 cut-off events. For 327679/337225 co-relation queries the response was YES. Maximal size of possible extension queue 3046. Compared 834873 event pairs, 18477 based on Foata normal form. 8569/96587 useless extension candidates. Maximal degree in co-relation 293339. Up to 32303 conditions per place. [2023-11-29 05:54:58,929 INFO L140 encePairwiseOnDemand]: 114/127 looper letters, 232 selfloop transitions, 16 changer transitions 0/303 dead transitions. [2023-11-29 05:54:58,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 303 transitions, 2245 flow [2023-11-29 05:54:58,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:54:58,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:54:58,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 564 transitions. [2023-11-29 05:54:58,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7401574803149606 [2023-11-29 05:54:58,931 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 564 transitions. [2023-11-29 05:54:58,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 564 transitions. [2023-11-29 05:54:58,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:54:58,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 564 transitions. [2023-11-29 05:54:58,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:58,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 127.0) internal successors, (889), 7 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:58,935 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 127.0) internal successors, (889), 7 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:54:58,935 INFO L175 Difference]: Start difference. First operand has 152 places, 133 transitions, 685 flow. Second operand 6 states and 564 transitions. [2023-11-29 05:54:58,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 303 transitions, 2245 flow [2023-11-29 05:55:06,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 303 transitions, 2203 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-29 05:55:06,294 INFO L231 Difference]: Finished difference. Result has 154 places, 135 transitions, 724 flow [2023-11-29 05:55:06,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=724, PETRI_PLACES=154, PETRI_TRANSITIONS=135} [2023-11-29 05:55:06,294 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 34 predicate places. [2023-11-29 05:55:06,294 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 135 transitions, 724 flow [2023-11-29 05:55:06,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.0) internal successors, (335), 5 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:06,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:55:06,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:55:06,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 05:55:06,295 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 05:55:06,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:55:06,295 INFO L85 PathProgramCache]: Analyzing trace with hash -847741014, now seen corresponding path program 1 times [2023-11-29 05:55:06,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:55:06,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083087207] [2023-11-29 05:55:06,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:55:06,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:55:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:55:06,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:55:06,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:55:06,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083087207] [2023-11-29 05:55:06,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083087207] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:55:06,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:55:06,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:55:06,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780820068] [2023-11-29 05:55:06,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:55:06,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:55:06,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:55:06,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:55:06,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:55:06,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 127 [2023-11-29 05:55:06,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 135 transitions, 724 flow. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:06,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:55:06,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 127 [2023-11-29 05:55:06,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:55:17,280 INFO L124 PetriNetUnfolderBase]: 47005/83715 cut-off events. [2023-11-29 05:55:17,280 INFO L125 PetriNetUnfolderBase]: For 373221/384209 co-relation queries the response was YES. [2023-11-29 05:55:17,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285695 conditions, 83715 events. 47005/83715 cut-off events. For 373221/384209 co-relation queries the response was YES. Maximal size of possible extension queue 3002. Compared 858729 event pairs, 15821 based on Foata normal form. 9944/87258 useless extension candidates. Maximal degree in co-relation 263799. Up to 27415 conditions per place. [2023-11-29 05:55:18,251 INFO L140 encePairwiseOnDemand]: 118/127 looper letters, 161 selfloop transitions, 9 changer transitions 0/227 dead transitions. [2023-11-29 05:55:18,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 227 transitions, 1754 flow [2023-11-29 05:55:18,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:55:18,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:55:18,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 390 transitions. [2023-11-29 05:55:18,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7677165354330708 [2023-11-29 05:55:18,253 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 390 transitions. [2023-11-29 05:55:18,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 390 transitions. [2023-11-29 05:55:18,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:55:18,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 390 transitions. [2023-11-29 05:55:18,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:18,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:18,256 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:18,256 INFO L175 Difference]: Start difference. First operand has 154 places, 135 transitions, 724 flow. Second operand 4 states and 390 transitions. [2023-11-29 05:55:18,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 227 transitions, 1754 flow [2023-11-29 05:55:23,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 227 transitions, 1649 flow, removed 18 selfloop flow, removed 6 redundant places. [2023-11-29 05:55:23,184 INFO L231 Difference]: Finished difference. Result has 151 places, 133 transitions, 689 flow [2023-11-29 05:55:23,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=689, PETRI_PLACES=151, PETRI_TRANSITIONS=133} [2023-11-29 05:55:23,185 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 31 predicate places. [2023-11-29 05:55:23,185 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 133 transitions, 689 flow [2023-11-29 05:55:23,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:23,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:55:23,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:55:23,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 05:55:23,186 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-29 05:55:23,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:55:23,186 INFO L85 PathProgramCache]: Analyzing trace with hash -847742039, now seen corresponding path program 1 times [2023-11-29 05:55:23,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:55:23,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660849675] [2023-11-29 05:55:23,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:55:23,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:55:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:55:23,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:55:23,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:55:23,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660849675] [2023-11-29 05:55:23,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660849675] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:55:23,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:55:23,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:55:23,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293322474] [2023-11-29 05:55:23,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:55:23,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:55:23,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:55:23,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:55:23,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:55:23,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 127 [2023-11-29 05:55:23,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 133 transitions, 689 flow. Second operand has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:55:23,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:55:23,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 127 [2023-11-29 05:55:23,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand