./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b 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_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --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 b869eaba59e8dca8d7cb2d1135193e506b8377811cada7a7f67b6d0824dd2d3d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:48:00,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:48:00,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:48:00,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:48:00,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:48:00,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:48:00,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:48:00,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:48:00,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:48:00,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:48:00,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:48:00,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:48:00,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:48:00,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:48:00,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:48:00,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:48:00,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:48:00,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:48:00,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:48:00,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:48:00,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:48:00,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:48:00,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:48:00,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:48:00,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:48:00,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:48:00,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:48:00,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:48:00,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:48:00,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:48:00,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:48:00,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:48:00,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:48:00,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:48:00,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:48:00,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:48:00,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:48:00,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:48:00,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:48:00,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:48:00,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:48:00,073 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:48:00,100 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:48:00,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:48:00,101 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:48:00,101 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:48:00,102 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:48:00,103 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:48:00,103 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:48:00,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:48:00,104 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:48:00,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:48:00,105 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:48:00,106 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:48:00,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:48:00,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:48:00,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:48:00,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:48:00,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:48:00,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:48:00,108 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:48:00,109 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:48:00,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:48:00,110 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:48:00,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:48:00,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:48:00,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:48:00,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:48:00,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:48:00,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:48:00,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:48:00,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:48:00,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:48:00,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:48:00,114 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:48:00,114 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:48:00,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:48:00,115 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b869eaba59e8dca8d7cb2d1135193e506b8377811cada7a7f67b6d0824dd2d3d [2022-11-20 11:48:00,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:48:00,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:48:00,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:48:00,451 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:48:00,452 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:48:00,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2022-11-20 11:48:03,618 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:48:03,933 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:48:03,934 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2022-11-20 11:48:03,945 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/data/9b0d916b4/10fdc39c9989409aa16bc4f797479b13/FLAG28b59b192 [2022-11-20 11:48:03,970 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/data/9b0d916b4/10fdc39c9989409aa16bc4f797479b13 [2022-11-20 11:48:03,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:48:03,975 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:48:03,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:48:03,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:48:03,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:48:03,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:48:03" (1/1) ... [2022-11-20 11:48:03,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@116138a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:03, skipping insertion in model container [2022-11-20 11:48:03,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:48:03" (1/1) ... [2022-11-20 11:48:03,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:48:04,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:48:04,292 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2022-11-20 11:48:04,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:48:04,313 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:48:04,379 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2022-11-20 11:48:04,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:48:04,409 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:48:04,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:04 WrapperNode [2022-11-20 11:48:04,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:48:04,411 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:48:04,411 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:48:04,411 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:48:04,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:04" (1/1) ... [2022-11-20 11:48:04,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:04" (1/1) ... [2022-11-20 11:48:04,467 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 21, calls inlined = 29, statements flattened = 478 [2022-11-20 11:48:04,468 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:48:04,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:48:04,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:48:04,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:48:04,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:04" (1/1) ... [2022-11-20 11:48:04,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:04" (1/1) ... [2022-11-20 11:48:04,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:04" (1/1) ... [2022-11-20 11:48:04,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:04" (1/1) ... [2022-11-20 11:48:04,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:04" (1/1) ... [2022-11-20 11:48:04,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:04" (1/1) ... [2022-11-20 11:48:04,507 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:04" (1/1) ... [2022-11-20 11:48:04,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:04" (1/1) ... [2022-11-20 11:48:04,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:48:04,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:48:04,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:48:04,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:48:04,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:04" (1/1) ... [2022-11-20 11:48:04,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:48:04,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:48:04,564 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:48:04,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:48:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:48:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:48:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:48:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:48:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:48:04,613 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:48:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:48:04,613 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:48:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:48:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:48:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:48:04,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:48:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:48:04,616 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:48:04,750 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:48:04,753 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:48:05,746 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:48:05,770 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:48:05,772 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 11:48:05,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:48:05 BoogieIcfgContainer [2022-11-20 11:48:05,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:48:05,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:48:05,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:48:05,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:48:05,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:48:03" (1/3) ... [2022-11-20 11:48:05,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@254a77d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:48:05, skipping insertion in model container [2022-11-20 11:48:05,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:48:04" (2/3) ... [2022-11-20 11:48:05,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@254a77d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:48:05, skipping insertion in model container [2022-11-20 11:48:05,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:48:05" (3/3) ... [2022-11-20 11:48:05,790 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2022-11-20 11:48:05,799 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:48:05,811 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:48:05,811 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2022-11-20 11:48:05,811 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:48:06,054 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 11:48:06,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 605 places, 659 transitions, 1334 flow [2022-11-20 11:48:06,509 INFO L130 PetriNetUnfolder]: 61/657 cut-off events. [2022-11-20 11:48:06,509 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:48:06,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 657 events. 61/657 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2386 event pairs, 0 based on Foata normal form. 0/554 useless extension candidates. Maximal degree in co-relation 485. Up to 2 conditions per place. [2022-11-20 11:48:06,534 INFO L82 GeneralOperation]: Start removeDead. Operand has 605 places, 659 transitions, 1334 flow [2022-11-20 11:48:06,555 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 586 places, 639 transitions, 1290 flow [2022-11-20 11:48:06,573 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:48:06,582 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=LoopsAndPotentialCycles, 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;@5137bc34, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:48:06,583 INFO L358 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2022-11-20 11:48:06,598 INFO L130 PetriNetUnfolder]: 3/94 cut-off events. [2022-11-20 11:48:06,598 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:48:06,599 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:06,601 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:06,602 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:06,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:06,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1317612097, now seen corresponding path program 1 times [2022-11-20 11:48:06,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:06,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131066729] [2022-11-20 11:48:06,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:06,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:07,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:48:07,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:07,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131066729] [2022-11-20 11:48:07,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131066729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:07,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:07,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:48:07,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786173849] [2022-11-20 11:48:07,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:07,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:48:07,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:07,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:48:07,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:48:07,294 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 603 out of 659 [2022-11-20 11:48:07,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 639 transitions, 1290 flow. Second operand has 4 states, 4 states have (on average 604.5) internal successors, (2418), 4 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:07,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:07,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 603 of 659 [2022-11-20 11:48:07,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:08,001 INFO L130 PetriNetUnfolder]: 71/1120 cut-off events. [2022-11-20 11:48:08,002 INFO L131 PetriNetUnfolder]: For 18/20 co-relation queries the response was YES. [2022-11-20 11:48:08,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1185 conditions, 1120 events. 71/1120 cut-off events. For 18/20 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 6226 event pairs, 0 based on Foata normal form. 54/990 useless extension candidates. Maximal degree in co-relation 691. Up to 30 conditions per place. [2022-11-20 11:48:08,039 INFO L137 encePairwiseOnDemand]: 620/659 looper letters, 38 selfloop transitions, 9 changer transitions 8/634 dead transitions. [2022-11-20 11:48:08,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 634 transitions, 1390 flow [2022-11-20 11:48:08,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:48:08,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:48:08,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3116 transitions. [2022-11-20 11:48:08,072 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9456752655538695 [2022-11-20 11:48:08,073 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3116 transitions. [2022-11-20 11:48:08,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3116 transitions. [2022-11-20 11:48:08,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:08,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3116 transitions. [2022-11-20 11:48:08,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 623.2) internal successors, (3116), 5 states have internal predecessors, (3116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:08,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:08,117 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:08,119 INFO L175 Difference]: Start difference. First operand has 586 places, 639 transitions, 1290 flow. Second operand 5 states and 3116 transitions. [2022-11-20 11:48:08,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 634 transitions, 1390 flow [2022-11-20 11:48:08,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 634 transitions, 1374 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:48:08,148 INFO L231 Difference]: Finished difference. Result has 587 places, 613 transitions, 1282 flow [2022-11-20 11:48:08,151 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=580, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1282, PETRI_PLACES=587, PETRI_TRANSITIONS=613} [2022-11-20 11:48:08,157 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 1 predicate places. [2022-11-20 11:48:08,158 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 613 transitions, 1282 flow [2022-11-20 11:48:08,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 604.5) internal successors, (2418), 4 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:08,160 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:08,161 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:08,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:48:08,162 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:08,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:08,163 INFO L85 PathProgramCache]: Analyzing trace with hash 271165569, now seen corresponding path program 1 times [2022-11-20 11:48:08,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:08,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459346824] [2022-11-20 11:48:08,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:08,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:08,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:08,397 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:48:08,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:08,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459346824] [2022-11-20 11:48:08,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459346824] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:48:08,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684411820] [2022-11-20 11:48:08,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:08,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:48:08,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:48:08,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:48:08,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:48:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:08,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:48:08,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:48:08,640 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:48:08,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:48:08,705 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:48:08,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684411820] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:48:08,706 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:48:08,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 11:48:08,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892932859] [2022-11-20 11:48:08,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:48:08,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:48:08,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:08,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:48:08,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:48:08,723 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 603 out of 659 [2022-11-20 11:48:08,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 613 transitions, 1282 flow. Second operand has 12 states, 12 states have (on average 605.6666666666666) internal successors, (7268), 12 states have internal predecessors, (7268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:08,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:08,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 603 of 659 [2022-11-20 11:48:08,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:10,157 INFO L130 PetriNetUnfolder]: 176/2626 cut-off events. [2022-11-20 11:48:10,158 INFO L131 PetriNetUnfolder]: For 32/37 co-relation queries the response was YES. [2022-11-20 11:48:10,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2805 conditions, 2626 events. 176/2626 cut-off events. For 32/37 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 20230 event pairs, 0 based on Foata normal form. 6/2192 useless extension candidates. Maximal degree in co-relation 2020. Up to 22 conditions per place. [2022-11-20 11:48:10,332 INFO L137 encePairwiseOnDemand]: 644/659 looper letters, 71 selfloop transitions, 40 changer transitions 0/690 dead transitions. [2022-11-20 11:48:10,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 690 transitions, 1720 flow [2022-11-20 11:48:10,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:48:10,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 11:48:10,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 10971 transitions. [2022-11-20 11:48:10,355 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.924886191198786 [2022-11-20 11:48:10,355 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 10971 transitions. [2022-11-20 11:48:10,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 10971 transitions. [2022-11-20 11:48:10,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:10,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 10971 transitions. [2022-11-20 11:48:10,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 609.5) internal successors, (10971), 18 states have internal predecessors, (10971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:10,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 659.0) internal successors, (12521), 19 states have internal predecessors, (12521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:10,424 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 659.0) internal successors, (12521), 19 states have internal predecessors, (12521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:10,424 INFO L175 Difference]: Start difference. First operand has 587 places, 613 transitions, 1282 flow. Second operand 18 states and 10971 transitions. [2022-11-20 11:48:10,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 690 transitions, 1720 flow [2022-11-20 11:48:10,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 690 transitions, 1715 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:48:10,439 INFO L231 Difference]: Finished difference. Result has 600 places, 640 transitions, 1515 flow [2022-11-20 11:48:10,440 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1277, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1515, PETRI_PLACES=600, PETRI_TRANSITIONS=640} [2022-11-20 11:48:10,441 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 14 predicate places. [2022-11-20 11:48:10,441 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 640 transitions, 1515 flow [2022-11-20 11:48:10,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 605.6666666666666) internal successors, (7268), 12 states have internal predecessors, (7268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:10,446 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:10,446 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:10,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 11:48:10,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:48:10,653 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:10,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:10,654 INFO L85 PathProgramCache]: Analyzing trace with hash -183800829, now seen corresponding path program 1 times [2022-11-20 11:48:10,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:10,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221528323] [2022-11-20 11:48:10,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:10,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:10,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:48:10,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:10,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221528323] [2022-11-20 11:48:10,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221528323] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:48:10,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856289172] [2022-11-20 11:48:10,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:10,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:48:10,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:48:10,821 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:48:10,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:48:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:10,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:48:10,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:48:11,063 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:48:11,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:48:11,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856289172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:11,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:48:11,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:48:11,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643739437] [2022-11-20 11:48:11,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:11,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:48:11,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:11,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:48:11,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:48:11,077 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 603 out of 659 [2022-11-20 11:48:11,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 640 transitions, 1515 flow. Second operand has 6 states, 6 states have (on average 605.3333333333334) internal successors, (3632), 6 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:11,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:11,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 603 of 659 [2022-11-20 11:48:11,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:12,284 INFO L130 PetriNetUnfolder]: 176/2618 cut-off events. [2022-11-20 11:48:12,284 INFO L131 PetriNetUnfolder]: For 126/131 co-relation queries the response was YES. [2022-11-20 11:48:12,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2842 conditions, 2618 events. 176/2618 cut-off events. For 126/131 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 20154 event pairs, 0 based on Foata normal form. 8/2186 useless extension candidates. Maximal degree in co-relation 2249. Up to 44 conditions per place. [2022-11-20 11:48:12,369 INFO L137 encePairwiseOnDemand]: 648/659 looper letters, 39 selfloop transitions, 27 changer transitions 0/645 dead transitions. [2022-11-20 11:48:12,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 645 transitions, 1626 flow [2022-11-20 11:48:12,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:48:12,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:48:12,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4268 transitions. [2022-11-20 11:48:12,382 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9252113592022545 [2022-11-20 11:48:12,383 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4268 transitions. [2022-11-20 11:48:12,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4268 transitions. [2022-11-20 11:48:12,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:12,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4268 transitions. [2022-11-20 11:48:12,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 609.7142857142857) internal successors, (4268), 7 states have internal predecessors, (4268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:12,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:12,414 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:12,414 INFO L175 Difference]: Start difference. First operand has 600 places, 640 transitions, 1515 flow. Second operand 7 states and 4268 transitions. [2022-11-20 11:48:12,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 645 transitions, 1626 flow [2022-11-20 11:48:12,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 645 transitions, 1552 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-20 11:48:12,435 INFO L231 Difference]: Finished difference. Result has 595 places, 632 transitions, 1441 flow [2022-11-20 11:48:12,437 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1387, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=605, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1441, PETRI_PLACES=595, PETRI_TRANSITIONS=632} [2022-11-20 11:48:12,438 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 9 predicate places. [2022-11-20 11:48:12,438 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 632 transitions, 1441 flow [2022-11-20 11:48:12,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 605.3333333333334) internal successors, (3632), 6 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:12,440 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:12,440 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:12,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:48:12,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:48:12,647 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:12,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:12,648 INFO L85 PathProgramCache]: Analyzing trace with hash 63362247, now seen corresponding path program 2 times [2022-11-20 11:48:12,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:12,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745185864] [2022-11-20 11:48:12,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:12,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:13,086 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:48:13,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:13,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745185864] [2022-11-20 11:48:13,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745185864] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:48:13,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114225200] [2022-11-20 11:48:13,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:48:13,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:48:13,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:48:13,089 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:48:13,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:48:13,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:48:13,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:48:13,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:48:13,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:48:13,412 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-20 11:48:13,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:48:13,587 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-20 11:48:13,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114225200] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:48:13,587 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:48:13,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-11-20 11:48:13,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383576392] [2022-11-20 11:48:13,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:48:13,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:48:13,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:13,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:48:13,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:48:13,600 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 595 out of 659 [2022-11-20 11:48:13,610 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 632 transitions, 1441 flow. Second operand has 18 states, 18 states have (on average 598.8333333333334) internal successors, (10779), 18 states have internal predecessors, (10779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:13,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:13,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 595 of 659 [2022-11-20 11:48:13,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:15,157 INFO L130 PetriNetUnfolder]: 211/3108 cut-off events. [2022-11-20 11:48:15,157 INFO L131 PetriNetUnfolder]: For 114/120 co-relation queries the response was YES. [2022-11-20 11:48:15,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3342 conditions, 3108 events. 211/3108 cut-off events. For 114/120 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 25045 event pairs, 0 based on Foata normal form. 2/2582 useless extension candidates. Maximal degree in co-relation 2514. Up to 14 conditions per place. [2022-11-20 11:48:15,239 INFO L137 encePairwiseOnDemand]: 643/659 looper letters, 81 selfloop transitions, 43 changer transitions 0/695 dead transitions. [2022-11-20 11:48:15,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 695 transitions, 1840 flow [2022-11-20 11:48:15,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 11:48:15,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 11:48:15,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 12026 transitions. [2022-11-20 11:48:15,353 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9124430955993931 [2022-11-20 11:48:15,353 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 12026 transitions. [2022-11-20 11:48:15,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 12026 transitions. [2022-11-20 11:48:15,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:15,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 12026 transitions. [2022-11-20 11:48:15,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 601.3) internal successors, (12026), 20 states have internal predecessors, (12026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:15,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 659.0) internal successors, (13839), 21 states have internal predecessors, (13839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:15,421 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 659.0) internal successors, (13839), 21 states have internal predecessors, (13839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:15,422 INFO L175 Difference]: Start difference. First operand has 595 places, 632 transitions, 1441 flow. Second operand 20 states and 12026 transitions. [2022-11-20 11:48:15,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 695 transitions, 1840 flow [2022-11-20 11:48:15,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 695 transitions, 1787 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-20 11:48:15,438 INFO L231 Difference]: Finished difference. Result has 604 places, 635 transitions, 1487 flow [2022-11-20 11:48:15,439 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1371, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1487, PETRI_PLACES=604, PETRI_TRANSITIONS=635} [2022-11-20 11:48:15,441 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 18 predicate places. [2022-11-20 11:48:15,441 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 635 transitions, 1487 flow [2022-11-20 11:48:15,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 598.8333333333334) internal successors, (10779), 18 states have internal predecessors, (10779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:15,446 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:15,446 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:15,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:48:15,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:48:15,653 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:15,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:15,654 INFO L85 PathProgramCache]: Analyzing trace with hash -293264205, now seen corresponding path program 1 times [2022-11-20 11:48:15,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:15,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277250875] [2022-11-20 11:48:15,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:15,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:15,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:48:15,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:15,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277250875] [2022-11-20 11:48:15,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277250875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:15,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:15,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:48:15,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615663938] [2022-11-20 11:48:15,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:15,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:48:15,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:15,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:48:15,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:48:15,840 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 605 out of 659 [2022-11-20 11:48:15,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 635 transitions, 1487 flow. Second operand has 5 states, 5 states have (on average 608.0) internal successors, (3040), 5 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:15,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:15,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 605 of 659 [2022-11-20 11:48:15,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:16,966 INFO L130 PetriNetUnfolder]: 176/2620 cut-off events. [2022-11-20 11:48:16,966 INFO L131 PetriNetUnfolder]: For 148/153 co-relation queries the response was YES. [2022-11-20 11:48:17,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2838 conditions, 2620 events. 176/2620 cut-off events. For 148/153 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 20022 event pairs, 0 based on Foata normal form. 2/2192 useless extension candidates. Maximal degree in co-relation 503. Up to 72 conditions per place. [2022-11-20 11:48:17,041 INFO L137 encePairwiseOnDemand]: 649/659 looper letters, 39 selfloop transitions, 12 changer transitions 0/638 dead transitions. [2022-11-20 11:48:17,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 638 transitions, 1594 flow [2022-11-20 11:48:17,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:48:17,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:48:17,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3060 transitions. [2022-11-20 11:48:17,051 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.928679817905918 [2022-11-20 11:48:17,052 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3060 transitions. [2022-11-20 11:48:17,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3060 transitions. [2022-11-20 11:48:17,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:17,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3060 transitions. [2022-11-20 11:48:17,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 612.0) internal successors, (3060), 5 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:17,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:17,071 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:17,072 INFO L175 Difference]: Start difference. First operand has 604 places, 635 transitions, 1487 flow. Second operand 5 states and 3060 transitions. [2022-11-20 11:48:17,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 638 transitions, 1594 flow [2022-11-20 11:48:17,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 638 transitions, 1503 flow, removed 4 selfloop flow, removed 15 redundant places. [2022-11-20 11:48:17,089 INFO L231 Difference]: Finished difference. Result has 594 places, 634 transitions, 1421 flow [2022-11-20 11:48:17,091 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1389, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1421, PETRI_PLACES=594, PETRI_TRANSITIONS=634} [2022-11-20 11:48:17,091 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 8 predicate places. [2022-11-20 11:48:17,092 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 634 transitions, 1421 flow [2022-11-20 11:48:17,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 608.0) internal successors, (3040), 5 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:17,093 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:17,094 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:17,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:48:17,094 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:17,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:17,095 INFO L85 PathProgramCache]: Analyzing trace with hash 359988901, now seen corresponding path program 1 times [2022-11-20 11:48:17,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:17,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665244741] [2022-11-20 11:48:17,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:17,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:17,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:48:17,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:17,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665244741] [2022-11-20 11:48:17,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665244741] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:48:17,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391785275] [2022-11-20 11:48:17,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:17,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:48:17,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:48:17,318 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:48:17,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:48:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:17,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:48:17,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:48:17,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:48:17,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:48:17,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:48:17,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391785275] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:48:17,741 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:48:17,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-20 11:48:17,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241436296] [2022-11-20 11:48:17,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:48:17,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:48:17,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:17,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:48:17,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:48:17,754 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 595 out of 659 [2022-11-20 11:48:17,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 634 transitions, 1421 flow. Second operand has 15 states, 15 states have (on average 598.4666666666667) internal successors, (8977), 15 states have internal predecessors, (8977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:17,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:17,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 595 of 659 [2022-11-20 11:48:17,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:18,510 INFO L130 PetriNetUnfolder]: 106/1644 cut-off events. [2022-11-20 11:48:18,511 INFO L131 PetriNetUnfolder]: For 44/47 co-relation queries the response was YES. [2022-11-20 11:48:18,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1847 conditions, 1644 events. 106/1644 cut-off events. For 44/47 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 10461 event pairs, 0 based on Foata normal form. 4/1390 useless extension candidates. Maximal degree in co-relation 1547. Up to 36 conditions per place. [2022-11-20 11:48:18,552 INFO L137 encePairwiseOnDemand]: 643/659 looper letters, 49 selfloop transitions, 30 changer transitions 0/650 dead transitions. [2022-11-20 11:48:18,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 650 transitions, 1621 flow [2022-11-20 11:48:18,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:48:18,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 11:48:18,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 6610 transitions. [2022-11-20 11:48:18,565 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9118499103324597 [2022-11-20 11:48:18,565 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 6610 transitions. [2022-11-20 11:48:18,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 6610 transitions. [2022-11-20 11:48:18,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:18,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 6610 transitions. [2022-11-20 11:48:18,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 600.9090909090909) internal successors, (6610), 11 states have internal predecessors, (6610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:18,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 659.0) internal successors, (7908), 12 states have internal predecessors, (7908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:18,595 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 659.0) internal successors, (7908), 12 states have internal predecessors, (7908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:18,595 INFO L175 Difference]: Start difference. First operand has 594 places, 634 transitions, 1421 flow. Second operand 11 states and 6610 transitions. [2022-11-20 11:48:18,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 650 transitions, 1621 flow [2022-11-20 11:48:18,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 600 places, 650 transitions, 1601 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:48:18,615 INFO L231 Difference]: Finished difference. Result has 603 places, 634 transitions, 1500 flow [2022-11-20 11:48:18,616 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1387, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1500, PETRI_PLACES=603, PETRI_TRANSITIONS=634} [2022-11-20 11:48:18,619 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 17 predicate places. [2022-11-20 11:48:18,620 INFO L495 AbstractCegarLoop]: Abstraction has has 603 places, 634 transitions, 1500 flow [2022-11-20 11:48:18,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 598.4666666666667) internal successors, (8977), 15 states have internal predecessors, (8977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:18,623 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:18,624 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:18,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:48:18,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 11:48:18,830 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:18,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:18,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1299232631, now seen corresponding path program 2 times [2022-11-20 11:48:18,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:18,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745849790] [2022-11-20 11:48:18,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:18,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:19,200 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-20 11:48:19,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:19,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745849790] [2022-11-20 11:48:19,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745849790] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:48:19,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805571428] [2022-11-20 11:48:19,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:48:19,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:48:19,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:48:19,203 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:48:19,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:48:19,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:48:19,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:48:19,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:48:19,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:48:19,625 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-20 11:48:19,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:48:19,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805571428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:19,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:48:19,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2022-11-20 11:48:19,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375548637] [2022-11-20 11:48:19,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:19,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:48:19,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:19,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:48:19,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:48:19,630 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-20 11:48:19,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 634 transitions, 1500 flow. Second operand has 6 states, 6 states have (on average 582.8333333333334) internal successors, (3497), 6 states have internal predecessors, (3497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:19,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:19,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-20 11:48:19,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:21,122 INFO L130 PetriNetUnfolder]: 532/4842 cut-off events. [2022-11-20 11:48:21,122 INFO L131 PetriNetUnfolder]: For 106/109 co-relation queries the response was YES. [2022-11-20 11:48:21,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5816 conditions, 4842 events. 532/4842 cut-off events. For 106/109 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 48355 event pairs, 87 based on Foata normal form. 0/4035 useless extension candidates. Maximal degree in co-relation 1833. Up to 252 conditions per place. [2022-11-20 11:48:21,167 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 54 selfloop transitions, 7 changer transitions 0/646 dead transitions. [2022-11-20 11:48:21,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 646 transitions, 1651 flow [2022-11-20 11:48:21,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:48:21,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:48:21,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4129 transitions. [2022-11-20 11:48:21,176 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8950791242141773 [2022-11-20 11:48:21,176 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4129 transitions. [2022-11-20 11:48:21,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4129 transitions. [2022-11-20 11:48:21,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:21,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4129 transitions. [2022-11-20 11:48:21,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 589.8571428571429) internal successors, (4129), 7 states have internal predecessors, (4129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:21,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:21,192 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:21,193 INFO L175 Difference]: Start difference. First operand has 603 places, 634 transitions, 1500 flow. Second operand 7 states and 4129 transitions. [2022-11-20 11:48:21,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 646 transitions, 1651 flow [2022-11-20 11:48:21,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 646 transitions, 1604 flow, removed 2 selfloop flow, removed 9 redundant places. [2022-11-20 11:48:21,206 INFO L231 Difference]: Finished difference. Result has 599 places, 633 transitions, 1465 flow [2022-11-20 11:48:21,207 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1451, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1465, PETRI_PLACES=599, PETRI_TRANSITIONS=633} [2022-11-20 11:48:21,209 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 13 predicate places. [2022-11-20 11:48:21,210 INFO L495 AbstractCegarLoop]: Abstraction has has 599 places, 633 transitions, 1465 flow [2022-11-20 11:48:21,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 582.8333333333334) internal successors, (3497), 6 states have internal predecessors, (3497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:21,212 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:21,212 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:21,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:48:21,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:48:21,419 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:21,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:21,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1621504219, now seen corresponding path program 1 times [2022-11-20 11:48:21,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:21,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433903719] [2022-11-20 11:48:21,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:21,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:21,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:21,569 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-20 11:48:21,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:21,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433903719] [2022-11-20 11:48:21,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433903719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:21,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:21,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:48:21,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528600401] [2022-11-20 11:48:21,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:21,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:48:21,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:21,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:48:21,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:48:21,578 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-20 11:48:21,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 599 places, 633 transitions, 1465 flow. Second operand has 4 states, 4 states have (on average 582.75) internal successors, (2331), 4 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:21,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:21,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-20 11:48:21,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:22,995 INFO L130 PetriNetUnfolder]: 505/5493 cut-off events. [2022-11-20 11:48:22,995 INFO L131 PetriNetUnfolder]: For 91/94 co-relation queries the response was YES. [2022-11-20 11:48:23,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6441 conditions, 5493 events. 505/5493 cut-off events. For 91/94 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 56035 event pairs, 90 based on Foata normal form. 12/4611 useless extension candidates. Maximal degree in co-relation 3716. Up to 295 conditions per place. [2022-11-20 11:48:23,091 INFO L137 encePairwiseOnDemand]: 647/659 looper letters, 59 selfloop transitions, 8 changer transitions 0/652 dead transitions. [2022-11-20 11:48:23,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 652 transitions, 1638 flow [2022-11-20 11:48:23,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:48:23,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:48:23,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2395 transitions. [2022-11-20 11:48:23,097 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9085735963581184 [2022-11-20 11:48:23,097 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2395 transitions. [2022-11-20 11:48:23,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2395 transitions. [2022-11-20 11:48:23,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:23,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2395 transitions. [2022-11-20 11:48:23,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 598.75) internal successors, (2395), 4 states have internal predecessors, (2395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:23,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:23,108 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:23,108 INFO L175 Difference]: Start difference. First operand has 599 places, 633 transitions, 1465 flow. Second operand 4 states and 2395 transitions. [2022-11-20 11:48:23,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 652 transitions, 1638 flow [2022-11-20 11:48:23,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 652 transitions, 1628 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:48:23,122 INFO L231 Difference]: Finished difference. Result has 599 places, 635 transitions, 1501 flow [2022-11-20 11:48:23,123 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1449, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1501, PETRI_PLACES=599, PETRI_TRANSITIONS=635} [2022-11-20 11:48:23,127 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 13 predicate places. [2022-11-20 11:48:23,128 INFO L495 AbstractCegarLoop]: Abstraction has has 599 places, 635 transitions, 1501 flow [2022-11-20 11:48:23,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 582.75) internal successors, (2331), 4 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:23,129 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:23,130 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:23,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:48:23,130 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:23,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:23,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1565375734, now seen corresponding path program 1 times [2022-11-20 11:48:23,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:23,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999213746] [2022-11-20 11:48:23,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:23,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:23,447 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-20 11:48:23,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:23,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999213746] [2022-11-20 11:48:23,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999213746] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:48:23,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700140759] [2022-11-20 11:48:23,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:23,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:48:23,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:48:23,450 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:48:23,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:48:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:23,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:48:23,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:48:23,869 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-20 11:48:23,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:48:24,058 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-20 11:48:24,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700140759] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:48:24,058 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:48:24,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-20 11:48:24,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41532191] [2022-11-20 11:48:24,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:48:24,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:48:24,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:24,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:48:24,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:48:24,070 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 595 out of 659 [2022-11-20 11:48:24,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 599 places, 635 transitions, 1501 flow. Second operand has 22 states, 22 states have (on average 598.6818181818181) internal successors, (13171), 22 states have internal predecessors, (13171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:24,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:24,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 595 of 659 [2022-11-20 11:48:24,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:24,699 INFO L130 PetriNetUnfolder]: 34/776 cut-off events. [2022-11-20 11:48:24,699 INFO L131 PetriNetUnfolder]: For 80/85 co-relation queries the response was YES. [2022-11-20 11:48:24,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 776 events. 34/776 cut-off events. For 80/85 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3097 event pairs, 0 based on Foata normal form. 4/688 useless extension candidates. Maximal degree in co-relation 859. Up to 20 conditions per place. [2022-11-20 11:48:24,722 INFO L137 encePairwiseOnDemand]: 643/659 looper letters, 55 selfloop transitions, 34 changer transitions 0/661 dead transitions. [2022-11-20 11:48:24,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 661 transitions, 1753 flow [2022-11-20 11:48:24,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:48:24,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 11:48:24,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 10208 transitions. [2022-11-20 11:48:24,740 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.911184504150674 [2022-11-20 11:48:24,741 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 10208 transitions. [2022-11-20 11:48:24,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 10208 transitions. [2022-11-20 11:48:24,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:24,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 10208 transitions. [2022-11-20 11:48:24,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 600.4705882352941) internal successors, (10208), 17 states have internal predecessors, (10208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:24,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 659.0) internal successors, (11862), 18 states have internal predecessors, (11862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:24,777 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 659.0) internal successors, (11862), 18 states have internal predecessors, (11862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:24,777 INFO L175 Difference]: Start difference. First operand has 599 places, 635 transitions, 1501 flow. Second operand 17 states and 10208 transitions. [2022-11-20 11:48:24,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 661 transitions, 1753 flow [2022-11-20 11:48:24,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 661 transitions, 1753 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:48:24,791 INFO L231 Difference]: Finished difference. Result has 617 places, 633 transitions, 1575 flow [2022-11-20 11:48:24,793 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1489, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1575, PETRI_PLACES=617, PETRI_TRANSITIONS=633} [2022-11-20 11:48:24,793 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 31 predicate places. [2022-11-20 11:48:24,794 INFO L495 AbstractCegarLoop]: Abstraction has has 617 places, 633 transitions, 1575 flow [2022-11-20 11:48:24,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 598.6818181818181) internal successors, (13171), 22 states have internal predecessors, (13171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:24,798 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:24,799 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:24,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-20 11:48:25,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:48:25,005 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:25,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:25,006 INFO L85 PathProgramCache]: Analyzing trace with hash 422140398, now seen corresponding path program 2 times [2022-11-20 11:48:25,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:25,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597987763] [2022-11-20 11:48:25,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:25,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:48:25,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:25,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597987763] [2022-11-20 11:48:25,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597987763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:25,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:25,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:48:25,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875222171] [2022-11-20 11:48:25,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:25,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:48:25,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:25,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:48:25,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:48:25,238 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-20 11:48:25,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 617 places, 633 transitions, 1575 flow. Second operand has 6 states, 6 states have (on average 583.0) internal successors, (3498), 6 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:25,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:25,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-20 11:48:25,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:26,040 INFO L130 PetriNetUnfolder]: 309/1940 cut-off events. [2022-11-20 11:48:26,040 INFO L131 PetriNetUnfolder]: For 316/321 co-relation queries the response was YES. [2022-11-20 11:48:26,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2694 conditions, 1940 events. 309/1940 cut-off events. For 316/321 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 16553 event pairs, 85 based on Foata normal form. 0/1558 useless extension candidates. Maximal degree in co-relation 2351. Up to 210 conditions per place. [2022-11-20 11:48:26,057 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 52 selfloop transitions, 7 changer transitions 0/643 dead transitions. [2022-11-20 11:48:26,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 643 transitions, 1716 flow [2022-11-20 11:48:26,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:48:26,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:48:26,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4127 transitions. [2022-11-20 11:48:26,069 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8946455668762194 [2022-11-20 11:48:26,069 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4127 transitions. [2022-11-20 11:48:26,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4127 transitions. [2022-11-20 11:48:26,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:26,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4127 transitions. [2022-11-20 11:48:26,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 589.5714285714286) internal successors, (4127), 7 states have internal predecessors, (4127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:26,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:26,087 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:26,087 INFO L175 Difference]: Start difference. First operand has 617 places, 633 transitions, 1575 flow. Second operand 7 states and 4127 transitions. [2022-11-20 11:48:26,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 643 transitions, 1716 flow [2022-11-20 11:48:26,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 606 places, 643 transitions, 1648 flow, removed 0 selfloop flow, removed 16 redundant places. [2022-11-20 11:48:26,105 INFO L231 Difference]: Finished difference. Result has 606 places, 632 transitions, 1519 flow [2022-11-20 11:48:26,106 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1505, PETRI_DIFFERENCE_MINUEND_PLACES=600, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1519, PETRI_PLACES=606, PETRI_TRANSITIONS=632} [2022-11-20 11:48:26,107 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 20 predicate places. [2022-11-20 11:48:26,107 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 632 transitions, 1519 flow [2022-11-20 11:48:26,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 583.0) internal successors, (3498), 6 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:26,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:26,108 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:26,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:48:26,109 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:26,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:26,109 INFO L85 PathProgramCache]: Analyzing trace with hash 201452365, now seen corresponding path program 1 times [2022-11-20 11:48:26,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:26,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696854567] [2022-11-20 11:48:26,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:26,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:26,292 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:48:26,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:26,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696854567] [2022-11-20 11:48:26,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696854567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:26,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:26,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:48:26,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559538075] [2022-11-20 11:48:26,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:26,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:48:26,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:26,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:48:26,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:48:26,298 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-20 11:48:26,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 632 transitions, 1519 flow. Second operand has 4 states, 4 states have (on average 583.0) internal successors, (2332), 4 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:26,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:26,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-20 11:48:26,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:27,224 INFO L130 PetriNetUnfolder]: 362/2138 cut-off events. [2022-11-20 11:48:27,225 INFO L131 PetriNetUnfolder]: For 403/408 co-relation queries the response was YES. [2022-11-20 11:48:27,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3022 conditions, 2138 events. 362/2138 cut-off events. For 403/408 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 19618 event pairs, 150 based on Foata normal form. 12/1659 useless extension candidates. Maximal degree in co-relation 2714. Up to 344 conditions per place. [2022-11-20 11:48:27,267 INFO L137 encePairwiseOnDemand]: 647/659 looper letters, 58 selfloop transitions, 8 changer transitions 0/650 dead transitions. [2022-11-20 11:48:27,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 650 transitions, 1687 flow [2022-11-20 11:48:27,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:48:27,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:48:27,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2394 transitions. [2022-11-20 11:48:27,274 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9081942336874052 [2022-11-20 11:48:27,274 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2394 transitions. [2022-11-20 11:48:27,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2394 transitions. [2022-11-20 11:48:27,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:27,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2394 transitions. [2022-11-20 11:48:27,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 598.5) internal successors, (2394), 4 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:27,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:27,286 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:27,286 INFO L175 Difference]: Start difference. First operand has 606 places, 632 transitions, 1519 flow. Second operand 4 states and 2394 transitions. [2022-11-20 11:48:27,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 650 transitions, 1687 flow [2022-11-20 11:48:27,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 650 transitions, 1677 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:48:27,304 INFO L231 Difference]: Finished difference. Result has 606 places, 634 transitions, 1555 flow [2022-11-20 11:48:27,306 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1503, PETRI_DIFFERENCE_MINUEND_PLACES=600, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1555, PETRI_PLACES=606, PETRI_TRANSITIONS=634} [2022-11-20 11:48:27,306 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 20 predicate places. [2022-11-20 11:48:27,307 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 634 transitions, 1555 flow [2022-11-20 11:48:27,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 583.0) internal successors, (2332), 4 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:27,307 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:27,308 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:27,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:48:27,308 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:27,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:27,309 INFO L85 PathProgramCache]: Analyzing trace with hash -600930570, now seen corresponding path program 1 times [2022-11-20 11:48:27,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:27,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983562736] [2022-11-20 11:48:27,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:27,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:27,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:27,470 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:48:27,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:27,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983562736] [2022-11-20 11:48:27,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983562736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:27,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:27,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:48:27,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180146614] [2022-11-20 11:48:27,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:27,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:48:27,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:27,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:48:27,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:48:27,475 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-20 11:48:27,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 634 transitions, 1555 flow. Second operand has 4 states, 4 states have (on average 583.25) internal successors, (2333), 4 states have internal predecessors, (2333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:27,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:27,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-20 11:48:27,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:28,179 INFO L130 PetriNetUnfolder]: 153/2434 cut-off events. [2022-11-20 11:48:28,179 INFO L131 PetriNetUnfolder]: For 139/140 co-relation queries the response was YES. [2022-11-20 11:48:28,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2984 conditions, 2434 events. 153/2434 cut-off events. For 139/140 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 19421 event pairs, 24 based on Foata normal form. 4/2116 useless extension candidates. Maximal degree in co-relation 2677. Up to 95 conditions per place. [2022-11-20 11:48:28,209 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 59 selfloop transitions, 6 changer transitions 0/649 dead transitions. [2022-11-20 11:48:28,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 649 transitions, 1710 flow [2022-11-20 11:48:28,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:48:28,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:48:28,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2391 transitions. [2022-11-20 11:48:28,212 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9070561456752656 [2022-11-20 11:48:28,213 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2391 transitions. [2022-11-20 11:48:28,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2391 transitions. [2022-11-20 11:48:28,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:28,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2391 transitions. [2022-11-20 11:48:28,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 597.75) internal successors, (2391), 4 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:28,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:28,220 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:28,221 INFO L175 Difference]: Start difference. First operand has 606 places, 634 transitions, 1555 flow. Second operand 4 states and 2391 transitions. [2022-11-20 11:48:28,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 649 transitions, 1710 flow [2022-11-20 11:48:28,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 649 transitions, 1706 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:48:28,236 INFO L231 Difference]: Finished difference. Result has 608 places, 632 transitions, 1551 flow [2022-11-20 11:48:28,238 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1551, PETRI_PLACES=608, PETRI_TRANSITIONS=632} [2022-11-20 11:48:28,238 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 22 predicate places. [2022-11-20 11:48:28,238 INFO L495 AbstractCegarLoop]: Abstraction has has 608 places, 632 transitions, 1551 flow [2022-11-20 11:48:28,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 583.25) internal successors, (2333), 4 states have internal predecessors, (2333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:28,239 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:28,240 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:28,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:48:28,240 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:28,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:28,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1288579348, now seen corresponding path program 1 times [2022-11-20 11:48:28,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:28,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632590106] [2022-11-20 11:48:28,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:28,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:28,483 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:48:28,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:28,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632590106] [2022-11-20 11:48:28,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632590106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:28,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:28,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:48:28,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132919334] [2022-11-20 11:48:28,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:28,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:48:28,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:28,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:48:28,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:48:28,489 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-20 11:48:28,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 632 transitions, 1551 flow. Second operand has 6 states, 6 states have (on average 582.8333333333334) internal successors, (3497), 6 states have internal predecessors, (3497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:28,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:28,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-20 11:48:28,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:29,158 INFO L130 PetriNetUnfolder]: 196/2450 cut-off events. [2022-11-20 11:48:29,158 INFO L131 PetriNetUnfolder]: For 125/126 co-relation queries the response was YES. [2022-11-20 11:48:29,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3123 conditions, 2450 events. 196/2450 cut-off events. For 125/126 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 21747 event pairs, 43 based on Foata normal form. 0/2132 useless extension candidates. Maximal degree in co-relation 2811. Up to 144 conditions per place. [2022-11-20 11:48:29,192 INFO L137 encePairwiseOnDemand]: 652/659 looper letters, 52 selfloop transitions, 6 changer transitions 0/644 dead transitions. [2022-11-20 11:48:29,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 644 transitions, 1696 flow [2022-11-20 11:48:29,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:48:29,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:48:29,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4126 transitions. [2022-11-20 11:48:29,200 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8944287882072404 [2022-11-20 11:48:29,201 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4126 transitions. [2022-11-20 11:48:29,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4126 transitions. [2022-11-20 11:48:29,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:29,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4126 transitions. [2022-11-20 11:48:29,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 589.4285714285714) internal successors, (4126), 7 states have internal predecessors, (4126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:29,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:29,213 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:29,213 INFO L175 Difference]: Start difference. First operand has 608 places, 632 transitions, 1551 flow. Second operand 7 states and 4126 transitions. [2022-11-20 11:48:29,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 644 transitions, 1696 flow [2022-11-20 11:48:29,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 644 transitions, 1686 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:48:29,228 INFO L231 Difference]: Finished difference. Result has 611 places, 631 transitions, 1551 flow [2022-11-20 11:48:29,230 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1551, PETRI_PLACES=611, PETRI_TRANSITIONS=631} [2022-11-20 11:48:29,231 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 25 predicate places. [2022-11-20 11:48:29,232 INFO L495 AbstractCegarLoop]: Abstraction has has 611 places, 631 transitions, 1551 flow [2022-11-20 11:48:29,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 582.8333333333334) internal successors, (3497), 6 states have internal predecessors, (3497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:29,233 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:29,233 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:29,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:48:29,234 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:29,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:29,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1448976760, now seen corresponding path program 1 times [2022-11-20 11:48:29,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:29,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094269145] [2022-11-20 11:48:29,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:29,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:29,460 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:48:29,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:29,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094269145] [2022-11-20 11:48:29,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094269145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:29,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:29,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:48:29,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361879121] [2022-11-20 11:48:29,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:29,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:48:29,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:29,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:48:29,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:48:29,465 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-20 11:48:29,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 631 transitions, 1551 flow. Second operand has 6 states, 6 states have (on average 583.1666666666666) internal successors, (3499), 6 states have internal predecessors, (3499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:29,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:29,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-20 11:48:29,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:30,125 INFO L130 PetriNetUnfolder]: 194/2445 cut-off events. [2022-11-20 11:48:30,125 INFO L131 PetriNetUnfolder]: For 129/130 co-relation queries the response was YES. [2022-11-20 11:48:30,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3112 conditions, 2445 events. 194/2445 cut-off events. For 129/130 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 20547 event pairs, 60 based on Foata normal form. 0/2137 useless extension candidates. Maximal degree in co-relation 2797. Up to 158 conditions per place. [2022-11-20 11:48:30,155 INFO L137 encePairwiseOnDemand]: 652/659 looper letters, 45 selfloop transitions, 6 changer transitions 0/637 dead transitions. [2022-11-20 11:48:30,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 637 transitions, 1669 flow [2022-11-20 11:48:30,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:48:30,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:48:30,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4119 transitions. [2022-11-20 11:48:30,160 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8929113375243876 [2022-11-20 11:48:30,160 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4119 transitions. [2022-11-20 11:48:30,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4119 transitions. [2022-11-20 11:48:30,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:30,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4119 transitions. [2022-11-20 11:48:30,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 588.4285714285714) internal successors, (4119), 7 states have internal predecessors, (4119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:30,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:30,172 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:30,172 INFO L175 Difference]: Start difference. First operand has 611 places, 631 transitions, 1551 flow. Second operand 7 states and 4119 transitions. [2022-11-20 11:48:30,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 637 transitions, 1669 flow [2022-11-20 11:48:30,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 637 transitions, 1659 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:48:30,188 INFO L231 Difference]: Finished difference. Result has 612 places, 630 transitions, 1551 flow [2022-11-20 11:48:30,189 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1551, PETRI_PLACES=612, PETRI_TRANSITIONS=630} [2022-11-20 11:48:30,190 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 26 predicate places. [2022-11-20 11:48:30,190 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 630 transitions, 1551 flow [2022-11-20 11:48:30,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 583.1666666666666) internal successors, (3499), 6 states have internal predecessors, (3499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:30,191 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:30,191 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:30,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:48:30,192 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:30,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:30,192 INFO L85 PathProgramCache]: Analyzing trace with hash -85136081, now seen corresponding path program 1 times [2022-11-20 11:48:30,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:30,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802704966] [2022-11-20 11:48:30,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:30,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:30,341 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:48:30,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:30,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802704966] [2022-11-20 11:48:30,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802704966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:30,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:30,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:48:30,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233261178] [2022-11-20 11:48:30,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:30,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:48:30,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:30,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:48:30,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:48:30,346 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-20 11:48:30,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 630 transitions, 1551 flow. Second operand has 4 states, 4 states have (on average 583.5) internal successors, (2334), 4 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:30,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:30,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-20 11:48:30,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:30,996 INFO L130 PetriNetUnfolder]: 161/2487 cut-off events. [2022-11-20 11:48:30,997 INFO L131 PetriNetUnfolder]: For 106/107 co-relation queries the response was YES. [2022-11-20 11:48:31,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3082 conditions, 2487 events. 161/2487 cut-off events. For 106/107 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 20091 event pairs, 36 based on Foata normal form. 4/2167 useless extension candidates. Maximal degree in co-relation 2772. Up to 116 conditions per place. [2022-11-20 11:48:31,022 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 53 selfloop transitions, 6 changer transitions 0/645 dead transitions. [2022-11-20 11:48:31,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 645 transitions, 1696 flow [2022-11-20 11:48:31,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:48:31,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:48:31,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2385 transitions. [2022-11-20 11:48:31,026 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9047799696509864 [2022-11-20 11:48:31,027 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2385 transitions. [2022-11-20 11:48:31,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2385 transitions. [2022-11-20 11:48:31,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:31,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2385 transitions. [2022-11-20 11:48:31,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 596.25) internal successors, (2385), 4 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:31,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:31,035 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:31,035 INFO L175 Difference]: Start difference. First operand has 612 places, 630 transitions, 1551 flow. Second operand 4 states and 2385 transitions. [2022-11-20 11:48:31,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 645 transitions, 1696 flow [2022-11-20 11:48:31,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 645 transitions, 1683 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:48:31,052 INFO L231 Difference]: Finished difference. Result has 608 places, 630 transitions, 1554 flow [2022-11-20 11:48:31,053 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1528, PETRI_DIFFERENCE_MINUEND_PLACES=604, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1554, PETRI_PLACES=608, PETRI_TRANSITIONS=630} [2022-11-20 11:48:31,055 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 22 predicate places. [2022-11-20 11:48:31,055 INFO L495 AbstractCegarLoop]: Abstraction has has 608 places, 630 transitions, 1554 flow [2022-11-20 11:48:31,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 583.5) internal successors, (2334), 4 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:31,056 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:31,056 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:31,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:48:31,057 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:31,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:31,058 INFO L85 PathProgramCache]: Analyzing trace with hash 306042144, now seen corresponding path program 1 times [2022-11-20 11:48:31,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:31,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951635920] [2022-11-20 11:48:31,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:31,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:31,261 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:48:31,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:31,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951635920] [2022-11-20 11:48:31,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951635920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:31,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:31,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:48:31,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65466357] [2022-11-20 11:48:31,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:31,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:48:31,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:31,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:48:31,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:48:31,267 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-20 11:48:31,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 630 transitions, 1554 flow. Second operand has 6 states, 6 states have (on average 583.0) internal successors, (3498), 6 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:31,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:31,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-20 11:48:31,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:32,145 INFO L130 PetriNetUnfolder]: 518/3266 cut-off events. [2022-11-20 11:48:32,145 INFO L131 PetriNetUnfolder]: For 604/611 co-relation queries the response was YES. [2022-11-20 11:48:32,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4674 conditions, 3266 events. 518/3266 cut-off events. For 604/611 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 34653 event pairs, 161 based on Foata normal form. 0/2632 useless extension candidates. Maximal degree in co-relation 4361. Up to 468 conditions per place. [2022-11-20 11:48:32,182 INFO L137 encePairwiseOnDemand]: 652/659 looper letters, 52 selfloop transitions, 6 changer transitions 0/640 dead transitions. [2022-11-20 11:48:32,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 640 transitions, 1693 flow [2022-11-20 11:48:32,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:48:32,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:48:32,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4124 transitions. [2022-11-20 11:48:32,187 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8939952308692825 [2022-11-20 11:48:32,188 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4124 transitions. [2022-11-20 11:48:32,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4124 transitions. [2022-11-20 11:48:32,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:32,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4124 transitions. [2022-11-20 11:48:32,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 589.1428571428571) internal successors, (4124), 7 states have internal predecessors, (4124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:32,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:32,200 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:32,200 INFO L175 Difference]: Start difference. First operand has 608 places, 630 transitions, 1554 flow. Second operand 7 states and 4124 transitions. [2022-11-20 11:48:32,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 640 transitions, 1693 flow [2022-11-20 11:48:32,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 640 transitions, 1689 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:48:32,217 INFO L231 Difference]: Finished difference. Result has 612 places, 629 transitions, 1560 flow [2022-11-20 11:48:32,218 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1548, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1560, PETRI_PLACES=612, PETRI_TRANSITIONS=629} [2022-11-20 11:48:32,218 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 26 predicate places. [2022-11-20 11:48:32,218 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 629 transitions, 1560 flow [2022-11-20 11:48:32,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 583.0) internal successors, (3498), 6 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:32,220 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:32,220 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:32,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 11:48:32,220 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:32,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:32,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1583467774, now seen corresponding path program 1 times [2022-11-20 11:48:32,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:32,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484183853] [2022-11-20 11:48:32,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:32,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:32,348 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:48:32,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:32,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484183853] [2022-11-20 11:48:32,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484183853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:32,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:32,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:48:32,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281358991] [2022-11-20 11:48:32,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:32,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:48:32,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:32,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:48:32,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:48:32,352 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-20 11:48:32,354 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 629 transitions, 1560 flow. Second operand has 4 states, 4 states have (on average 583.5) internal successors, (2334), 4 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:32,354 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:32,354 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-20 11:48:32,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:33,266 INFO L130 PetriNetUnfolder]: 500/2879 cut-off events. [2022-11-20 11:48:33,266 INFO L131 PetriNetUnfolder]: For 730/737 co-relation queries the response was YES. [2022-11-20 11:48:33,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4254 conditions, 2879 events. 500/2879 cut-off events. For 730/737 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 29673 event pairs, 168 based on Foata normal form. 16/2205 useless extension candidates. Maximal degree in co-relation 3943. Up to 540 conditions per place. [2022-11-20 11:48:33,307 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 57 selfloop transitions, 6 changer transitions 0/643 dead transitions. [2022-11-20 11:48:33,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 643 transitions, 1708 flow [2022-11-20 11:48:33,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:48:33,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:48:33,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2389 transitions. [2022-11-20 11:48:33,311 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9062974203338392 [2022-11-20 11:48:33,311 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2389 transitions. [2022-11-20 11:48:33,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2389 transitions. [2022-11-20 11:48:33,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:33,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2389 transitions. [2022-11-20 11:48:33,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 597.25) internal successors, (2389), 4 states have internal predecessors, (2389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:33,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:33,319 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:33,319 INFO L175 Difference]: Start difference. First operand has 612 places, 629 transitions, 1560 flow. Second operand 4 states and 2389 transitions. [2022-11-20 11:48:33,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 643 transitions, 1708 flow [2022-11-20 11:48:33,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 643 transitions, 1694 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:48:33,337 INFO L231 Difference]: Finished difference. Result has 610 places, 627 transitions, 1546 flow [2022-11-20 11:48:33,338 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1534, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1546, PETRI_PLACES=610, PETRI_TRANSITIONS=627} [2022-11-20 11:48:33,339 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 24 predicate places. [2022-11-20 11:48:33,339 INFO L495 AbstractCegarLoop]: Abstraction has has 610 places, 627 transitions, 1546 flow [2022-11-20 11:48:33,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 583.5) internal successors, (2334), 4 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:33,340 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:33,340 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:33,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 11:48:33,341 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:33,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:33,341 INFO L85 PathProgramCache]: Analyzing trace with hash 691186199, now seen corresponding path program 1 times [2022-11-20 11:48:33,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:33,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835793052] [2022-11-20 11:48:33,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:33,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:33,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:33,613 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:48:33,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:33,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835793052] [2022-11-20 11:48:33,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835793052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:33,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:33,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:48:33,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597463424] [2022-11-20 11:48:33,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:33,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:48:33,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:33,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:48:33,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:48:33,620 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-20 11:48:33,623 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 627 transitions, 1546 flow. Second operand has 8 states, 8 states have (on average 573.0) internal successors, (4584), 8 states have internal predecessors, (4584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:33,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:33,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-20 11:48:33,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:34,459 INFO L130 PetriNetUnfolder]: 203/2223 cut-off events. [2022-11-20 11:48:34,459 INFO L131 PetriNetUnfolder]: For 115/116 co-relation queries the response was YES. [2022-11-20 11:48:34,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3019 conditions, 2223 events. 203/2223 cut-off events. For 115/116 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 18582 event pairs, 41 based on Foata normal form. 0/1975 useless extension candidates. Maximal degree in co-relation 2707. Up to 109 conditions per place. [2022-11-20 11:48:34,501 INFO L137 encePairwiseOnDemand]: 646/659 looper letters, 59 selfloop transitions, 12 changer transitions 0/644 dead transitions. [2022-11-20 11:48:34,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 644 transitions, 1730 flow [2022-11-20 11:48:34,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:48:34,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:48:34,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5782 transitions. [2022-11-20 11:48:34,508 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8773899848254931 [2022-11-20 11:48:34,508 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5782 transitions. [2022-11-20 11:48:34,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5782 transitions. [2022-11-20 11:48:34,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:34,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5782 transitions. [2022-11-20 11:48:34,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 578.2) internal successors, (5782), 10 states have internal predecessors, (5782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:34,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:34,525 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:34,525 INFO L175 Difference]: Start difference. First operand has 610 places, 627 transitions, 1546 flow. Second operand 10 states and 5782 transitions. [2022-11-20 11:48:34,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 644 transitions, 1730 flow [2022-11-20 11:48:34,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 644 transitions, 1720 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:48:34,540 INFO L231 Difference]: Finished difference. Result has 619 places, 628 transitions, 1572 flow [2022-11-20 11:48:34,541 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1536, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=615, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1572, PETRI_PLACES=619, PETRI_TRANSITIONS=628} [2022-11-20 11:48:34,541 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 33 predicate places. [2022-11-20 11:48:34,542 INFO L495 AbstractCegarLoop]: Abstraction has has 619 places, 628 transitions, 1572 flow [2022-11-20 11:48:34,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.0) internal successors, (4584), 8 states have internal predecessors, (4584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:34,543 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:34,543 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:34,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 11:48:34,544 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:34,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:34,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1842858775, now seen corresponding path program 1 times [2022-11-20 11:48:34,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:34,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782477910] [2022-11-20 11:48:34,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:34,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:34,761 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:48:34,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:34,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782477910] [2022-11-20 11:48:34,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782477910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:34,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:34,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:48:34,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315625748] [2022-11-20 11:48:34,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:34,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:48:34,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:34,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:48:34,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:48:34,768 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-20 11:48:34,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 619 places, 628 transitions, 1572 flow. Second operand has 6 states, 6 states have (on average 583.3333333333334) internal successors, (3500), 6 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:34,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:34,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-20 11:48:34,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:35,671 INFO L130 PetriNetUnfolder]: 492/3229 cut-off events. [2022-11-20 11:48:35,671 INFO L131 PetriNetUnfolder]: For 588/613 co-relation queries the response was YES. [2022-11-20 11:48:35,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4662 conditions, 3229 events. 492/3229 cut-off events. For 588/613 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 33354 event pairs, 225 based on Foata normal form. 0/2609 useless extension candidates. Maximal degree in co-relation 4345. Up to 491 conditions per place. [2022-11-20 11:48:35,704 INFO L137 encePairwiseOnDemand]: 652/659 looper letters, 44 selfloop transitions, 6 changer transitions 0/633 dead transitions. [2022-11-20 11:48:35,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 633 transitions, 1691 flow [2022-11-20 11:48:35,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:48:35,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:48:35,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4118 transitions. [2022-11-20 11:48:35,709 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8926945588554086 [2022-11-20 11:48:35,710 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4118 transitions. [2022-11-20 11:48:35,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4118 transitions. [2022-11-20 11:48:35,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:35,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4118 transitions. [2022-11-20 11:48:35,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 588.2857142857143) internal successors, (4118), 7 states have internal predecessors, (4118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:35,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:35,721 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:35,721 INFO L175 Difference]: Start difference. First operand has 619 places, 628 transitions, 1572 flow. Second operand 7 states and 4118 transitions. [2022-11-20 11:48:35,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 633 transitions, 1691 flow [2022-11-20 11:48:35,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 620 places, 633 transitions, 1671 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-20 11:48:35,736 INFO L231 Difference]: Finished difference. Result has 620 places, 627 transitions, 1568 flow [2022-11-20 11:48:35,737 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1556, PETRI_DIFFERENCE_MINUEND_PLACES=614, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1568, PETRI_PLACES=620, PETRI_TRANSITIONS=627} [2022-11-20 11:48:35,753 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 34 predicate places. [2022-11-20 11:48:35,753 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 627 transitions, 1568 flow [2022-11-20 11:48:35,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 583.3333333333334) internal successors, (3500), 6 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:35,754 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:35,754 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:35,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 11:48:35,755 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:35,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:35,755 INFO L85 PathProgramCache]: Analyzing trace with hash -48062547, now seen corresponding path program 1 times [2022-11-20 11:48:35,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:35,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523005637] [2022-11-20 11:48:35,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:35,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:36,045 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:48:36,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:36,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523005637] [2022-11-20 11:48:36,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523005637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:36,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:36,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:48:36,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417898250] [2022-11-20 11:48:36,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:36,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:48:36,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:36,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:48:36,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:48:36,052 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-20 11:48:36,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 627 transitions, 1568 flow. Second operand has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:36,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:36,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-20 11:48:36,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:36,828 INFO L130 PetriNetUnfolder]: 183/2194 cut-off events. [2022-11-20 11:48:36,828 INFO L131 PetriNetUnfolder]: For 202/203 co-relation queries the response was YES. [2022-11-20 11:48:36,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3053 conditions, 2194 events. 183/2194 cut-off events. For 202/203 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 18125 event pairs, 43 based on Foata normal form. 0/1955 useless extension candidates. Maximal degree in co-relation 2736. Up to 114 conditions per place. [2022-11-20 11:48:36,854 INFO L137 encePairwiseOnDemand]: 645/659 looper letters, 61 selfloop transitions, 13 changer transitions 0/646 dead transitions. [2022-11-20 11:48:36,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 646 transitions, 1781 flow [2022-11-20 11:48:36,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:48:36,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:48:36,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5784 transitions. [2022-11-20 11:48:36,860 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8776934749620637 [2022-11-20 11:48:36,860 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5784 transitions. [2022-11-20 11:48:36,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5784 transitions. [2022-11-20 11:48:36,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:36,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5784 transitions. [2022-11-20 11:48:36,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 578.4) internal successors, (5784), 10 states have internal predecessors, (5784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:36,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:36,873 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:36,874 INFO L175 Difference]: Start difference. First operand has 620 places, 627 transitions, 1568 flow. Second operand 10 states and 5784 transitions. [2022-11-20 11:48:36,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 646 transitions, 1781 flow [2022-11-20 11:48:36,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 646 transitions, 1759 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:48:36,890 INFO L231 Difference]: Finished difference. Result has 627 places, 628 transitions, 1596 flow [2022-11-20 11:48:36,891 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1558, PETRI_DIFFERENCE_MINUEND_PLACES=616, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=614, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1596, PETRI_PLACES=627, PETRI_TRANSITIONS=628} [2022-11-20 11:48:36,891 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 41 predicate places. [2022-11-20 11:48:36,892 INFO L495 AbstractCegarLoop]: Abstraction has has 627 places, 628 transitions, 1596 flow [2022-11-20 11:48:36,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:36,893 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:36,893 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:36,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 11:48:36,894 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:36,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:36,894 INFO L85 PathProgramCache]: Analyzing trace with hash 959887276, now seen corresponding path program 1 times [2022-11-20 11:48:36,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:36,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72964554] [2022-11-20 11:48:36,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:36,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:36,976 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:48:36,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:36,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72964554] [2022-11-20 11:48:36,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72964554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:36,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:36,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:48:36,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005888186] [2022-11-20 11:48:36,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:36,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:48:36,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:36,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:48:36,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:48:36,981 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 620 out of 659 [2022-11-20 11:48:36,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 628 transitions, 1596 flow. Second operand has 3 states, 3 states have (on average 621.3333333333334) internal successors, (1864), 3 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:36,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:36,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 620 of 659 [2022-11-20 11:48:36,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:37,517 INFO L130 PetriNetUnfolder]: 55/1501 cut-off events. [2022-11-20 11:48:37,517 INFO L131 PetriNetUnfolder]: For 91/98 co-relation queries the response was YES. [2022-11-20 11:48:37,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1833 conditions, 1501 events. 55/1501 cut-off events. For 91/98 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 8331 event pairs, 5 based on Foata normal form. 0/1342 useless extension candidates. Maximal degree in co-relation 1725. Up to 32 conditions per place. [2022-11-20 11:48:37,551 INFO L137 encePairwiseOnDemand]: 655/659 looper letters, 10 selfloop transitions, 3 changer transitions 0/631 dead transitions. [2022-11-20 11:48:37,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 631 transitions, 1629 flow [2022-11-20 11:48:37,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:48:37,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:48:37,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1874 transitions. [2022-11-20 11:48:37,555 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9479008598887203 [2022-11-20 11:48:37,555 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1874 transitions. [2022-11-20 11:48:37,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1874 transitions. [2022-11-20 11:48:37,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:37,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1874 transitions. [2022-11-20 11:48:37,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 624.6666666666666) internal successors, (1874), 3 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:37,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:37,563 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:37,563 INFO L175 Difference]: Start difference. First operand has 627 places, 628 transitions, 1596 flow. Second operand 3 states and 1874 transitions. [2022-11-20 11:48:37,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 631 transitions, 1629 flow [2022-11-20 11:48:37,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 631 transitions, 1614 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-20 11:48:37,581 INFO L231 Difference]: Finished difference. Result has 627 places, 630 transitions, 1603 flow [2022-11-20 11:48:37,582 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=623, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1603, PETRI_PLACES=627, PETRI_TRANSITIONS=630} [2022-11-20 11:48:37,582 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 41 predicate places. [2022-11-20 11:48:37,583 INFO L495 AbstractCegarLoop]: Abstraction has has 627 places, 630 transitions, 1603 flow [2022-11-20 11:48:37,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 621.3333333333334) internal successors, (1864), 3 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:37,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:37,584 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:37,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 11:48:37,584 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:37,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:37,585 INFO L85 PathProgramCache]: Analyzing trace with hash -648622864, now seen corresponding path program 1 times [2022-11-20 11:48:37,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:37,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524189205] [2022-11-20 11:48:37,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:37,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:37,754 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:48:37,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:37,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524189205] [2022-11-20 11:48:37,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524189205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:37,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:37,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:48:37,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107112793] [2022-11-20 11:48:37,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:37,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:48:37,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:37,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:48:37,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:48:37,760 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-20 11:48:37,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 630 transitions, 1603 flow. Second operand has 4 states, 4 states have (on average 583.75) internal successors, (2335), 4 states have internal predecessors, (2335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:37,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:37,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-20 11:48:37,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:38,836 INFO L130 PetriNetUnfolder]: 535/2890 cut-off events. [2022-11-20 11:48:38,836 INFO L131 PetriNetUnfolder]: For 609/616 co-relation queries the response was YES. [2022-11-20 11:48:38,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4374 conditions, 2890 events. 535/2890 cut-off events. For 609/616 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 29973 event pairs, 252 based on Foata normal form. 16/2202 useless extension candidates. Maximal degree in co-relation 4298. Up to 550 conditions per place. [2022-11-20 11:48:38,892 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 52 selfloop transitions, 6 changer transitions 0/644 dead transitions. [2022-11-20 11:48:38,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 644 transitions, 1744 flow [2022-11-20 11:48:38,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:48:38,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:48:38,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2384 transitions. [2022-11-20 11:48:38,896 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9044006069802731 [2022-11-20 11:48:38,896 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2384 transitions. [2022-11-20 11:48:38,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2384 transitions. [2022-11-20 11:48:38,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:38,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2384 transitions. [2022-11-20 11:48:38,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:38,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:38,903 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:38,903 INFO L175 Difference]: Start difference. First operand has 627 places, 630 transitions, 1603 flow. Second operand 4 states and 2384 transitions. [2022-11-20 11:48:38,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 644 transitions, 1744 flow [2022-11-20 11:48:38,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 644 transitions, 1734 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:48:38,919 INFO L231 Difference]: Finished difference. Result has 625 places, 630 transitions, 1610 flow [2022-11-20 11:48:38,920 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1584, PETRI_DIFFERENCE_MINUEND_PLACES=621, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1610, PETRI_PLACES=625, PETRI_TRANSITIONS=630} [2022-11-20 11:48:38,922 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 39 predicate places. [2022-11-20 11:48:38,922 INFO L495 AbstractCegarLoop]: Abstraction has has 625 places, 630 transitions, 1610 flow [2022-11-20 11:48:38,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 583.75) internal successors, (2335), 4 states have internal predecessors, (2335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:38,923 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:38,923 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:38,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 11:48:38,924 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:38,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:38,925 INFO L85 PathProgramCache]: Analyzing trace with hash 946969714, now seen corresponding path program 1 times [2022-11-20 11:48:38,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:38,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144876330] [2022-11-20 11:48:38,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:38,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:39,178 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:48:39,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:39,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144876330] [2022-11-20 11:48:39,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144876330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:39,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:39,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:48:39,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064562419] [2022-11-20 11:48:39,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:39,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:48:39,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:39,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:48:39,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:48:39,183 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 541 out of 659 [2022-11-20 11:48:39,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 630 transitions, 1610 flow. Second operand has 6 states, 6 states have (on average 545.0) internal successors, (3270), 6 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:39,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:39,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 541 of 659 [2022-11-20 11:48:39,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:39,948 INFO L130 PetriNetUnfolder]: 168/1394 cut-off events. [2022-11-20 11:48:39,948 INFO L131 PetriNetUnfolder]: For 120/120 co-relation queries the response was YES. [2022-11-20 11:48:39,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2258 conditions, 1394 events. 168/1394 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 9490 event pairs, 76 based on Foata normal form. 2/1271 useless extension candidates. Maximal degree in co-relation 2110. Up to 232 conditions per place. [2022-11-20 11:48:39,975 INFO L137 encePairwiseOnDemand]: 639/659 looper letters, 84 selfloop transitions, 18 changer transitions 0/646 dead transitions. [2022-11-20 11:48:39,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 646 transitions, 1851 flow [2022-11-20 11:48:39,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:48:39,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:48:39,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3890 transitions. [2022-11-20 11:48:39,979 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8432690223282029 [2022-11-20 11:48:39,979 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3890 transitions. [2022-11-20 11:48:39,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3890 transitions. [2022-11-20 11:48:39,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:39,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3890 transitions. [2022-11-20 11:48:39,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 555.7142857142857) internal successors, (3890), 7 states have internal predecessors, (3890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:39,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:39,986 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:39,986 INFO L175 Difference]: Start difference. First operand has 625 places, 630 transitions, 1610 flow. Second operand 7 states and 3890 transitions. [2022-11-20 11:48:39,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 646 transitions, 1851 flow [2022-11-20 11:48:39,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 628 places, 646 transitions, 1845 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:48:40,002 INFO L231 Difference]: Finished difference. Result has 633 places, 638 transitions, 1703 flow [2022-11-20 11:48:40,003 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=622, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=611, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1703, PETRI_PLACES=633, PETRI_TRANSITIONS=638} [2022-11-20 11:48:40,003 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 47 predicate places. [2022-11-20 11:48:40,004 INFO L495 AbstractCegarLoop]: Abstraction has has 633 places, 638 transitions, 1703 flow [2022-11-20 11:48:40,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 545.0) internal successors, (3270), 6 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:40,005 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:40,005 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:40,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 11:48:40,006 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:40,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:40,006 INFO L85 PathProgramCache]: Analyzing trace with hash -453484941, now seen corresponding path program 1 times [2022-11-20 11:48:40,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:40,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529990302] [2022-11-20 11:48:40,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:40,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:40,196 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:48:40,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:40,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529990302] [2022-11-20 11:48:40,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529990302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:40,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:40,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:48:40,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688344491] [2022-11-20 11:48:40,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:40,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:48:40,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:40,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:48:40,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:48:40,201 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-20 11:48:40,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 638 transitions, 1703 flow. Second operand has 6 states, 6 states have (on average 583.1666666666666) internal successors, (3499), 6 states have internal predecessors, (3499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:40,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:40,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-20 11:48:40,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:40,880 INFO L130 PetriNetUnfolder]: 160/2496 cut-off events. [2022-11-20 11:48:40,880 INFO L131 PetriNetUnfolder]: For 219/220 co-relation queries the response was YES. [2022-11-20 11:48:40,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3495 conditions, 2496 events. 160/2496 cut-off events. For 219/220 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 22498 event pairs, 48 based on Foata normal form. 0/2272 useless extension candidates. Maximal degree in co-relation 3407. Up to 129 conditions per place. [2022-11-20 11:48:40,910 INFO L137 encePairwiseOnDemand]: 653/659 looper letters, 43 selfloop transitions, 5 changer transitions 0/642 dead transitions. [2022-11-20 11:48:40,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 637 places, 642 transitions, 1810 flow [2022-11-20 11:48:40,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:48:40,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:48:40,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3532 transitions. [2022-11-20 11:48:40,914 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8932726353060192 [2022-11-20 11:48:40,914 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3532 transitions. [2022-11-20 11:48:40,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3532 transitions. [2022-11-20 11:48:40,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:40,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3532 transitions. [2022-11-20 11:48:40,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 588.6666666666666) internal successors, (3532), 6 states have internal predecessors, (3532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:40,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:40,925 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:40,925 INFO L175 Difference]: Start difference. First operand has 633 places, 638 transitions, 1703 flow. Second operand 6 states and 3532 transitions. [2022-11-20 11:48:40,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 637 places, 642 transitions, 1810 flow [2022-11-20 11:48:40,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 637 places, 642 transitions, 1810 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:48:40,942 INFO L231 Difference]: Finished difference. Result has 637 places, 637 transitions, 1711 flow [2022-11-20 11:48:40,943 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1701, PETRI_DIFFERENCE_MINUEND_PLACES=632, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=632, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1711, PETRI_PLACES=637, PETRI_TRANSITIONS=637} [2022-11-20 11:48:40,944 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 51 predicate places. [2022-11-20 11:48:40,944 INFO L495 AbstractCegarLoop]: Abstraction has has 637 places, 637 transitions, 1711 flow [2022-11-20 11:48:40,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 583.1666666666666) internal successors, (3499), 6 states have internal predecessors, (3499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:40,945 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:40,945 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:40,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 11:48:40,946 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:40,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:40,946 INFO L85 PathProgramCache]: Analyzing trace with hash -967195565, now seen corresponding path program 1 times [2022-11-20 11:48:40,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:40,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508173936] [2022-11-20 11:48:40,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:40,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:41,052 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:48:41,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:41,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508173936] [2022-11-20 11:48:41,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508173936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:41,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:41,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:48:41,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630908928] [2022-11-20 11:48:41,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:41,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:48:41,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:41,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:48:41,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:48:41,056 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 602 out of 659 [2022-11-20 11:48:41,057 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 637 places, 637 transitions, 1711 flow. Second operand has 3 states, 3 states have (on average 605.0) internal successors, (1815), 3 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:41,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:41,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 602 of 659 [2022-11-20 11:48:41,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:42,873 INFO L130 PetriNetUnfolder]: 262/7035 cut-off events. [2022-11-20 11:48:42,873 INFO L131 PetriNetUnfolder]: For 109/116 co-relation queries the response was YES. [2022-11-20 11:48:42,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8272 conditions, 7035 events. 262/7035 cut-off events. For 109/116 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 70353 event pairs, 21 based on Foata normal form. 0/6187 useless extension candidates. Maximal degree in co-relation 8121. Up to 171 conditions per place. [2022-11-20 11:48:42,933 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 44 selfloop transitions, 4 changer transitions 0/657 dead transitions. [2022-11-20 11:48:42,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 657 transitions, 1849 flow [2022-11-20 11:48:42,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:48:42,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:48:42,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1858 transitions. [2022-11-20 11:48:42,935 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.939807789580172 [2022-11-20 11:48:42,935 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1858 transitions. [2022-11-20 11:48:42,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1858 transitions. [2022-11-20 11:48:42,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:42,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1858 transitions. [2022-11-20 11:48:42,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 619.3333333333334) internal successors, (1858), 3 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:42,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:42,938 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:42,938 INFO L175 Difference]: Start difference. First operand has 637 places, 637 transitions, 1711 flow. Second operand 3 states and 1858 transitions. [2022-11-20 11:48:42,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 657 transitions, 1849 flow [2022-11-20 11:48:42,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 635 places, 657 transitions, 1840 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:48:42,958 INFO L231 Difference]: Finished difference. Result has 636 places, 638 transitions, 1726 flow [2022-11-20 11:48:42,959 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1702, PETRI_DIFFERENCE_MINUEND_PLACES=633, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=633, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1726, PETRI_PLACES=636, PETRI_TRANSITIONS=638} [2022-11-20 11:48:42,959 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 50 predicate places. [2022-11-20 11:48:42,959 INFO L495 AbstractCegarLoop]: Abstraction has has 636 places, 638 transitions, 1726 flow [2022-11-20 11:48:42,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 605.0) internal successors, (1815), 3 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:42,960 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:42,960 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:42,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 11:48:42,961 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:42,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:42,962 INFO L85 PathProgramCache]: Analyzing trace with hash -984105754, now seen corresponding path program 1 times [2022-11-20 11:48:42,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:42,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205750132] [2022-11-20 11:48:42,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:42,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:43,187 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:48:43,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:43,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205750132] [2022-11-20 11:48:43,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205750132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:43,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:43,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:48:43,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349858409] [2022-11-20 11:48:43,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:43,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:48:43,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:43,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:48:43,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:48:43,193 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 541 out of 659 [2022-11-20 11:48:43,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 636 places, 638 transitions, 1726 flow. Second operand has 6 states, 6 states have (on average 545.1666666666666) internal successors, (3271), 6 states have internal predecessors, (3271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:43,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:43,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 541 of 659 [2022-11-20 11:48:43,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:44,182 INFO L130 PetriNetUnfolder]: 239/1861 cut-off events. [2022-11-20 11:48:44,183 INFO L131 PetriNetUnfolder]: For 225/225 co-relation queries the response was YES. [2022-11-20 11:48:44,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3247 conditions, 1861 events. 239/1861 cut-off events. For 225/225 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 12236 event pairs, 100 based on Foata normal form. 2/1756 useless extension candidates. Maximal degree in co-relation 3071. Up to 305 conditions per place. [2022-11-20 11:48:44,226 INFO L137 encePairwiseOnDemand]: 638/659 looper letters, 103 selfloop transitions, 21 changer transitions 0/669 dead transitions. [2022-11-20 11:48:44,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 641 places, 669 transitions, 2086 flow [2022-11-20 11:48:44,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:48:44,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:48:44,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3903 transitions. [2022-11-20 11:48:44,231 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8460871450249295 [2022-11-20 11:48:44,231 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3903 transitions. [2022-11-20 11:48:44,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3903 transitions. [2022-11-20 11:48:44,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:44,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3903 transitions. [2022-11-20 11:48:44,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 557.5714285714286) internal successors, (3903), 7 states have internal predecessors, (3903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:44,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:44,239 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:44,240 INFO L175 Difference]: Start difference. First operand has 636 places, 638 transitions, 1726 flow. Second operand 7 states and 3903 transitions. [2022-11-20 11:48:44,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 641 places, 669 transitions, 2086 flow [2022-11-20 11:48:44,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 639 places, 669 transitions, 2080 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:48:44,259 INFO L231 Difference]: Finished difference. Result has 644 places, 649 transitions, 1856 flow [2022-11-20 11:48:44,260 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1716, PETRI_DIFFERENCE_MINUEND_PLACES=633, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=616, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1856, PETRI_PLACES=644, PETRI_TRANSITIONS=649} [2022-11-20 11:48:44,261 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 58 predicate places. [2022-11-20 11:48:44,261 INFO L495 AbstractCegarLoop]: Abstraction has has 644 places, 649 transitions, 1856 flow [2022-11-20 11:48:44,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 545.1666666666666) internal successors, (3271), 6 states have internal predecessors, (3271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:44,262 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:44,262 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:44,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-20 11:48:44,263 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:44,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:44,263 INFO L85 PathProgramCache]: Analyzing trace with hash -56355688, now seen corresponding path program 1 times [2022-11-20 11:48:44,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:44,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072969842] [2022-11-20 11:48:44,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:44,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:44,496 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:48:44,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:44,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072969842] [2022-11-20 11:48:44,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072969842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:44,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:44,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:48:44,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233298109] [2022-11-20 11:48:44,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:44,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:48:44,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:44,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:48:44,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:48:44,501 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-20 11:48:44,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 644 places, 649 transitions, 1856 flow. Second operand has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:44,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:44,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-20 11:48:44,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:45,989 INFO L130 PetriNetUnfolder]: 944/4687 cut-off events. [2022-11-20 11:48:45,989 INFO L131 PetriNetUnfolder]: For 1111/1122 co-relation queries the response was YES. [2022-11-20 11:48:46,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7522 conditions, 4687 events. 944/4687 cut-off events. For 1111/1122 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 52878 event pairs, 241 based on Foata normal form. 0/3690 useless extension candidates. Maximal degree in co-relation 7194. Up to 836 conditions per place. [2022-11-20 11:48:46,043 INFO L137 encePairwiseOnDemand]: 646/659 looper letters, 57 selfloop transitions, 12 changer transitions 0/664 dead transitions. [2022-11-20 11:48:46,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 653 places, 664 transitions, 2030 flow [2022-11-20 11:48:46,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:48:46,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:48:46,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5780 transitions. [2022-11-20 11:48:46,050 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8770864946889226 [2022-11-20 11:48:46,050 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5780 transitions. [2022-11-20 11:48:46,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5780 transitions. [2022-11-20 11:48:46,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:46,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5780 transitions. [2022-11-20 11:48:46,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 578.0) internal successors, (5780), 10 states have internal predecessors, (5780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:46,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:46,067 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:46,067 INFO L175 Difference]: Start difference. First operand has 644 places, 649 transitions, 1856 flow. Second operand 10 states and 5780 transitions. [2022-11-20 11:48:46,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 653 places, 664 transitions, 2030 flow [2022-11-20 11:48:46,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 653 places, 664 transitions, 2030 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:48:46,086 INFO L231 Difference]: Finished difference. Result has 655 places, 650 transitions, 1892 flow [2022-11-20 11:48:46,087 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1856, PETRI_DIFFERENCE_MINUEND_PLACES=644, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=637, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1892, PETRI_PLACES=655, PETRI_TRANSITIONS=650} [2022-11-20 11:48:46,087 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 69 predicate places. [2022-11-20 11:48:46,088 INFO L495 AbstractCegarLoop]: Abstraction has has 655 places, 650 transitions, 1892 flow [2022-11-20 11:48:46,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:46,089 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:46,089 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:46,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-20 11:48:46,089 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:46,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:46,090 INFO L85 PathProgramCache]: Analyzing trace with hash -739074504, now seen corresponding path program 1 times [2022-11-20 11:48:46,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:46,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928515468] [2022-11-20 11:48:46,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:46,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:46,166 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:48:46,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:46,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928515468] [2022-11-20 11:48:46,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928515468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:46,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:46,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:48:46,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243309414] [2022-11-20 11:48:46,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:46,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:48:46,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:46,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:48:46,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:48:46,170 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 620 out of 659 [2022-11-20 11:48:46,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 655 places, 650 transitions, 1892 flow. Second operand has 3 states, 3 states have (on average 621.6666666666666) internal successors, (1865), 3 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:46,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:46,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 620 of 659 [2022-11-20 11:48:46,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:47,173 INFO L130 PetriNetUnfolder]: 208/3549 cut-off events. [2022-11-20 11:48:47,173 INFO L131 PetriNetUnfolder]: For 251/262 co-relation queries the response was YES. [2022-11-20 11:48:47,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4542 conditions, 3549 events. 208/3549 cut-off events. For 251/262 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 26652 event pairs, 55 based on Foata normal form. 0/3124 useless extension candidates. Maximal degree in co-relation 4436. Up to 152 conditions per place. [2022-11-20 11:48:47,231 INFO L137 encePairwiseOnDemand]: 655/659 looper letters, 10 selfloop transitions, 3 changer transitions 0/653 dead transitions. [2022-11-20 11:48:47,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 657 places, 653 transitions, 1925 flow [2022-11-20 11:48:47,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:48:47,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:48:47,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1874 transitions. [2022-11-20 11:48:47,234 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9479008598887203 [2022-11-20 11:48:47,234 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1874 transitions. [2022-11-20 11:48:47,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1874 transitions. [2022-11-20 11:48:47,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:47,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1874 transitions. [2022-11-20 11:48:47,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 624.6666666666666) internal successors, (1874), 3 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:47,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:47,240 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:47,240 INFO L175 Difference]: Start difference. First operand has 655 places, 650 transitions, 1892 flow. Second operand 3 states and 1874 transitions. [2022-11-20 11:48:47,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 657 places, 653 transitions, 1925 flow [2022-11-20 11:48:47,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 653 places, 653 transitions, 1911 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-20 11:48:47,258 INFO L231 Difference]: Finished difference. Result has 655 places, 652 transitions, 1900 flow [2022-11-20 11:48:47,259 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1878, PETRI_DIFFERENCE_MINUEND_PLACES=651, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1900, PETRI_PLACES=655, PETRI_TRANSITIONS=652} [2022-11-20 11:48:47,260 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 69 predicate places. [2022-11-20 11:48:47,260 INFO L495 AbstractCegarLoop]: Abstraction has has 655 places, 652 transitions, 1900 flow [2022-11-20 11:48:47,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 621.6666666666666) internal successors, (1865), 3 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:47,261 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:47,261 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:47,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-20 11:48:47,261 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:47,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:47,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1747024327, now seen corresponding path program 1 times [2022-11-20 11:48:47,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:47,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382430232] [2022-11-20 11:48:47,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:47,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:47,534 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:48:47,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:47,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382430232] [2022-11-20 11:48:47,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382430232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:47,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:47,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:48:47,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216482211] [2022-11-20 11:48:47,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:47,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:48:47,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:47,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:48:47,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:48:47,540 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-20 11:48:47,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 655 places, 652 transitions, 1900 flow. Second operand has 8 states, 8 states have (on average 573.25) internal successors, (4586), 8 states have internal predecessors, (4586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:47,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:47,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-20 11:48:47,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:49,021 INFO L130 PetriNetUnfolder]: 824/4549 cut-off events. [2022-11-20 11:48:49,021 INFO L131 PetriNetUnfolder]: For 1072/1083 co-relation queries the response was YES. [2022-11-20 11:48:49,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7377 conditions, 4549 events. 824/4549 cut-off events. For 1072/1083 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 50625 event pairs, 253 based on Foata normal form. 0/3686 useless extension candidates. Maximal degree in co-relation 7233. Up to 726 conditions per place. [2022-11-20 11:48:49,088 INFO L137 encePairwiseOnDemand]: 645/659 looper letters, 59 selfloop transitions, 13 changer transitions 0/669 dead transitions. [2022-11-20 11:48:49,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 669 transitions, 2091 flow [2022-11-20 11:48:49,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:48:49,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:48:49,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5782 transitions. [2022-11-20 11:48:49,094 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8773899848254931 [2022-11-20 11:48:49,094 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5782 transitions. [2022-11-20 11:48:49,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5782 transitions. [2022-11-20 11:48:49,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:49,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5782 transitions. [2022-11-20 11:48:49,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 578.2) internal successors, (5782), 10 states have internal predecessors, (5782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:49,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:49,111 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:49,112 INFO L175 Difference]: Start difference. First operand has 655 places, 652 transitions, 1900 flow. Second operand 10 states and 5782 transitions. [2022-11-20 11:48:49,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 664 places, 669 transitions, 2091 flow [2022-11-20 11:48:49,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 662 places, 669 transitions, 2085 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:48:49,132 INFO L231 Difference]: Finished difference. Result has 664 places, 653 transitions, 1932 flow [2022-11-20 11:48:49,133 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1894, PETRI_DIFFERENCE_MINUEND_PLACES=653, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=639, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1932, PETRI_PLACES=664, PETRI_TRANSITIONS=653} [2022-11-20 11:48:49,134 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 78 predicate places. [2022-11-20 11:48:49,134 INFO L495 AbstractCegarLoop]: Abstraction has has 664 places, 653 transitions, 1932 flow [2022-11-20 11:48:49,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.25) internal successors, (4586), 8 states have internal predecessors, (4586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:49,135 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:49,135 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:49,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-20 11:48:49,136 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:49,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:49,136 INFO L85 PathProgramCache]: Analyzing trace with hash -13339361, now seen corresponding path program 1 times [2022-11-20 11:48:49,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:49,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039445374] [2022-11-20 11:48:49,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:49,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:49,391 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:48:49,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:49,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039445374] [2022-11-20 11:48:49,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039445374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:49,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:49,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:48:49,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019649826] [2022-11-20 11:48:49,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:49,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:48:49,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:49,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:48:49,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:48:49,397 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-20 11:48:49,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 653 transitions, 1932 flow. Second operand has 8 states, 8 states have (on average 573.0) internal successors, (4584), 8 states have internal predecessors, (4584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:49,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:49,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-20 11:48:49,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:50,466 INFO L130 PetriNetUnfolder]: 265/2666 cut-off events. [2022-11-20 11:48:50,466 INFO L131 PetriNetUnfolder]: For 469/471 co-relation queries the response was YES. [2022-11-20 11:48:50,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4508 conditions, 2666 events. 265/2666 cut-off events. For 469/471 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 22830 event pairs, 36 based on Foata normal form. 12/2531 useless extension candidates. Maximal degree in co-relation 4283. Up to 188 conditions per place. [2022-11-20 11:48:50,503 INFO L137 encePairwiseOnDemand]: 646/659 looper letters, 57 selfloop transitions, 13 changer transitions 0/665 dead transitions. [2022-11-20 11:48:50,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 672 places, 665 transitions, 2092 flow [2022-11-20 11:48:50,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:48:50,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:48:50,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5778 transitions. [2022-11-20 11:48:50,508 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.876783004552352 [2022-11-20 11:48:50,508 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5778 transitions. [2022-11-20 11:48:50,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5778 transitions. [2022-11-20 11:48:50,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:50,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5778 transitions. [2022-11-20 11:48:50,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 577.8) internal successors, (5778), 10 states have internal predecessors, (5778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:50,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:50,525 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:50,525 INFO L175 Difference]: Start difference. First operand has 664 places, 653 transitions, 1932 flow. Second operand 10 states and 5778 transitions. [2022-11-20 11:48:50,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 672 places, 665 transitions, 2092 flow [2022-11-20 11:48:50,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 667 places, 665 transitions, 2073 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 11:48:50,545 INFO L231 Difference]: Finished difference. Result has 667 places, 651 transitions, 1923 flow [2022-11-20 11:48:50,546 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1897, PETRI_DIFFERENCE_MINUEND_PLACES=658, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=638, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1923, PETRI_PLACES=667, PETRI_TRANSITIONS=651} [2022-11-20 11:48:50,546 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 81 predicate places. [2022-11-20 11:48:50,547 INFO L495 AbstractCegarLoop]: Abstraction has has 667 places, 651 transitions, 1923 flow [2022-11-20 11:48:50,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.0) internal successors, (4584), 8 states have internal predecessors, (4584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:50,548 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:50,548 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:50,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-20 11:48:50,548 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:50,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:50,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1581886081, now seen corresponding path program 1 times [2022-11-20 11:48:50,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:50,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395199441] [2022-11-20 11:48:50,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:50,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:50,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:50,663 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:48:50,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:50,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395199441] [2022-11-20 11:48:50,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395199441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:50,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:50,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:48:50,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689951331] [2022-11-20 11:48:50,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:50,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:48:50,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:50,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:48:50,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:48:50,667 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 602 out of 659 [2022-11-20 11:48:50,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 667 places, 651 transitions, 1923 flow. Second operand has 3 states, 3 states have (on average 605.3333333333334) internal successors, (1816), 3 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:50,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:50,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 602 of 659 [2022-11-20 11:48:50,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:52,711 INFO L130 PetriNetUnfolder]: 643/6183 cut-off events. [2022-11-20 11:48:52,712 INFO L131 PetriNetUnfolder]: For 586/597 co-relation queries the response was YES. [2022-11-20 11:48:52,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8411 conditions, 6183 events. 643/6183 cut-off events. For 586/597 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 67001 event pairs, 176 based on Foata normal form. 0/5157 useless extension candidates. Maximal degree in co-relation 8300. Up to 522 conditions per place. [2022-11-20 11:48:52,785 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 43 selfloop transitions, 4 changer transitions 0/670 dead transitions. [2022-11-20 11:48:52,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 669 places, 670 transitions, 2056 flow [2022-11-20 11:48:52,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:48:52,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:48:52,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1857 transitions. [2022-11-20 11:48:52,788 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9393019726858877 [2022-11-20 11:48:52,788 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1857 transitions. [2022-11-20 11:48:52,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1857 transitions. [2022-11-20 11:48:52,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:52,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1857 transitions. [2022-11-20 11:48:52,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 619.0) internal successors, (1857), 3 states have internal predecessors, (1857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:52,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:52,793 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:52,793 INFO L175 Difference]: Start difference. First operand has 667 places, 651 transitions, 1923 flow. Second operand 3 states and 1857 transitions. [2022-11-20 11:48:52,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 669 places, 670 transitions, 2056 flow [2022-11-20 11:48:52,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 662 places, 670 transitions, 2029 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-11-20 11:48:52,810 INFO L231 Difference]: Finished difference. Result has 663 places, 652 transitions, 1920 flow [2022-11-20 11:48:52,811 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1896, PETRI_DIFFERENCE_MINUEND_PLACES=660, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1920, PETRI_PLACES=663, PETRI_TRANSITIONS=652} [2022-11-20 11:48:52,812 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 77 predicate places. [2022-11-20 11:48:52,812 INFO L495 AbstractCegarLoop]: Abstraction has has 663 places, 652 transitions, 1920 flow [2022-11-20 11:48:52,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 605.3333333333334) internal successors, (1816), 3 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:52,813 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:52,813 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:52,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-20 11:48:52,814 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:52,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:52,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1068175457, now seen corresponding path program 1 times [2022-11-20 11:48:52,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:52,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633798587] [2022-11-20 11:48:52,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:52,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:53,058 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:48:53,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:53,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633798587] [2022-11-20 11:48:53,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633798587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:53,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:53,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:48:53,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688833095] [2022-11-20 11:48:53,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:53,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:48:53,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:53,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:48:53,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:48:53,066 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-20 11:48:53,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 652 transitions, 1920 flow. Second operand has 6 states, 6 states have (on average 583.3333333333334) internal successors, (3500), 6 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:53,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:53,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-20 11:48:53,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:55,284 INFO L130 PetriNetUnfolder]: 1081/6839 cut-off events. [2022-11-20 11:48:55,284 INFO L131 PetriNetUnfolder]: For 1352/1363 co-relation queries the response was YES. [2022-11-20 11:48:55,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10825 conditions, 6839 events. 1081/6839 cut-off events. For 1352/1363 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 81469 event pairs, 301 based on Foata normal form. 0/5627 useless extension candidates. Maximal degree in co-relation 10489. Up to 1350 conditions per place. [2022-11-20 11:48:55,401 INFO L137 encePairwiseOnDemand]: 653/659 looper letters, 42 selfloop transitions, 5 changer transitions 0/655 dead transitions. [2022-11-20 11:48:55,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 667 places, 655 transitions, 2022 flow [2022-11-20 11:48:55,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:48:55,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:48:55,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3532 transitions. [2022-11-20 11:48:55,405 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8932726353060192 [2022-11-20 11:48:55,405 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3532 transitions. [2022-11-20 11:48:55,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3532 transitions. [2022-11-20 11:48:55,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:55,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3532 transitions. [2022-11-20 11:48:55,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 588.6666666666666) internal successors, (3532), 6 states have internal predecessors, (3532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:55,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:55,411 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:55,411 INFO L175 Difference]: Start difference. First operand has 663 places, 652 transitions, 1920 flow. Second operand 6 states and 3532 transitions. [2022-11-20 11:48:55,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 667 places, 655 transitions, 2022 flow [2022-11-20 11:48:55,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 655 transitions, 2018 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:48:55,427 INFO L231 Difference]: Finished difference. Result has 666 places, 651 transitions, 1924 flow [2022-11-20 11:48:55,427 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1914, PETRI_DIFFERENCE_MINUEND_PLACES=661, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=646, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1924, PETRI_PLACES=666, PETRI_TRANSITIONS=651} [2022-11-20 11:48:55,428 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 80 predicate places. [2022-11-20 11:48:55,428 INFO L495 AbstractCegarLoop]: Abstraction has has 666 places, 651 transitions, 1924 flow [2022-11-20 11:48:55,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 583.3333333333334) internal successors, (3500), 6 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:55,429 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:55,429 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:55,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-20 11:48:55,430 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:55,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:55,431 INFO L85 PathProgramCache]: Analyzing trace with hash 332279198, now seen corresponding path program 1 times [2022-11-20 11:48:55,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:55,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519765005] [2022-11-20 11:48:55,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:55,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:55,658 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:48:55,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:55,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519765005] [2022-11-20 11:48:55,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519765005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:55,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:55,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:48:55,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043837357] [2022-11-20 11:48:55,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:55,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:48:55,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:55,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:48:55,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:48:55,663 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 541 out of 659 [2022-11-20 11:48:55,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 666 places, 651 transitions, 1924 flow. Second operand has 6 states, 6 states have (on average 545.1666666666666) internal successors, (3271), 6 states have internal predecessors, (3271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:55,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:55,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 541 of 659 [2022-11-20 11:48:55,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:48:59,079 INFO L130 PetriNetUnfolder]: 2449/9889 cut-off events. [2022-11-20 11:48:59,079 INFO L131 PetriNetUnfolder]: For 2696/2707 co-relation queries the response was YES. [2022-11-20 11:48:59,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16371 conditions, 9889 events. 2449/9889 cut-off events. For 2696/2707 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 130728 event pairs, 1265 based on Foata normal form. 12/7252 useless extension candidates. Maximal degree in co-relation 16038. Up to 2659 conditions per place. [2022-11-20 11:48:59,433 INFO L137 encePairwiseOnDemand]: 639/659 looper letters, 81 selfloop transitions, 18 changer transitions 1/666 dead transitions. [2022-11-20 11:48:59,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 671 places, 666 transitions, 2158 flow [2022-11-20 11:48:59,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:48:59,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:48:59,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3888 transitions. [2022-11-20 11:48:59,436 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.842835464990245 [2022-11-20 11:48:59,436 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3888 transitions. [2022-11-20 11:48:59,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3888 transitions. [2022-11-20 11:48:59,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:48:59,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3888 transitions. [2022-11-20 11:48:59,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 555.4285714285714) internal successors, (3888), 7 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:59,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:59,444 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:59,444 INFO L175 Difference]: Start difference. First operand has 666 places, 651 transitions, 1924 flow. Second operand 7 states and 3888 transitions. [2022-11-20 11:48:59,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 671 places, 666 transitions, 2158 flow [2022-11-20 11:48:59,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 666 transitions, 2147 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:48:59,464 INFO L231 Difference]: Finished difference. Result has 671 places, 659 transitions, 2012 flow [2022-11-20 11:48:59,465 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1909, PETRI_DIFFERENCE_MINUEND_PLACES=660, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=632, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2012, PETRI_PLACES=671, PETRI_TRANSITIONS=659} [2022-11-20 11:48:59,466 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 85 predicate places. [2022-11-20 11:48:59,466 INFO L495 AbstractCegarLoop]: Abstraction has has 671 places, 659 transitions, 2012 flow [2022-11-20 11:48:59,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 545.1666666666666) internal successors, (3271), 6 states have internal predecessors, (3271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:59,467 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:48:59,467 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:59,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-20 11:48:59,468 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:48:59,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:59,468 INFO L85 PathProgramCache]: Analyzing trace with hash -413518395, now seen corresponding path program 1 times [2022-11-20 11:48:59,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:59,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338979808] [2022-11-20 11:48:59,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:59,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:59,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:59,769 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:48:59,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:59,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338979808] [2022-11-20 11:48:59,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338979808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:59,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:59,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:48:59,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599285119] [2022-11-20 11:48:59,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:59,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:48:59,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:59,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:48:59,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:48:59,775 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-20 11:48:59,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 671 places, 659 transitions, 2012 flow. Second operand has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:48:59,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:48:59,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-20 11:48:59,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:49:01,670 INFO L130 PetriNetUnfolder]: 352/3644 cut-off events. [2022-11-20 11:49:01,670 INFO L131 PetriNetUnfolder]: For 563/565 co-relation queries the response was YES. [2022-11-20 11:49:01,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6248 conditions, 3644 events. 352/3644 cut-off events. For 563/565 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 33614 event pairs, 55 based on Foata normal form. 16/3431 useless extension candidates. Maximal degree in co-relation 5910. Up to 240 conditions per place. [2022-11-20 11:49:01,721 INFO L137 encePairwiseOnDemand]: 646/659 looper letters, 58 selfloop transitions, 13 changer transitions 0/674 dead transitions. [2022-11-20 11:49:01,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 679 places, 674 transitions, 2196 flow [2022-11-20 11:49:01,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:49:01,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:49:01,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5779 transitions. [2022-11-20 11:49:01,726 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8769347496206373 [2022-11-20 11:49:01,726 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5779 transitions. [2022-11-20 11:49:01,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5779 transitions. [2022-11-20 11:49:01,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:49:01,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5779 transitions. [2022-11-20 11:49:01,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 577.9) internal successors, (5779), 10 states have internal predecessors, (5779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:01,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:01,737 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:01,737 INFO L175 Difference]: Start difference. First operand has 671 places, 659 transitions, 2012 flow. Second operand 10 states and 5779 transitions. [2022-11-20 11:49:01,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 679 places, 674 transitions, 2196 flow [2022-11-20 11:49:01,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 678 places, 674 transitions, 2192 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:49:01,753 INFO L231 Difference]: Finished difference. Result has 678 places, 658 transitions, 2030 flow [2022-11-20 11:49:01,753 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2004, PETRI_DIFFERENCE_MINUEND_PLACES=669, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=645, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2030, PETRI_PLACES=678, PETRI_TRANSITIONS=658} [2022-11-20 11:49:01,754 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 92 predicate places. [2022-11-20 11:49:01,754 INFO L495 AbstractCegarLoop]: Abstraction has has 678 places, 658 transitions, 2030 flow [2022-11-20 11:49:01,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:01,755 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:49:01,756 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:01,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-20 11:49:01,756 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:49:01,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:01,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1435324967, now seen corresponding path program 1 times [2022-11-20 11:49:01,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:01,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778262824] [2022-11-20 11:49:01,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:01,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:01,999 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:49:01,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:02,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778262824] [2022-11-20 11:49:02,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778262824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:02,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:49:02,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:49:02,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775619878] [2022-11-20 11:49:02,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:02,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:49:02,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:02,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:49:02,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:49:02,005 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 541 out of 659 [2022-11-20 11:49:02,007 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 678 places, 658 transitions, 2030 flow. Second operand has 6 states, 6 states have (on average 545.3333333333334) internal successors, (3272), 6 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:02,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:49:02,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 541 of 659 [2022-11-20 11:49:02,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:49:05,473 INFO L130 PetriNetUnfolder]: 2317/9321 cut-off events. [2022-11-20 11:49:05,473 INFO L131 PetriNetUnfolder]: For 3125/3136 co-relation queries the response was YES. [2022-11-20 11:49:05,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16767 conditions, 9321 events. 2317/9321 cut-off events. For 3125/3136 co-relation queries the response was YES. Maximal size of possible extension queue 1124. Compared 123738 event pairs, 1100 based on Foata normal form. 12/7129 useless extension candidates. Maximal degree in co-relation 16431. Up to 2314 conditions per place. [2022-11-20 11:49:05,584 INFO L137 encePairwiseOnDemand]: 638/659 looper letters, 101 selfloop transitions, 21 changer transitions 1/688 dead transitions. [2022-11-20 11:49:05,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 683 places, 688 transitions, 2385 flow [2022-11-20 11:49:05,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:49:05,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:49:05,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3902 transitions. [2022-11-20 11:49:05,715 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8458703663559506 [2022-11-20 11:49:05,716 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3902 transitions. [2022-11-20 11:49:05,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3902 transitions. [2022-11-20 11:49:05,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:49:05,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3902 transitions. [2022-11-20 11:49:05,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 557.4285714285714) internal successors, (3902), 7 states have internal predecessors, (3902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:05,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:05,725 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:05,726 INFO L175 Difference]: Start difference. First operand has 678 places, 658 transitions, 2030 flow. Second operand 7 states and 3902 transitions. [2022-11-20 11:49:05,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 683 places, 688 transitions, 2385 flow [2022-11-20 11:49:05,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 675 places, 688 transitions, 2356 flow, removed 1 selfloop flow, removed 8 redundant places. [2022-11-20 11:49:05,769 INFO L231 Difference]: Finished difference. Result has 680 places, 669 transitions, 2137 flow [2022-11-20 11:49:05,769 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1997, PETRI_DIFFERENCE_MINUEND_PLACES=669, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=636, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2137, PETRI_PLACES=680, PETRI_TRANSITIONS=669} [2022-11-20 11:49:05,770 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 94 predicate places. [2022-11-20 11:49:05,770 INFO L495 AbstractCegarLoop]: Abstraction has has 680 places, 669 transitions, 2137 flow [2022-11-20 11:49:05,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 545.3333333333334) internal successors, (3272), 6 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:05,770 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:49:05,770 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:05,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-20 11:49:05,771 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:49:05,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:05,771 INFO L85 PathProgramCache]: Analyzing trace with hash 110761515, now seen corresponding path program 1 times [2022-11-20 11:49:05,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:05,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836546471] [2022-11-20 11:49:05,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:05,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:06,045 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:49:06,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:06,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836546471] [2022-11-20 11:49:06,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836546471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:06,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:49:06,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:49:06,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673257455] [2022-11-20 11:49:06,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:06,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:49:06,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:06,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:49:06,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:49:06,051 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-20 11:49:06,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 680 places, 669 transitions, 2137 flow. Second operand has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:06,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:49:06,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-20 11:49:06,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:49:08,802 INFO L130 PetriNetUnfolder]: 1380/6993 cut-off events. [2022-11-20 11:49:08,802 INFO L131 PetriNetUnfolder]: For 2801/2812 co-relation queries the response was YES. [2022-11-20 11:49:08,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13887 conditions, 6993 events. 1380/6993 cut-off events. For 2801/2812 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 83596 event pairs, 223 based on Foata normal form. 56/6040 useless extension candidates. Maximal degree in co-relation 13547. Up to 1111 conditions per place. [2022-11-20 11:49:08,882 INFO L137 encePairwiseOnDemand]: 646/659 looper letters, 51 selfloop transitions, 13 changer transitions 4/679 dead transitions. [2022-11-20 11:49:08,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 688 places, 679 transitions, 2287 flow [2022-11-20 11:49:08,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:49:08,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:49:08,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5776 transitions. [2022-11-20 11:49:08,887 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8764795144157815 [2022-11-20 11:49:08,887 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5776 transitions. [2022-11-20 11:49:08,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5776 transitions. [2022-11-20 11:49:08,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:49:08,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5776 transitions. [2022-11-20 11:49:08,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 577.6) internal successors, (5776), 10 states have internal predecessors, (5776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:08,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:08,895 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:08,895 INFO L175 Difference]: Start difference. First operand has 680 places, 669 transitions, 2137 flow. Second operand 10 states and 5776 transitions. [2022-11-20 11:49:08,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 688 places, 679 transitions, 2287 flow [2022-11-20 11:49:08,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 687 places, 679 transitions, 2283 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:49:08,942 INFO L231 Difference]: Finished difference. Result has 687 places, 667 transitions, 2143 flow [2022-11-20 11:49:08,943 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2117, PETRI_DIFFERENCE_MINUEND_PLACES=678, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2143, PETRI_PLACES=687, PETRI_TRANSITIONS=667} [2022-11-20 11:49:08,944 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 101 predicate places. [2022-11-20 11:49:08,944 INFO L495 AbstractCegarLoop]: Abstraction has has 687 places, 667 transitions, 2143 flow [2022-11-20 11:49:08,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:08,945 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:49:08,945 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:08,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-20 11:49:08,945 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:49:08,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:08,946 INFO L85 PathProgramCache]: Analyzing trace with hash -861358298, now seen corresponding path program 1 times [2022-11-20 11:49:08,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:08,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106972685] [2022-11-20 11:49:08,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:08,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:09,197 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:49:09,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:09,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106972685] [2022-11-20 11:49:09,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106972685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:09,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:49:09,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:49:09,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258607376] [2022-11-20 11:49:09,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:09,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:49:09,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:09,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:49:09,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:49:09,203 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-20 11:49:09,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 667 transitions, 2143 flow. Second operand has 8 states, 8 states have (on average 573.25) internal successors, (4586), 8 states have internal predecessors, (4586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:09,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:49:09,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-20 11:49:09,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:49:11,808 INFO L130 PetriNetUnfolder]: 1172/6729 cut-off events. [2022-11-20 11:49:11,809 INFO L131 PetriNetUnfolder]: For 2683/2694 co-relation queries the response was YES. [2022-11-20 11:49:11,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13446 conditions, 6729 events. 1172/6729 cut-off events. For 2683/2694 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 79849 event pairs, 223 based on Foata normal form. 56/5921 useless extension candidates. Maximal degree in co-relation 13103. Up to 935 conditions per place. [2022-11-20 11:49:11,904 INFO L137 encePairwiseOnDemand]: 646/659 looper letters, 44 selfloop transitions, 13 changer transitions 12/680 dead transitions. [2022-11-20 11:49:11,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 695 places, 680 transitions, 2319 flow [2022-11-20 11:49:11,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:49:11,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:49:11,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5777 transitions. [2022-11-20 11:49:11,912 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8766312594840667 [2022-11-20 11:49:11,912 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5777 transitions. [2022-11-20 11:49:11,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5777 transitions. [2022-11-20 11:49:11,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:49:11,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5777 transitions. [2022-11-20 11:49:11,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 577.7) internal successors, (5777), 10 states have internal predecessors, (5777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:11,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:11,927 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:11,928 INFO L175 Difference]: Start difference. First operand has 687 places, 667 transitions, 2143 flow. Second operand 10 states and 5777 transitions. [2022-11-20 11:49:11,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 695 places, 680 transitions, 2319 flow [2022-11-20 11:49:11,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 687 places, 680 transitions, 2286 flow, removed 1 selfloop flow, removed 8 redundant places. [2022-11-20 11:49:11,985 INFO L231 Difference]: Finished difference. Result has 687 places, 666 transitions, 2134 flow [2022-11-20 11:49:11,985 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2108, PETRI_DIFFERENCE_MINUEND_PLACES=678, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2134, PETRI_PLACES=687, PETRI_TRANSITIONS=666} [2022-11-20 11:49:11,986 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 101 predicate places. [2022-11-20 11:49:11,986 INFO L495 AbstractCegarLoop]: Abstraction has has 687 places, 666 transitions, 2134 flow [2022-11-20 11:49:11,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.25) internal successors, (4586), 8 states have internal predecessors, (4586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:11,987 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:49:11,987 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:11,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-20 11:49:11,988 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:49:11,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:11,988 INFO L85 PathProgramCache]: Analyzing trace with hash -409589875, now seen corresponding path program 1 times [2022-11-20 11:49:11,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:11,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863565232] [2022-11-20 11:49:11,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:11,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:12,330 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:49:12,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:12,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863565232] [2022-11-20 11:49:12,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863565232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:12,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:49:12,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:49:12,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135192803] [2022-11-20 11:49:12,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:12,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:49:12,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:12,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:49:12,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:49:12,337 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-20 11:49:12,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 666 transitions, 2134 flow. Second operand has 4 states, 4 states have (on average 599.25) internal successors, (2397), 4 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:12,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:49:12,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-20 11:49:12,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:49:15,302 INFO L130 PetriNetUnfolder]: 406/10260 cut-off events. [2022-11-20 11:49:15,303 INFO L131 PetriNetUnfolder]: For 1430/1437 co-relation queries the response was YES. [2022-11-20 11:49:15,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16337 conditions, 10260 events. 406/10260 cut-off events. For 1430/1437 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 104386 event pairs, 26 based on Foata normal form. 0/9788 useless extension candidates. Maximal degree in co-relation 16098. Up to 595 conditions per place. [2022-11-20 11:49:15,441 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 52 selfloop transitions, 6 changer transitions 0/690 dead transitions. [2022-11-20 11:49:15,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 691 places, 690 transitions, 2302 flow [2022-11-20 11:49:15,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:49:15,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:49:15,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3045 transitions. [2022-11-20 11:49:15,444 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9241274658573596 [2022-11-20 11:49:15,444 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3045 transitions. [2022-11-20 11:49:15,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3045 transitions. [2022-11-20 11:49:15,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:49:15,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3045 transitions. [2022-11-20 11:49:15,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 609.0) internal successors, (3045), 5 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:15,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:15,450 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:15,450 INFO L175 Difference]: Start difference. First operand has 687 places, 666 transitions, 2134 flow. Second operand 5 states and 3045 transitions. [2022-11-20 11:49:15,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 691 places, 690 transitions, 2302 flow [2022-11-20 11:49:15,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 684 places, 690 transitions, 2275 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-11-20 11:49:15,539 INFO L231 Difference]: Finished difference. Result has 687 places, 668 transitions, 2139 flow [2022-11-20 11:49:15,540 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2107, PETRI_DIFFERENCE_MINUEND_PLACES=680, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2139, PETRI_PLACES=687, PETRI_TRANSITIONS=668} [2022-11-20 11:49:15,540 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 101 predicate places. [2022-11-20 11:49:15,541 INFO L495 AbstractCegarLoop]: Abstraction has has 687 places, 668 transitions, 2139 flow [2022-11-20 11:49:15,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 599.25) internal successors, (2397), 4 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:15,541 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:49:15,542 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:15,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-20 11:49:15,542 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:49:15,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:15,543 INFO L85 PathProgramCache]: Analyzing trace with hash 946322841, now seen corresponding path program 1 times [2022-11-20 11:49:15,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:15,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988145813] [2022-11-20 11:49:15,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:15,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:15,684 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:49:15,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:15,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988145813] [2022-11-20 11:49:15,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988145813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:15,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:49:15,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:49:15,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193406233] [2022-11-20 11:49:15,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:15,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:49:15,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:15,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:49:15,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:49:15,689 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-20 11:49:15,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 668 transitions, 2139 flow. Second operand has 4 states, 4 states have (on average 599.5) internal successors, (2398), 4 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:15,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:49:15,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-20 11:49:15,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:49:18,210 INFO L130 PetriNetUnfolder]: 731/6093 cut-off events. [2022-11-20 11:49:18,210 INFO L131 PetriNetUnfolder]: For 1096/1107 co-relation queries the response was YES. [2022-11-20 11:49:18,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10090 conditions, 6093 events. 731/6093 cut-off events. For 1096/1107 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 67809 event pairs, 165 based on Foata normal form. 0/5396 useless extension candidates. Maximal degree in co-relation 9861. Up to 637 conditions per place. [2022-11-20 11:49:18,290 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 51 selfloop transitions, 6 changer transitions 0/691 dead transitions. [2022-11-20 11:49:18,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 691 places, 691 transitions, 2302 flow [2022-11-20 11:49:18,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:49:18,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:49:18,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3044 transitions. [2022-11-20 11:49:18,293 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9238239757207891 [2022-11-20 11:49:18,293 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3044 transitions. [2022-11-20 11:49:18,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3044 transitions. [2022-11-20 11:49:18,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:49:18,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3044 transitions. [2022-11-20 11:49:18,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 608.8) internal successors, (3044), 5 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:18,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:18,297 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:18,298 INFO L175 Difference]: Start difference. First operand has 687 places, 668 transitions, 2139 flow. Second operand 5 states and 3044 transitions. [2022-11-20 11:49:18,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 691 places, 691 transitions, 2302 flow [2022-11-20 11:49:18,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 689 places, 691 transitions, 2294 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:49:18,325 INFO L231 Difference]: Finished difference. Result has 692 places, 670 transitions, 2163 flow [2022-11-20 11:49:18,326 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2131, PETRI_DIFFERENCE_MINUEND_PLACES=685, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=662, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2163, PETRI_PLACES=692, PETRI_TRANSITIONS=670} [2022-11-20 11:49:18,326 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 106 predicate places. [2022-11-20 11:49:18,326 INFO L495 AbstractCegarLoop]: Abstraction has has 692 places, 670 transitions, 2163 flow [2022-11-20 11:49:18,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 599.5) internal successors, (2398), 4 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:18,327 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:49:18,328 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:18,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-20 11:49:18,328 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:49:18,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:18,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1233792276, now seen corresponding path program 1 times [2022-11-20 11:49:18,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:18,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421827773] [2022-11-20 11:49:18,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:18,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:18,520 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:49:18,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:18,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421827773] [2022-11-20 11:49:18,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421827773] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:49:18,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953322017] [2022-11-20 11:49:18,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:18,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:49:18,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:49:18,523 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:49:18,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:49:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:18,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:49:18,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:49:18,862 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:49:18,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:49:18,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953322017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:18,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:49:18,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-20 11:49:18,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949314192] [2022-11-20 11:49:18,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:18,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:49:18,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:18,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:49:18,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:49:18,866 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-20 11:49:18,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 692 places, 670 transitions, 2163 flow. Second operand has 4 states, 4 states have (on average 601.25) internal successors, (2405), 4 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:18,868 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:49:18,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-20 11:49:18,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:49:19,887 INFO L130 PetriNetUnfolder]: 101/1766 cut-off events. [2022-11-20 11:49:19,887 INFO L131 PetriNetUnfolder]: For 254/258 co-relation queries the response was YES. [2022-11-20 11:49:19,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2957 conditions, 1766 events. 101/1766 cut-off events. For 254/258 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 10508 event pairs, 0 based on Foata normal form. 2/1707 useless extension candidates. Maximal degree in co-relation 2725. Up to 129 conditions per place. [2022-11-20 11:49:19,957 INFO L137 encePairwiseOnDemand]: 653/659 looper letters, 32 selfloop transitions, 6 changer transitions 0/672 dead transitions. [2022-11-20 11:49:19,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 672 transitions, 2244 flow [2022-11-20 11:49:19,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:49:19,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:49:19,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2424 transitions. [2022-11-20 11:49:19,959 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9195751138088012 [2022-11-20 11:49:19,959 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2424 transitions. [2022-11-20 11:49:19,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2424 transitions. [2022-11-20 11:49:19,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:49:19,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2424 transitions. [2022-11-20 11:49:19,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 606.0) internal successors, (2424), 4 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:19,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:19,963 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:19,963 INFO L175 Difference]: Start difference. First operand has 692 places, 670 transitions, 2163 flow. Second operand 4 states and 2424 transitions. [2022-11-20 11:49:19,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 672 transitions, 2244 flow [2022-11-20 11:49:19,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 692 places, 672 transitions, 2236 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:49:19,982 INFO L231 Difference]: Finished difference. Result has 692 places, 669 transitions, 2163 flow [2022-11-20 11:49:19,983 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2151, PETRI_DIFFERENCE_MINUEND_PLACES=689, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2163, PETRI_PLACES=692, PETRI_TRANSITIONS=669} [2022-11-20 11:49:19,983 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 106 predicate places. [2022-11-20 11:49:19,983 INFO L495 AbstractCegarLoop]: Abstraction has has 692 places, 669 transitions, 2163 flow [2022-11-20 11:49:19,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 601.25) internal successors, (2405), 4 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:19,984 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:49:19,985 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:19,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:49:20,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-20 11:49:20,194 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:49:20,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:20,195 INFO L85 PathProgramCache]: Analyzing trace with hash 407146877, now seen corresponding path program 1 times [2022-11-20 11:49:20,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:20,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404530512] [2022-11-20 11:49:20,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:20,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:20,370 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:49:20,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:20,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404530512] [2022-11-20 11:49:20,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404530512] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:49:20,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424399055] [2022-11-20 11:49:20,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:20,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:49:20,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:49:20,373 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:49:20,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:49:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:20,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:49:20,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:49:20,791 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:49:20,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:49:20,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424399055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:20,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:49:20,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-20 11:49:20,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796081351] [2022-11-20 11:49:20,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:20,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:49:20,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:20,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:49:20,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:49:20,796 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-20 11:49:20,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 692 places, 669 transitions, 2163 flow. Second operand has 5 states, 5 states have (on average 600.6) internal successors, (3003), 5 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:20,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:49:20,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-20 11:49:20,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:49:21,859 INFO L130 PetriNetUnfolder]: 98/1757 cut-off events. [2022-11-20 11:49:21,859 INFO L131 PetriNetUnfolder]: For 258/262 co-relation queries the response was YES. [2022-11-20 11:49:21,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2938 conditions, 1757 events. 98/1757 cut-off events. For 258/262 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 10463 event pairs, 0 based on Foata normal form. 6/1702 useless extension candidates. Maximal degree in co-relation 2706. Up to 59 conditions per place. [2022-11-20 11:49:21,927 INFO L137 encePairwiseOnDemand]: 650/659 looper letters, 48 selfloop transitions, 8 changer transitions 0/690 dead transitions. [2022-11-20 11:49:21,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 690 transitions, 2319 flow [2022-11-20 11:49:21,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:49:21,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:49:21,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3640 transitions. [2022-11-20 11:49:21,930 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9205867475973698 [2022-11-20 11:49:21,930 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3640 transitions. [2022-11-20 11:49:21,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3640 transitions. [2022-11-20 11:49:21,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:49:21,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3640 transitions. [2022-11-20 11:49:21,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 606.6666666666666) internal successors, (3640), 6 states have internal predecessors, (3640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:21,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:21,937 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:21,937 INFO L175 Difference]: Start difference. First operand has 692 places, 669 transitions, 2163 flow. Second operand 6 states and 3640 transitions. [2022-11-20 11:49:21,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 690 transitions, 2319 flow [2022-11-20 11:49:21,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 691 places, 690 transitions, 2305 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:49:21,949 INFO L231 Difference]: Finished difference. Result has 691 places, 666 transitions, 2155 flow [2022-11-20 11:49:21,949 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2139, PETRI_DIFFERENCE_MINUEND_PLACES=686, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=658, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2155, PETRI_PLACES=691, PETRI_TRANSITIONS=666} [2022-11-20 11:49:21,950 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 105 predicate places. [2022-11-20 11:49:21,950 INFO L495 AbstractCegarLoop]: Abstraction has has 691 places, 666 transitions, 2155 flow [2022-11-20 11:49:21,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 600.6) internal successors, (3003), 5 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:21,951 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:49:21,951 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:21,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:49:22,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-11-20 11:49:22,152 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:49:22,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:22,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1300132845, now seen corresponding path program 1 times [2022-11-20 11:49:22,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:22,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649679692] [2022-11-20 11:49:22,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:22,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:22,324 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:49:22,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:22,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649679692] [2022-11-20 11:49:22,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649679692] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:49:22,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800896974] [2022-11-20 11:49:22,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:22,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:49:22,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:49:22,330 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:49:22,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:49:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:22,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:49:22,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:49:22,676 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:49:22,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:49:22,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800896974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:22,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:49:22,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-20 11:49:22,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714534579] [2022-11-20 11:49:22,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:22,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:49:22,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:22,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:49:22,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:49:22,680 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-20 11:49:22,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 691 places, 666 transitions, 2155 flow. Second operand has 4 states, 4 states have (on average 601.5) internal successors, (2406), 4 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:22,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:49:22,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-20 11:49:22,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:49:24,809 INFO L130 PetriNetUnfolder]: 780/6518 cut-off events. [2022-11-20 11:49:24,809 INFO L131 PetriNetUnfolder]: For 1268/1280 co-relation queries the response was YES. [2022-11-20 11:49:24,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10897 conditions, 6518 events. 780/6518 cut-off events. For 1268/1280 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 73296 event pairs, 444 based on Foata normal form. 13/5805 useless extension candidates. Maximal degree in co-relation 10665. Up to 995 conditions per place. [2022-11-20 11:49:24,890 INFO L137 encePairwiseOnDemand]: 653/659 looper letters, 31 selfloop transitions, 6 changer transitions 0/667 dead transitions. [2022-11-20 11:49:24,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 693 places, 667 transitions, 2231 flow [2022-11-20 11:49:24,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:49:24,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:49:24,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2423 transitions. [2022-11-20 11:49:24,892 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.919195751138088 [2022-11-20 11:49:24,892 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2423 transitions. [2022-11-20 11:49:24,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2423 transitions. [2022-11-20 11:49:24,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:49:24,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2423 transitions. [2022-11-20 11:49:24,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 605.75) internal successors, (2423), 4 states have internal predecessors, (2423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:24,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:24,898 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:24,898 INFO L175 Difference]: Start difference. First operand has 691 places, 666 transitions, 2155 flow. Second operand 4 states and 2423 transitions. [2022-11-20 11:49:24,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 693 places, 667 transitions, 2231 flow [2022-11-20 11:49:24,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 688 places, 667 transitions, 2212 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 11:49:24,928 INFO L231 Difference]: Finished difference. Result has 688 places, 665 transitions, 2144 flow [2022-11-20 11:49:24,929 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2132, PETRI_DIFFERENCE_MINUEND_PLACES=685, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=665, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2144, PETRI_PLACES=688, PETRI_TRANSITIONS=665} [2022-11-20 11:49:24,929 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 102 predicate places. [2022-11-20 11:49:24,929 INFO L495 AbstractCegarLoop]: Abstraction has has 688 places, 665 transitions, 2144 flow [2022-11-20 11:49:24,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 601.5) internal successors, (2406), 4 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:24,930 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:49:24,931 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:24,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:49:25,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-11-20 11:49:25,144 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:49:25,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:25,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1649414537, now seen corresponding path program 1 times [2022-11-20 11:49:25,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:25,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276801027] [2022-11-20 11:49:25,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:25,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:25,310 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:49:25,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:25,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276801027] [2022-11-20 11:49:25,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276801027] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:49:25,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308960078] [2022-11-20 11:49:25,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:25,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:49:25,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:49:25,313 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:49:25,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 11:49:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:25,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:49:25,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:49:25,749 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:49:25,749 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:49:25,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308960078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:25,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:49:25,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-20 11:49:25,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039346253] [2022-11-20 11:49:25,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:25,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:49:25,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:25,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:49:25,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:49:25,754 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-20 11:49:25,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 688 places, 665 transitions, 2144 flow. Second operand has 5 states, 5 states have (on average 600.8) internal successors, (3004), 5 states have internal predecessors, (3004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:25,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:49:25,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-20 11:49:25,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:49:28,449 INFO L130 PetriNetUnfolder]: 744/6441 cut-off events. [2022-11-20 11:49:28,449 INFO L131 PetriNetUnfolder]: For 1263/1275 co-relation queries the response was YES. [2022-11-20 11:49:28,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10763 conditions, 6441 events. 744/6441 cut-off events. For 1263/1275 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 71405 event pairs, 180 based on Foata normal form. 39/5795 useless extension candidates. Maximal degree in co-relation 10532. Up to 516 conditions per place. [2022-11-20 11:49:28,526 INFO L137 encePairwiseOnDemand]: 650/659 looper letters, 46 selfloop transitions, 8 changer transitions 0/684 dead transitions. [2022-11-20 11:49:28,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 690 places, 684 transitions, 2290 flow [2022-11-20 11:49:28,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:49:28,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:49:28,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3638 transitions. [2022-11-20 11:49:28,530 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9200809307030855 [2022-11-20 11:49:28,530 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3638 transitions. [2022-11-20 11:49:28,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3638 transitions. [2022-11-20 11:49:28,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:49:28,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3638 transitions. [2022-11-20 11:49:28,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 606.3333333333334) internal successors, (3638), 6 states have internal predecessors, (3638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:28,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:28,537 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:28,537 INFO L175 Difference]: Start difference. First operand has 688 places, 665 transitions, 2144 flow. Second operand 6 states and 3638 transitions. [2022-11-20 11:49:28,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 690 places, 684 transitions, 2290 flow [2022-11-20 11:49:28,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 687 places, 684 transitions, 2276 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:49:28,569 INFO L231 Difference]: Finished difference. Result has 687 places, 662 transitions, 2136 flow [2022-11-20 11:49:28,570 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2120, PETRI_DIFFERENCE_MINUEND_PLACES=682, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2136, PETRI_PLACES=687, PETRI_TRANSITIONS=662} [2022-11-20 11:49:28,571 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 101 predicate places. [2022-11-20 11:49:28,571 INFO L495 AbstractCegarLoop]: Abstraction has has 687 places, 662 transitions, 2136 flow [2022-11-20 11:49:28,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 600.8) internal successors, (3004), 5 states have internal predecessors, (3004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:28,572 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:49:28,572 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:28,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:49:28,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-11-20 11:49:28,780 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:49:28,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:28,781 INFO L85 PathProgramCache]: Analyzing trace with hash -987728038, now seen corresponding path program 1 times [2022-11-20 11:49:28,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:28,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837141248] [2022-11-20 11:49:28,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:28,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:28,867 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-20 11:49:28,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:28,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837141248] [2022-11-20 11:49:28,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837141248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:28,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:49:28,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:49:28,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833403001] [2022-11-20 11:49:28,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:28,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:49:28,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:28,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:49:28,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:49:28,872 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 620 out of 659 [2022-11-20 11:49:28,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 662 transitions, 2136 flow. Second operand has 3 states, 3 states have (on average 622.3333333333334) internal successors, (1867), 3 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:28,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:49:28,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 620 of 659 [2022-11-20 11:49:28,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:49:30,049 INFO L130 PetriNetUnfolder]: 82/2108 cut-off events. [2022-11-20 11:49:30,050 INFO L131 PetriNetUnfolder]: For 289/297 co-relation queries the response was YES. [2022-11-20 11:49:30,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3379 conditions, 2108 events. 82/2108 cut-off events. For 289/297 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 12390 event pairs, 10 based on Foata normal form. 0/2032 useless extension candidates. Maximal degree in co-relation 3136. Up to 70 conditions per place. [2022-11-20 11:49:30,101 INFO L137 encePairwiseOnDemand]: 655/659 looper letters, 10 selfloop transitions, 3 changer transitions 0/665 dead transitions. [2022-11-20 11:49:30,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 689 places, 665 transitions, 2169 flow [2022-11-20 11:49:30,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:49:30,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:49:30,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1874 transitions. [2022-11-20 11:49:30,104 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9479008598887203 [2022-11-20 11:49:30,104 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1874 transitions. [2022-11-20 11:49:30,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1874 transitions. [2022-11-20 11:49:30,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:49:30,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1874 transitions. [2022-11-20 11:49:30,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 624.6666666666666) internal successors, (1874), 3 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:30,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:30,110 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:30,110 INFO L175 Difference]: Start difference. First operand has 687 places, 662 transitions, 2136 flow. Second operand 3 states and 1874 transitions. [2022-11-20 11:49:30,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 689 places, 665 transitions, 2169 flow [2022-11-20 11:49:30,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 684 places, 665 transitions, 2150 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 11:49:30,123 INFO L231 Difference]: Finished difference. Result has 686 places, 664 transitions, 2139 flow [2022-11-20 11:49:30,123 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2117, PETRI_DIFFERENCE_MINUEND_PLACES=682, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2139, PETRI_PLACES=686, PETRI_TRANSITIONS=664} [2022-11-20 11:49:30,123 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 100 predicate places. [2022-11-20 11:49:30,124 INFO L495 AbstractCegarLoop]: Abstraction has has 686 places, 664 transitions, 2139 flow [2022-11-20 11:49:30,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 622.3333333333334) internal successors, (1867), 3 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:30,124 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:49:30,124 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:30,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-20 11:49:30,125 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:49:30,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:30,126 INFO L85 PathProgramCache]: Analyzing trace with hash -19769475, now seen corresponding path program 1 times [2022-11-20 11:49:30,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:30,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72569267] [2022-11-20 11:49:30,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:30,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:30,295 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:49:30,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:30,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72569267] [2022-11-20 11:49:30,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72569267] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:49:30,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973934346] [2022-11-20 11:49:30,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:30,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:49:30,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:49:30,298 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:49:30,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 11:49:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:30,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:49:30,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:49:30,727 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:49:30,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:49:30,905 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:49:30,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973934346] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:49:30,906 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:49:30,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-11-20 11:49:30,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012887727] [2022-11-20 11:49:30,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:49:30,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:49:30,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:30,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:49:30,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:49:30,912 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-20 11:49:30,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 686 places, 664 transitions, 2139 flow. Second operand has 10 states, 10 states have (on average 600.9) internal successors, (6009), 10 states have internal predecessors, (6009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:30,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:49:30,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-20 11:49:30,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:49:32,779 INFO L130 PetriNetUnfolder]: 188/3171 cut-off events. [2022-11-20 11:49:32,779 INFO L131 PetriNetUnfolder]: For 405/409 co-relation queries the response was YES. [2022-11-20 11:49:32,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5275 conditions, 3171 events. 188/3171 cut-off events. For 405/409 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 18536 event pairs, 20 based on Foata normal form. 6/3075 useless extension candidates. Maximal degree in co-relation 5032. Up to 107 conditions per place. [2022-11-20 11:49:32,887 INFO L137 encePairwiseOnDemand]: 650/659 looper letters, 89 selfloop transitions, 11 changer transitions 0/732 dead transitions. [2022-11-20 11:49:32,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 732 transitions, 2496 flow [2022-11-20 11:49:32,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:49:32,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:49:32,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 5476 transitions. [2022-11-20 11:49:32,892 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9232844377002192 [2022-11-20 11:49:32,892 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 5476 transitions. [2022-11-20 11:49:32,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 5476 transitions. [2022-11-20 11:49:32,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:49:32,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 5476 transitions. [2022-11-20 11:49:32,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 608.4444444444445) internal successors, (5476), 9 states have internal predecessors, (5476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:32,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 659.0) internal successors, (6590), 10 states have internal predecessors, (6590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:32,901 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 659.0) internal successors, (6590), 10 states have internal predecessors, (6590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:32,901 INFO L175 Difference]: Start difference. First operand has 686 places, 664 transitions, 2139 flow. Second operand 9 states and 5476 transitions. [2022-11-20 11:49:32,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 732 transitions, 2496 flow [2022-11-20 11:49:32,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 692 places, 732 transitions, 2490 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:49:32,924 INFO L231 Difference]: Finished difference. Result has 697 places, 669 transitions, 2201 flow [2022-11-20 11:49:32,925 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2133, PETRI_DIFFERENCE_MINUEND_PLACES=684, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2201, PETRI_PLACES=697, PETRI_TRANSITIONS=669} [2022-11-20 11:49:32,926 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 111 predicate places. [2022-11-20 11:49:32,926 INFO L495 AbstractCegarLoop]: Abstraction has has 697 places, 669 transitions, 2201 flow [2022-11-20 11:49:32,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 600.9) internal successors, (6009), 10 states have internal predecessors, (6009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:32,927 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:49:32,928 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:32,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 11:49:33,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-11-20 11:49:33,134 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:49:33,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:33,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1017127802, now seen corresponding path program 1 times [2022-11-20 11:49:33,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:33,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447187707] [2022-11-20 11:49:33,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:33,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:33,221 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-20 11:49:33,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:33,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447187707] [2022-11-20 11:49:33,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447187707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:33,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:49:33,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:49:33,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381795716] [2022-11-20 11:49:33,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:33,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:49:33,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:33,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:49:33,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:49:33,226 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 620 out of 659 [2022-11-20 11:49:33,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 697 places, 669 transitions, 2201 flow. Second operand has 3 states, 3 states have (on average 622.6666666666666) internal successors, (1868), 3 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:33,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:49:33,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 620 of 659 [2022-11-20 11:49:33,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:49:35,791 INFO L130 PetriNetUnfolder]: 574/6758 cut-off events. [2022-11-20 11:49:35,791 INFO L131 PetriNetUnfolder]: For 920/940 co-relation queries the response was YES. [2022-11-20 11:49:35,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10619 conditions, 6758 events. 574/6758 cut-off events. For 920/940 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 67994 event pairs, 200 based on Foata normal form. 0/6209 useless extension candidates. Maximal degree in co-relation 10384. Up to 475 conditions per place. [2022-11-20 11:49:35,930 INFO L137 encePairwiseOnDemand]: 655/659 looper letters, 10 selfloop transitions, 3 changer transitions 0/672 dead transitions. [2022-11-20 11:49:35,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 699 places, 672 transitions, 2234 flow [2022-11-20 11:49:35,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:49:35,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:49:35,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1874 transitions. [2022-11-20 11:49:35,932 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9479008598887203 [2022-11-20 11:49:35,932 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1874 transitions. [2022-11-20 11:49:35,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1874 transitions. [2022-11-20 11:49:35,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:49:35,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1874 transitions. [2022-11-20 11:49:35,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 624.6666666666666) internal successors, (1874), 3 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:35,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:35,935 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:35,936 INFO L175 Difference]: Start difference. First operand has 697 places, 669 transitions, 2201 flow. Second operand 3 states and 1874 transitions. [2022-11-20 11:49:35,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 699 places, 672 transitions, 2234 flow [2022-11-20 11:49:35,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 696 places, 672 transitions, 2220 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-11-20 11:49:35,964 INFO L231 Difference]: Finished difference. Result has 698 places, 671 transitions, 2209 flow [2022-11-20 11:49:35,964 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2187, PETRI_DIFFERENCE_MINUEND_PLACES=694, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2209, PETRI_PLACES=698, PETRI_TRANSITIONS=671} [2022-11-20 11:49:35,964 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 112 predicate places. [2022-11-20 11:49:35,964 INFO L495 AbstractCegarLoop]: Abstraction has has 698 places, 671 transitions, 2209 flow [2022-11-20 11:49:35,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 622.6666666666666) internal successors, (1868), 3 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:35,965 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:49:35,965 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:35,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-20 11:49:35,965 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:49:35,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:35,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1791835977, now seen corresponding path program 1 times [2022-11-20 11:49:35,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:35,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932878666] [2022-11-20 11:49:35,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:35,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:36,136 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:49:36,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:36,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932878666] [2022-11-20 11:49:36,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932878666] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:49:36,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214832914] [2022-11-20 11:49:36,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:36,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:49:36,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:49:36,139 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:49:36,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 11:49:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:36,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:49:36,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:49:36,608 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:49:36,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:49:36,796 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:49:36,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214832914] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:49:36,797 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:49:36,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-11-20 11:49:36,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588021489] [2022-11-20 11:49:36,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:49:36,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:49:36,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:36,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:49:36,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:49:36,803 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-20 11:49:36,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 698 places, 671 transitions, 2209 flow. Second operand has 10 states, 10 states have (on average 601.0) internal successors, (6010), 10 states have internal predecessors, (6010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:36,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:49:36,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-20 11:49:36,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:49:45,885 INFO L130 PetriNetUnfolder]: 2390/19951 cut-off events. [2022-11-20 11:49:45,885 INFO L131 PetriNetUnfolder]: For 3786/3806 co-relation queries the response was YES. [2022-11-20 11:49:46,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33470 conditions, 19951 events. 2390/19951 cut-off events. For 3786/3806 co-relation queries the response was YES. Maximal size of possible extension queue 976. Compared 266949 event pairs, 400 based on Foata normal form. 63/17890 useless extension candidates. Maximal degree in co-relation 33233. Up to 1680 conditions per place. [2022-11-20 11:49:46,283 INFO L137 encePairwiseOnDemand]: 650/659 looper letters, 86 selfloop transitions, 11 changer transitions 0/736 dead transitions. [2022-11-20 11:49:46,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 706 places, 736 transitions, 2551 flow [2022-11-20 11:49:46,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:49:46,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:49:46,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 5473 transitions. [2022-11-20 11:49:46,290 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9227786208059349 [2022-11-20 11:49:46,290 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 5473 transitions. [2022-11-20 11:49:46,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 5473 transitions. [2022-11-20 11:49:46,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:49:46,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 5473 transitions. [2022-11-20 11:49:46,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 608.1111111111111) internal successors, (5473), 9 states have internal predecessors, (5473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:46,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 659.0) internal successors, (6590), 10 states have internal predecessors, (6590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:46,298 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 659.0) internal successors, (6590), 10 states have internal predecessors, (6590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:46,298 INFO L175 Difference]: Start difference. First operand has 698 places, 671 transitions, 2209 flow. Second operand 9 states and 5473 transitions. [2022-11-20 11:49:46,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 706 places, 736 transitions, 2551 flow [2022-11-20 11:49:46,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 704 places, 736 transitions, 2545 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:49:46,485 INFO L231 Difference]: Finished difference. Result has 709 places, 676 transitions, 2271 flow [2022-11-20 11:49:46,485 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2203, PETRI_DIFFERENCE_MINUEND_PLACES=696, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=671, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2271, PETRI_PLACES=709, PETRI_TRANSITIONS=676} [2022-11-20 11:49:46,486 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 123 predicate places. [2022-11-20 11:49:46,486 INFO L495 AbstractCegarLoop]: Abstraction has has 709 places, 676 transitions, 2271 flow [2022-11-20 11:49:46,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 601.0) internal successors, (6010), 10 states have internal predecessors, (6010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:46,486 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:49:46,487 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:46,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 11:49:46,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:49:46,688 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-20 11:49:46,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:46,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1936825645, now seen corresponding path program 1 times [2022-11-20 11:49:46,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:46,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397484911] [2022-11-20 11:49:46,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:46,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:47,227 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:49:47,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:47,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397484911] [2022-11-20 11:49:47,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397484911] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:49:47,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842338048] [2022-11-20 11:49:47,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:47,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:49:47,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:49:47,230 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:49:47,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63944a81-eb32-448d-9560-6072c0591cf5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 11:49:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:47,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:49:47,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:49:47,786 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:49:47,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:49:48,109 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-20 11:49:48,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842338048] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:49:48,110 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:49:48,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-20 11:49:48,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951677778] [2022-11-20 11:49:48,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:49:48,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:49:48,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:48,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:49:48,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:49:48,119 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-20 11:49:48,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 709 places, 676 transitions, 2271 flow. Second operand has 16 states, 16 states have (on average 600.4375) internal successors, (9607), 16 states have internal predecessors, (9607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:49:48,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:49:48,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-20 11:49:48,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand