./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8 --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 98c397d7a260fe673f9e4655b5dca942c114f9b11115010a8eef60e068615ab1 --- 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-2329fc7 [2022-12-13 13:53:47,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:53:47,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:53:47,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:53:47,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:53:47,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:53:47,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:53:47,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:53:47,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:53:47,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:53:47,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:53:47,877 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:53:47,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:53:47,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:53:47,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:53:47,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:53:47,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:53:47,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:53:47,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:53:47,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:53:47,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:53:47,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:53:47,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:53:47,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:53:47,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:53:47,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:53:47,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:53:47,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:53:47,895 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:53:47,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:53:47,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:53:47,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:53:47,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:53:47,899 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:53:47,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:53:47,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:53:47,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:53:47,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:53:47,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:53:47,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:53:47,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:53:47,903 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 13:53:47,922 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:53:47,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:53:47,923 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:53:47,923 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:53:47,924 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:53:47,924 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:53:47,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:53:47,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:53:47,925 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:53:47,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:53:47,925 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:53:47,925 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 13:53:47,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:53:47,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:53:47,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:53:47,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:53:47,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:53:47,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:53:47,927 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 13:53:47,927 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:53:47,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:53:47,927 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:53:47,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:53:47,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:53:47,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:53:47,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:53:47,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:53:47,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:53:47,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:53:47,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:53:47,928 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:53:47,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:53:47,929 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:53:47,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:53:47,929 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:53:47,929 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:53:47,929 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:53:47,929 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98c397d7a260fe673f9e4655b5dca942c114f9b11115010a8eef60e068615ab1 [2022-12-13 13:53:48,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:53:48,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:53:48,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:53:48,147 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:53:48,148 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:53:48,149 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2022-12-13 13:53:50,707 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:53:50,860 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:53:50,861 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2022-12-13 13:53:50,866 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/data/29dbb3ae8/a08ee6c462ab4c899473f0b1290abeb8/FLAGed5813007 [2022-12-13 13:53:51,261 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/data/29dbb3ae8/a08ee6c462ab4c899473f0b1290abeb8 [2022-12-13 13:53:51,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:53:51,265 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:53:51,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:53:51,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:53:51,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:53:51,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:53:51" (1/1) ... [2022-12-13 13:53:51,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34ccf60c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:53:51, skipping insertion in model container [2022-12-13 13:53:51,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:53:51" (1/1) ... [2022-12-13 13:53:51,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:53:51,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:53:51,418 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_e36a7c08-3bba-4087-812b-65de316870f8/sv-benchmarks/c/weaver/chl-word-subst.wvr.c[3345,3358] [2022-12-13 13:53:51,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:53:51,430 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:53:51,450 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_e36a7c08-3bba-4087-812b-65de316870f8/sv-benchmarks/c/weaver/chl-word-subst.wvr.c[3345,3358] [2022-12-13 13:53:51,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:53:51,463 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:53:51,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:53:51 WrapperNode [2022-12-13 13:53:51,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:53:51,464 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:53:51,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:53:51,464 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:53:51,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:53:51" (1/1) ... [2022-12-13 13:53:51,476 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:53:51" (1/1) ... [2022-12-13 13:53:51,494 INFO L138 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 182 [2022-12-13 13:53:51,494 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:53:51,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:53:51,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:53:51,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:53:51,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:53:51" (1/1) ... [2022-12-13 13:53:51,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:53:51" (1/1) ... [2022-12-13 13:53:51,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:53:51" (1/1) ... [2022-12-13 13:53:51,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:53:51" (1/1) ... [2022-12-13 13:53:51,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:53:51" (1/1) ... [2022-12-13 13:53:51,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:53:51" (1/1) ... [2022-12-13 13:53:51,520 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:53:51" (1/1) ... [2022-12-13 13:53:51,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:53:51" (1/1) ... [2022-12-13 13:53:51,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:53:51,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:53:51,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:53:51,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:53:51,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:53:51" (1/1) ... [2022-12-13 13:53:51,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:53:51,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:53:51,549 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:53:51,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:53:51,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:53:51,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:53:51,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:53:51,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 13:53:51,576 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 13:53:51,576 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 13:53:51,576 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 13:53:51,576 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 13:53:51,576 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 13:53:51,577 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 13:53:51,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:53:51,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 13:53:51,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:53:51,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:53:51,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:53:51,578 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 13:53:51,672 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:53:51,674 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:53:52,009 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:53:52,021 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:53:52,021 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-13 13:53:52,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:53:52 BoogieIcfgContainer [2022-12-13 13:53:52,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:53:52,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:53:52,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:53:52,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:53:52,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:53:51" (1/3) ... [2022-12-13 13:53:52,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18796166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:53:52, skipping insertion in model container [2022-12-13 13:53:52,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:53:51" (2/3) ... [2022-12-13 13:53:52,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18796166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:53:52, skipping insertion in model container [2022-12-13 13:53:52,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:53:52" (3/3) ... [2022-12-13 13:53:52,033 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2022-12-13 13:53:52,041 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 13:53:52,051 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:53:52,052 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-12-13 13:53:52,052 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 13:53:52,132 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 13:53:52,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 326 places, 345 transitions, 714 flow [2022-12-13 13:53:52,266 INFO L130 PetriNetUnfolder]: 29/342 cut-off events. [2022-12-13 13:53:52,266 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 13:53:52,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 342 events. 29/342 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 547 event pairs, 0 based on Foata normal form. 0/295 useless extension candidates. Maximal degree in co-relation 269. Up to 3 conditions per place. [2022-12-13 13:53:52,273 INFO L82 GeneralOperation]: Start removeDead. Operand has 326 places, 345 transitions, 714 flow [2022-12-13 13:53:52,278 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 296 places, 313 transitions, 641 flow [2022-12-13 13:53:52,281 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 13:53:52,288 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 296 places, 313 transitions, 641 flow [2022-12-13 13:53:52,290 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 296 places, 313 transitions, 641 flow [2022-12-13 13:53:52,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 296 places, 313 transitions, 641 flow [2022-12-13 13:53:52,327 INFO L130 PetriNetUnfolder]: 27/313 cut-off events. [2022-12-13 13:53:52,327 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 13:53:52,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 313 events. 27/313 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 541 event pairs, 0 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 269. Up to 3 conditions per place. [2022-12-13 13:53:52,331 INFO L119 LiptonReduction]: Number of co-enabled transitions 11400 [2022-12-13 13:54:00,377 INFO L134 LiptonReduction]: Checked pairs total: 15573 [2022-12-13 13:54:00,377 INFO L136 LiptonReduction]: Total number of compositions: 338 [2022-12-13 13:54:00,390 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:54:00,395 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;@5a081457, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:54:00,395 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2022-12-13 13:54:00,397 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 13:54:00,397 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:54:00,397 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:54:00,398 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 13:54:00,398 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 13:54:00,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:54:00,403 INFO L85 PathProgramCache]: Analyzing trace with hash 41415, now seen corresponding path program 1 times [2022-12-13 13:54:00,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:54:00,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017357540] [2022-12-13 13:54:00,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:54:00,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:54:00,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:54:00,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:54:00,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:54:00,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017357540] [2022-12-13 13:54:00,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017357540] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:54:00,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:54:00,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:54:00,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567566982] [2022-12-13 13:54:00,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:54:00,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:54:00,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:54:00,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:54:00,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:54:00,673 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 683 [2022-12-13 13:54:00,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 57 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 315.6666666666667) internal successors, (947), 3 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:00,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:54:00,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 683 [2022-12-13 13:54:00,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:54:01,899 INFO L130 PetriNetUnfolder]: 12137/16403 cut-off events. [2022-12-13 13:54:01,899 INFO L131 PetriNetUnfolder]: For 708/708 co-relation queries the response was YES. [2022-12-13 13:54:01,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33511 conditions, 16403 events. 12137/16403 cut-off events. For 708/708 co-relation queries the response was YES. Maximal size of possible extension queue 837. Compared 83689 event pairs, 8860 based on Foata normal form. 0/8047 useless extension candidates. Maximal degree in co-relation 15562. Up to 8206 conditions per place. [2022-12-13 13:54:01,968 INFO L137 encePairwiseOnDemand]: 671/683 looper letters, 101 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2022-12-13 13:54:01,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 107 transitions, 458 flow [2022-12-13 13:54:01,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:54:01,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:54:01,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1058 transitions. [2022-12-13 13:54:01,982 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.51634943875061 [2022-12-13 13:54:01,983 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1058 transitions. [2022-12-13 13:54:01,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1058 transitions. [2022-12-13 13:54:01,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:54:01,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1058 transitions. [2022-12-13 13:54:01,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 352.6666666666667) internal successors, (1058), 3 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:02,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 683.0) internal successors, (2732), 4 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:02,001 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 683.0) internal successors, (2732), 4 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:02,003 INFO L175 Difference]: Start difference. First operand has 56 places, 57 transitions, 129 flow. Second operand 3 states and 1058 transitions. [2022-12-13 13:54:02,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 107 transitions, 458 flow [2022-12-13 13:54:02,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 107 transitions, 440 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 13:54:02,013 INFO L231 Difference]: Finished difference. Result has 55 places, 62 transitions, 176 flow [2022-12-13 13:54:02,014 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=683, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=55, PETRI_TRANSITIONS=62} [2022-12-13 13:54:02,016 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2022-12-13 13:54:02,016 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 62 transitions, 176 flow [2022-12-13 13:54:02,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 315.6666666666667) internal successors, (947), 3 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:02,017 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:54:02,017 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 13:54:02,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:54:02,018 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 13:54:02,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:54:02,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1285600, now seen corresponding path program 1 times [2022-12-13 13:54:02,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:54:02,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083723038] [2022-12-13 13:54:02,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:54:02,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:54:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:54:02,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:54:02,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:54:02,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083723038] [2022-12-13 13:54:02,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083723038] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:54:02,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:54:02,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:54:02,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688964818] [2022-12-13 13:54:02,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:54:02,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:54:02,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:54:02,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:54:02,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:54:02,113 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 683 [2022-12-13 13:54:02,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 62 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:02,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:54:02,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 683 [2022-12-13 13:54:02,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:54:03,078 INFO L130 PetriNetUnfolder]: 12137/16400 cut-off events. [2022-12-13 13:54:03,078 INFO L131 PetriNetUnfolder]: For 144/144 co-relation queries the response was YES. [2022-12-13 13:54:03,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33332 conditions, 16400 events. 12137/16400 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 837. Compared 83690 event pairs, 8860 based on Foata normal form. 0/8053 useless extension candidates. Maximal degree in co-relation 16646. Up to 16400 conditions per place. [2022-12-13 13:54:03,131 INFO L137 encePairwiseOnDemand]: 679/683 looper letters, 58 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2022-12-13 13:54:03,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 59 transitions, 282 flow [2022-12-13 13:54:03,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:54:03,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:54:03,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1002 transitions. [2022-12-13 13:54:03,135 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4890190336749634 [2022-12-13 13:54:03,135 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1002 transitions. [2022-12-13 13:54:03,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1002 transitions. [2022-12-13 13:54:03,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:54:03,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1002 transitions. [2022-12-13 13:54:03,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 334.0) internal successors, (1002), 3 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:03,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 683.0) internal successors, (2732), 4 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:03,140 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 683.0) internal successors, (2732), 4 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:03,140 INFO L175 Difference]: Start difference. First operand has 55 places, 62 transitions, 176 flow. Second operand 3 states and 1002 transitions. [2022-12-13 13:54:03,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 59 transitions, 282 flow [2022-12-13 13:54:03,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 59 transitions, 270 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:54:03,142 INFO L231 Difference]: Finished difference. Result has 52 places, 59 transitions, 154 flow [2022-12-13 13:54:03,142 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=683, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=52, PETRI_TRANSITIONS=59} [2022-12-13 13:54:03,142 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -4 predicate places. [2022-12-13 13:54:03,142 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 59 transitions, 154 flow [2022-12-13 13:54:03,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:03,143 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:54:03,143 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 13:54:03,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:54:03,143 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 13:54:03,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:54:03,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1285601, now seen corresponding path program 1 times [2022-12-13 13:54:03,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:54:03,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082608599] [2022-12-13 13:54:03,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:54:03,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:54:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:54:03,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:54:03,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:54:03,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082608599] [2022-12-13 13:54:03,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082608599] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:54:03,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725501007] [2022-12-13 13:54:03,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:54:03,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:54:03,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:54:03,205 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:54:03,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 13:54:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:54:03,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 13:54:03,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:54:03,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:54:03,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:54:03,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:54:03,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725501007] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:54:03,319 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:54:03,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 13:54:03,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337740076] [2022-12-13 13:54:03,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:54:03,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:54:03,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:54:03,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:54:03,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:54:03,392 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 683 [2022-12-13 13:54:03,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 59 transitions, 154 flow. Second operand has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:03,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:54:03,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 683 [2022-12-13 13:54:03,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:54:05,937 INFO L130 PetriNetUnfolder]: 30341/40994 cut-off events. [2022-12-13 13:54:05,937 INFO L131 PetriNetUnfolder]: For 360/360 co-relation queries the response was YES. [2022-12-13 13:54:05,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83292 conditions, 40994 events. 30341/40994 cut-off events. For 360/360 co-relation queries the response was YES. Maximal size of possible extension queue 1619. Compared 229122 event pairs, 22150 based on Foata normal form. 0/20121 useless extension candidates. Maximal degree in co-relation 83284. Up to 8204 conditions per place. [2022-12-13 13:54:06,086 INFO L137 encePairwiseOnDemand]: 674/683 looper letters, 233 selfloop transitions, 21 changer transitions 0/254 dead transitions. [2022-12-13 13:54:06,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 254 transitions, 1106 flow [2022-12-13 13:54:06,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:54:06,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 13:54:06,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2153 transitions. [2022-12-13 13:54:06,092 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.525378233284529 [2022-12-13 13:54:06,092 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2153 transitions. [2022-12-13 13:54:06,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2153 transitions. [2022-12-13 13:54:06,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:54:06,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2153 transitions. [2022-12-13 13:54:06,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 358.8333333333333) internal successors, (2153), 6 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:06,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 683.0) internal successors, (4781), 7 states have internal predecessors, (4781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:06,105 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 683.0) internal successors, (4781), 7 states have internal predecessors, (4781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:06,105 INFO L175 Difference]: Start difference. First operand has 52 places, 59 transitions, 154 flow. Second operand 6 states and 2153 transitions. [2022-12-13 13:54:06,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 254 transitions, 1106 flow [2022-12-13 13:54:06,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 254 transitions, 1105 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:54:06,109 INFO L231 Difference]: Finished difference. Result has 59 places, 74 transitions, 303 flow [2022-12-13 13:54:06,109 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=683, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=303, PETRI_PLACES=59, PETRI_TRANSITIONS=74} [2022-12-13 13:54:06,109 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2022-12-13 13:54:06,110 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 74 transitions, 303 flow [2022-12-13 13:54:06,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:06,111 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:54:06,111 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 13:54:06,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:54:06,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:54:06,312 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 13:54:06,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:54:06,313 INFO L85 PathProgramCache]: Analyzing trace with hash -353673208, now seen corresponding path program 2 times [2022-12-13 13:54:06,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:54:06,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117645816] [2022-12-13 13:54:06,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:54:06,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:54:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:54:06,429 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:54:06,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:54:06,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117645816] [2022-12-13 13:54:06,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117645816] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:54:06,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742444548] [2022-12-13 13:54:06,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:54:06,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:54:06,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:54:06,432 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:54:06,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 13:54:06,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 13:54:06,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:54:06,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 13:54:06,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:54:06,508 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 13:54:06,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:54:06,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742444548] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:54:06,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:54:06,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 13:54:06,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540699807] [2022-12-13 13:54:06,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:54:06,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:54:06,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:54:06,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:54:06,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:54:06,539 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 683 [2022-12-13 13:54:06,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 74 transitions, 303 flow. Second operand has 3 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:06,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:54:06,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 683 [2022-12-13 13:54:06,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:54:08,959 INFO L130 PetriNetUnfolder]: 30341/40993 cut-off events. [2022-12-13 13:54:08,960 INFO L131 PetriNetUnfolder]: For 365/365 co-relation queries the response was YES. [2022-12-13 13:54:08,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83337 conditions, 40993 events. 30341/40993 cut-off events. For 365/365 co-relation queries the response was YES. Maximal size of possible extension queue 1832. Compared 232768 event pairs, 22150 based on Foata normal form. 1/20130 useless extension candidates. Maximal degree in co-relation 83325. Up to 40988 conditions per place. [2022-12-13 13:54:09,109 INFO L137 encePairwiseOnDemand]: 680/683 looper letters, 67 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2022-12-13 13:54:09,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 73 transitions, 439 flow [2022-12-13 13:54:09,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:54:09,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:54:09,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1008 transitions. [2022-12-13 13:54:09,112 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49194729136163984 [2022-12-13 13:54:09,112 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1008 transitions. [2022-12-13 13:54:09,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1008 transitions. [2022-12-13 13:54:09,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:54:09,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1008 transitions. [2022-12-13 13:54:09,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 336.0) internal successors, (1008), 3 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:09,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 683.0) internal successors, (2732), 4 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:09,117 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 683.0) internal successors, (2732), 4 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:09,117 INFO L175 Difference]: Start difference. First operand has 59 places, 74 transitions, 303 flow. Second operand 3 states and 1008 transitions. [2022-12-13 13:54:09,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 73 transitions, 439 flow [2022-12-13 13:54:09,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 73 transitions, 409 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-12-13 13:54:09,120 INFO L231 Difference]: Finished difference. Result has 59 places, 73 transitions, 275 flow [2022-12-13 13:54:09,120 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=683, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=59, PETRI_TRANSITIONS=73} [2022-12-13 13:54:09,120 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2022-12-13 13:54:09,120 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 73 transitions, 275 flow [2022-12-13 13:54:09,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:09,121 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:54:09,121 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2022-12-13 13:54:09,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 13:54:09,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:54:09,322 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 13:54:09,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:54:09,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1268847905, now seen corresponding path program 1 times [2022-12-13 13:54:09,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:54:09,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418467196] [2022-12-13 13:54:09,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:54:09,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:54:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:54:09,407 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:54:09,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:54:09,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418467196] [2022-12-13 13:54:09,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418467196] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:54:09,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459806585] [2022-12-13 13:54:09,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:54:09,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:54:09,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:54:09,409 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:54:09,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 13:54:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:54:09,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 13:54:09,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:54:09,488 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:54:09,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:54:09,525 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:54:09,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459806585] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:54:09,526 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:54:09,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 13:54:09,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801186601] [2022-12-13 13:54:09,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:54:09,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 13:54:09,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:54:09,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 13:54:09,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 13:54:09,629 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 683 [2022-12-13 13:54:09,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 73 transitions, 275 flow. Second operand has 13 states, 13 states have (on average 316.15384615384613) internal successors, (4110), 13 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:09,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:54:09,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 683 [2022-12-13 13:54:09,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:54:15,641 INFO L130 PetriNetUnfolder]: 66749/90181 cut-off events. [2022-12-13 13:54:15,641 INFO L131 PetriNetUnfolder]: For 837/837 co-relation queries the response was YES. [2022-12-13 13:54:15,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183280 conditions, 90181 events. 66749/90181 cut-off events. For 837/837 co-relation queries the response was YES. Maximal size of possible extension queue 2270. Compared 535257 event pairs, 48730 based on Foata normal form. 12/44294 useless extension candidates. Maximal degree in co-relation 183267. Up to 9317 conditions per place. [2022-12-13 13:54:15,990 INFO L137 encePairwiseOnDemand]: 675/683 looper letters, 502 selfloop transitions, 51 changer transitions 0/553 dead transitions. [2022-12-13 13:54:15,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 553 transitions, 2521 flow [2022-12-13 13:54:15,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 13:54:15,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 13:54:15,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4345 transitions. [2022-12-13 13:54:15,998 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5301366520253782 [2022-12-13 13:54:15,998 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4345 transitions. [2022-12-13 13:54:15,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4345 transitions. [2022-12-13 13:54:16,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:54:16,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4345 transitions. [2022-12-13 13:54:16,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 362.0833333333333) internal successors, (4345), 12 states have internal predecessors, (4345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:16,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 683.0) internal successors, (8879), 13 states have internal predecessors, (8879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:16,017 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 683.0) internal successors, (8879), 13 states have internal predecessors, (8879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:16,017 INFO L175 Difference]: Start difference. First operand has 59 places, 73 transitions, 275 flow. Second operand 12 states and 4345 transitions. [2022-12-13 13:54:16,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 553 transitions, 2521 flow [2022-12-13 13:54:16,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 553 transitions, 2497 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:54:16,023 INFO L231 Difference]: Finished difference. Result has 74 places, 103 transitions, 611 flow [2022-12-13 13:54:16,024 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=683, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=611, PETRI_PLACES=74, PETRI_TRANSITIONS=103} [2022-12-13 13:54:16,024 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2022-12-13 13:54:16,024 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 103 transitions, 611 flow [2022-12-13 13:54:16,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 316.15384615384613) internal successors, (4110), 13 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:16,025 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:54:16,026 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:54:16,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 13:54:16,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:54:16,227 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 13:54:16,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:54:16,228 INFO L85 PathProgramCache]: Analyzing trace with hash 11781936, now seen corresponding path program 1 times [2022-12-13 13:54:16,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:54:16,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172561148] [2022-12-13 13:54:16,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:54:16,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:54:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:54:16,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:54:16,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:54:16,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172561148] [2022-12-13 13:54:16,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172561148] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:54:16,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:54:16,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:54:16,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095363481] [2022-12-13 13:54:16,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:54:16,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:54:16,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:54:16,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:54:16,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:54:16,447 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 683 [2022-12-13 13:54:16,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 103 transitions, 611 flow. Second operand has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:16,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:54:16,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 683 [2022-12-13 13:54:16,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:54:26,992 INFO L130 PetriNetUnfolder]: 124774/167711 cut-off events. [2022-12-13 13:54:26,992 INFO L131 PetriNetUnfolder]: For 1704/1704 co-relation queries the response was YES. [2022-12-13 13:54:27,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340846 conditions, 167711 events. 124774/167711 cut-off events. For 1704/1704 co-relation queries the response was YES. Maximal size of possible extension queue 4160. Compared 1063283 event pairs, 88814 based on Foata normal form. 0/83247 useless extension candidates. Maximal degree in co-relation 340827. Up to 84824 conditions per place. [2022-12-13 13:54:27,738 INFO L137 encePairwiseOnDemand]: 678/683 looper letters, 178 selfloop transitions, 4 changer transitions 0/182 dead transitions. [2022-12-13 13:54:27,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 182 transitions, 1394 flow [2022-12-13 13:54:27,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:54:27,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:54:27,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1341 transitions. [2022-12-13 13:54:27,742 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4908491947291362 [2022-12-13 13:54:27,742 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1341 transitions. [2022-12-13 13:54:27,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1341 transitions. [2022-12-13 13:54:27,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:54:27,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1341 transitions. [2022-12-13 13:54:27,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 335.25) internal successors, (1341), 4 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:27,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 683.0) internal successors, (3415), 5 states have internal predecessors, (3415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:27,747 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 683.0) internal successors, (3415), 5 states have internal predecessors, (3415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:27,748 INFO L175 Difference]: Start difference. First operand has 74 places, 103 transitions, 611 flow. Second operand 4 states and 1341 transitions. [2022-12-13 13:54:27,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 182 transitions, 1394 flow [2022-12-13 13:54:27,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 182 transitions, 1162 flow, removed 65 selfloop flow, removed 5 redundant places. [2022-12-13 13:54:27,752 INFO L231 Difference]: Finished difference. Result has 74 places, 104 transitions, 486 flow [2022-12-13 13:54:27,753 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=683, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=486, PETRI_PLACES=74, PETRI_TRANSITIONS=104} [2022-12-13 13:54:27,753 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2022-12-13 13:54:27,753 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 104 transitions, 486 flow [2022-12-13 13:54:27,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:27,754 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:54:27,754 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:54:27,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 13:54:27,754 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 13:54:27,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:54:27,754 INFO L85 PathProgramCache]: Analyzing trace with hash -132805656, now seen corresponding path program 1 times [2022-12-13 13:54:27,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:54:27,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420214684] [2022-12-13 13:54:27,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:54:27,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:54:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:54:27,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:54:27,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:54:27,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420214684] [2022-12-13 13:54:27,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420214684] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:54:27,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120562778] [2022-12-13 13:54:27,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:54:27,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:54:27,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:54:27,878 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:54:27,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 13:54:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:54:27,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 13:54:27,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:54:27,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:54:27,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:54:28,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:54:28,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120562778] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 13:54:28,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:54:28,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 2] total 8 [2022-12-13 13:54:28,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947055640] [2022-12-13 13:54:28,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:54:28,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:54:28,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:54:28,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:54:28,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-12-13 13:54:28,111 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 683 [2022-12-13 13:54:28,113 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 104 transitions, 486 flow. Second operand has 4 states, 4 states have (on average 301.25) internal successors, (1205), 4 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:28,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:54:28,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 683 [2022-12-13 13:54:28,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:54:37,761 INFO L130 PetriNetUnfolder]: 117481/158460 cut-off events. [2022-12-13 13:54:37,762 INFO L131 PetriNetUnfolder]: For 11386/11386 co-relation queries the response was YES. [2022-12-13 13:54:38,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323938 conditions, 158460 events. 117481/158460 cut-off events. For 11386/11386 co-relation queries the response was YES. Maximal size of possible extension queue 3972. Compared 1005897 event pairs, 84491 based on Foata normal form. 3916/86473 useless extension candidates. Maximal degree in co-relation 323917. Up to 158460 conditions per place. [2022-12-13 13:54:38,497 INFO L137 encePairwiseOnDemand]: 681/683 looper letters, 101 selfloop transitions, 1 changer transitions 0/102 dead transitions. [2022-12-13 13:54:38,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 102 transitions, 680 flow [2022-12-13 13:54:38,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:54:38,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:54:38,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 950 transitions. [2022-12-13 13:54:38,500 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46364080039043437 [2022-12-13 13:54:38,500 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 950 transitions. [2022-12-13 13:54:38,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 950 transitions. [2022-12-13 13:54:38,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:54:38,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 950 transitions. [2022-12-13 13:54:38,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 316.6666666666667) internal successors, (950), 3 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:38,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 683.0) internal successors, (2732), 4 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:38,505 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 683.0) internal successors, (2732), 4 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:38,505 INFO L175 Difference]: Start difference. First operand has 74 places, 104 transitions, 486 flow. Second operand 3 states and 950 transitions. [2022-12-13 13:54:38,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 102 transitions, 680 flow [2022-12-13 13:54:38,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 102 transitions, 672 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-13 13:54:38,509 INFO L231 Difference]: Finished difference. Result has 73 places, 102 transitions, 470 flow [2022-12-13 13:54:38,509 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=683, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=470, PETRI_PLACES=73, PETRI_TRANSITIONS=102} [2022-12-13 13:54:38,510 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2022-12-13 13:54:38,510 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 102 transitions, 470 flow [2022-12-13 13:54:38,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 301.25) internal successors, (1205), 4 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:38,510 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:54:38,510 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:54:38,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 13:54:38,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:54:38,712 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 13:54:38,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:54:38,713 INFO L85 PathProgramCache]: Analyzing trace with hash 11781655, now seen corresponding path program 1 times [2022-12-13 13:54:38,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:54:38,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932819630] [2022-12-13 13:54:38,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:54:38,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:54:38,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:54:38,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:54:38,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:54:38,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932819630] [2022-12-13 13:54:38,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932819630] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:54:38,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:54:38,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:54:38,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212520557] [2022-12-13 13:54:38,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:54:38,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:54:38,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:54:38,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:54:38,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:54:38,770 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 683 [2022-12-13 13:54:38,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 102 transitions, 470 flow. Second operand has 3 states, 3 states have (on average 324.6666666666667) internal successors, (974), 3 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:38,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:54:38,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 683 [2022-12-13 13:54:38,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:54:54,994 INFO L130 PetriNetUnfolder]: 198980/269109 cut-off events. [2022-12-13 13:54:54,994 INFO L131 PetriNetUnfolder]: For 3501/3501 co-relation queries the response was YES. [2022-12-13 13:54:55,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 550480 conditions, 269109 events. 198980/269109 cut-off events. For 3501/3501 co-relation queries the response was YES. Maximal size of possible extension queue 6731. Compared 1879230 event pairs, 84491 based on Foata normal form. 0/145158 useless extension candidates. Maximal degree in co-relation 550459. Up to 158461 conditions per place. [2022-12-13 13:54:56,302 INFO L137 encePairwiseOnDemand]: 679/683 looper letters, 138 selfloop transitions, 2 changer transitions 0/140 dead transitions. [2022-12-13 13:54:56,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 140 transitions, 833 flow [2022-12-13 13:54:56,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:54:56,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:54:56,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1058 transitions. [2022-12-13 13:54:56,305 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.51634943875061 [2022-12-13 13:54:56,305 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1058 transitions. [2022-12-13 13:54:56,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1058 transitions. [2022-12-13 13:54:56,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:54:56,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1058 transitions. [2022-12-13 13:54:56,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 352.6666666666667) internal successors, (1058), 3 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:56,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 683.0) internal successors, (2732), 4 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:56,309 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 683.0) internal successors, (2732), 4 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:56,309 INFO L175 Difference]: Start difference. First operand has 73 places, 102 transitions, 470 flow. Second operand 3 states and 1058 transitions. [2022-12-13 13:54:56,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 140 transitions, 833 flow [2022-12-13 13:54:56,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 140 transitions, 832 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:54:56,319 INFO L231 Difference]: Finished difference. Result has 75 places, 103 transitions, 483 flow [2022-12-13 13:54:56,319 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=683, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=483, PETRI_PLACES=75, PETRI_TRANSITIONS=103} [2022-12-13 13:54:56,319 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 19 predicate places. [2022-12-13 13:54:56,319 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 103 transitions, 483 flow [2022-12-13 13:54:56,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 324.6666666666667) internal successors, (974), 3 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:56,320 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:54:56,320 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:54:56,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 13:54:56,320 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 13:54:56,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:54:56,320 INFO L85 PathProgramCache]: Analyzing trace with hash -132805495, now seen corresponding path program 1 times [2022-12-13 13:54:56,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:54:56,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267555023] [2022-12-13 13:54:56,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:54:56,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:54:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:54:56,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:54:56,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:54:56,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267555023] [2022-12-13 13:54:56,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267555023] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:54:56,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873123214] [2022-12-13 13:54:56,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:54:56,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:54:56,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:54:56,401 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:54:56,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 13:54:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:54:56,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 13:54:56,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:54:56,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:54:56,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:54:56,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873123214] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:54:56,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:54:56,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-12-13 13:54:56,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662360318] [2022-12-13 13:54:56,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:54:56,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:54:56,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:54:56,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:54:56,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:54:56,563 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 683 [2022-12-13 13:54:56,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 103 transitions, 483 flow. Second operand has 4 states, 4 states have (on average 321.25) internal successors, (1285), 4 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:54:56,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:54:56,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 683 [2022-12-13 13:54:56,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:55:12,604 INFO L130 PetriNetUnfolder]: 188310/254523 cut-off events. [2022-12-13 13:55:12,604 INFO L131 PetriNetUnfolder]: For 26403/26403 co-relation queries the response was YES. [2022-12-13 13:55:13,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 540383 conditions, 254523 events. 188310/254523 cut-off events. For 26403/26403 co-relation queries the response was YES. Maximal size of possible extension queue 6290. Compared 1712464 event pairs, 138292 based on Foata normal form. 3916/151604 useless extension candidates. Maximal degree in co-relation 540361. Up to 254511 conditions per place. [2022-12-13 13:55:13,843 INFO L137 encePairwiseOnDemand]: 680/683 looper letters, 90 selfloop transitions, 12 changer transitions 0/102 dead transitions. [2022-12-13 13:55:13,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 102 transitions, 683 flow [2022-12-13 13:55:13,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:55:13,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:55:13,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1328 transitions. [2022-12-13 13:55:13,846 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.486090775988287 [2022-12-13 13:55:13,846 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1328 transitions. [2022-12-13 13:55:13,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1328 transitions. [2022-12-13 13:55:13,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:55:13,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1328 transitions. [2022-12-13 13:55:13,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:55:13,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 683.0) internal successors, (3415), 5 states have internal predecessors, (3415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:55:13,851 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 683.0) internal successors, (3415), 5 states have internal predecessors, (3415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:55:13,852 INFO L175 Difference]: Start difference. First operand has 75 places, 103 transitions, 483 flow. Second operand 4 states and 1328 transitions. [2022-12-13 13:55:13,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 102 transitions, 683 flow [2022-12-13 13:55:13,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 102 transitions, 680 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:55:13,896 INFO L231 Difference]: Finished difference. Result has 75 places, 102 transitions, 500 flow [2022-12-13 13:55:13,896 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=683, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=500, PETRI_PLACES=75, PETRI_TRANSITIONS=102} [2022-12-13 13:55:13,897 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 19 predicate places. [2022-12-13 13:55:13,897 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 102 transitions, 500 flow [2022-12-13 13:55:13,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 321.25) internal successors, (1285), 4 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:55:13,897 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:55:13,897 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:55:13,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 13:55:14,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-13 13:55:14,099 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 13:55:14,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:55:14,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1500320502, now seen corresponding path program 1 times [2022-12-13 13:55:14,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:55:14,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100004158] [2022-12-13 13:55:14,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:55:14,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:55:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:55:14,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:55:14,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:55:14,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100004158] [2022-12-13 13:55:14,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100004158] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:55:14,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:55:14,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:55:14,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987481271] [2022-12-13 13:55:14,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:55:14,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:55:14,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:55:14,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:55:14,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:55:14,331 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 683 [2022-12-13 13:55:14,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 102 transitions, 500 flow. Second operand has 5 states, 5 states have (on average 308.0) internal successors, (1540), 5 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:55:14,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:55:14,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 683 [2022-12-13 13:55:14,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:55:29,623 INFO L130 PetriNetUnfolder]: 180357/243622 cut-off events. [2022-12-13 13:55:29,623 INFO L131 PetriNetUnfolder]: For 14126/14126 co-relation queries the response was YES. [2022-12-13 13:55:30,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513466 conditions, 243622 events. 180357/243622 cut-off events. For 14126/14126 co-relation queries the response was YES. Maximal size of possible extension queue 6023. Compared 1631199 event pairs, 125290 based on Foata normal form. 0/142684 useless extension candidates. Maximal degree in co-relation 513444. Up to 116371 conditions per place. [2022-12-13 13:55:30,793 INFO L137 encePairwiseOnDemand]: 677/683 looper letters, 190 selfloop transitions, 15 changer transitions 0/205 dead transitions. [2022-12-13 13:55:30,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 205 transitions, 1312 flow [2022-12-13 13:55:30,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:55:30,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 13:55:30,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1961 transitions. [2022-12-13 13:55:30,797 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4785261102977062 [2022-12-13 13:55:30,798 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1961 transitions. [2022-12-13 13:55:30,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1961 transitions. [2022-12-13 13:55:30,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:55:30,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1961 transitions. [2022-12-13 13:55:30,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 326.8333333333333) internal successors, (1961), 6 states have internal predecessors, (1961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:55:30,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 683.0) internal successors, (4781), 7 states have internal predecessors, (4781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:55:30,804 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 683.0) internal successors, (4781), 7 states have internal predecessors, (4781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:55:30,804 INFO L175 Difference]: Start difference. First operand has 75 places, 102 transitions, 500 flow. Second operand 6 states and 1961 transitions. [2022-12-13 13:55:30,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 205 transitions, 1312 flow [2022-12-13 13:55:30,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 205 transitions, 1299 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:55:30,830 INFO L231 Difference]: Finished difference. Result has 81 places, 114 transitions, 634 flow [2022-12-13 13:55:30,830 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=683, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=634, PETRI_PLACES=81, PETRI_TRANSITIONS=114} [2022-12-13 13:55:30,830 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 25 predicate places. [2022-12-13 13:55:30,830 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 114 transitions, 634 flow [2022-12-13 13:55:30,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 308.0) internal successors, (1540), 5 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:55:30,831 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:55:30,831 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:55:30,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 13:55:30,831 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 13:55:30,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:55:30,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1500320548, now seen corresponding path program 1 times [2022-12-13 13:55:30,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:55:30,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278867037] [2022-12-13 13:55:30,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:55:30,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:55:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:55:30,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:55:30,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:55:30,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278867037] [2022-12-13 13:55:30,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278867037] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:55:30,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:55:30,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:55:30,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373130866] [2022-12-13 13:55:30,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:55:30,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:55:30,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:55:30,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:55:30,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:55:31,104 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 683 [2022-12-13 13:55:31,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 114 transitions, 634 flow. Second operand has 6 states, 6 states have (on average 307.6666666666667) internal successors, (1846), 6 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:55:31,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:55:31,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 683 [2022-12-13 13:55:31,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:55:46,915 INFO L130 PetriNetUnfolder]: 178911/241640 cut-off events. [2022-12-13 13:55:46,915 INFO L131 PetriNetUnfolder]: For 21785/21785 co-relation queries the response was YES. [2022-12-13 13:55:47,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520308 conditions, 241640 events. 178911/241640 cut-off events. For 21785/21785 co-relation queries the response was YES. Maximal size of possible extension queue 5934. Compared 1613850 event pairs, 124699 based on Foata normal form. 536/150619 useless extension candidates. Maximal degree in co-relation 520283. Up to 211539 conditions per place. [2022-12-13 13:55:48,243 INFO L137 encePairwiseOnDemand]: 676/683 looper letters, 145 selfloop transitions, 37 changer transitions 0/182 dead transitions. [2022-12-13 13:55:48,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 182 transitions, 1165 flow [2022-12-13 13:55:48,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:55:48,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 13:55:48,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2261 transitions. [2022-12-13 13:55:48,247 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47291361639824303 [2022-12-13 13:55:48,247 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2261 transitions. [2022-12-13 13:55:48,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2261 transitions. [2022-12-13 13:55:48,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:55:48,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2261 transitions. [2022-12-13 13:55:48,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.0) internal successors, (2261), 7 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:55:48,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 683.0) internal successors, (5464), 8 states have internal predecessors, (5464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:55:48,255 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 683.0) internal successors, (5464), 8 states have internal predecessors, (5464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:55:48,255 INFO L175 Difference]: Start difference. First operand has 81 places, 114 transitions, 634 flow. Second operand 7 states and 2261 transitions. [2022-12-13 13:55:48,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 182 transitions, 1165 flow [2022-12-13 13:55:48,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 182 transitions, 1162 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:55:48,304 INFO L231 Difference]: Finished difference. Result has 89 places, 116 transitions, 779 flow [2022-12-13 13:55:48,304 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=683, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=779, PETRI_PLACES=89, PETRI_TRANSITIONS=116} [2022-12-13 13:55:48,305 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 33 predicate places. [2022-12-13 13:55:48,305 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 116 transitions, 779 flow [2022-12-13 13:55:48,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 307.6666666666667) internal successors, (1846), 6 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:55:48,305 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:55:48,305 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:55:48,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 13:55:48,305 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 13:55:48,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:55:48,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1500322951, now seen corresponding path program 1 times [2022-12-13 13:55:48,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:55:48,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604674465] [2022-12-13 13:55:48,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:55:48,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:55:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:55:48,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:55:48,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:55:48,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604674465] [2022-12-13 13:55:48,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604674465] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:55:48,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:55:48,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:55:48,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783017643] [2022-12-13 13:55:48,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:55:48,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:55:48,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:55:48,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:55:48,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:55:48,350 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 683 [2022-12-13 13:55:48,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 116 transitions, 779 flow. Second operand has 3 states, 3 states have (on average 325.3333333333333) internal successors, (976), 3 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:55:48,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:55:48,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 683 [2022-12-13 13:55:48,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:56:16,807 INFO L130 PetriNetUnfolder]: 303360/410389 cut-off events. [2022-12-13 13:56:16,807 INFO L131 PetriNetUnfolder]: For 42726/42726 co-relation queries the response was YES. [2022-12-13 13:56:18,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 908787 conditions, 410389 events. 303360/410389 cut-off events. For 42726/42726 co-relation queries the response was YES. Maximal size of possible extension queue 9900. Compared 2953041 event pairs, 130609 based on Foata normal form. 0/262829 useless extension candidates. Maximal degree in co-relation 908758. Up to 241641 conditions per place. [2022-12-13 13:56:19,259 INFO L137 encePairwiseOnDemand]: 679/683 looper letters, 152 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2022-12-13 13:56:19,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 154 transitions, 1195 flow [2022-12-13 13:56:19,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:56:19,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:56:19,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1054 transitions. [2022-12-13 13:56:19,262 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5143972669594924 [2022-12-13 13:56:19,262 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1054 transitions. [2022-12-13 13:56:19,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1054 transitions. [2022-12-13 13:56:19,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:56:19,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1054 transitions. [2022-12-13 13:56:19,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 351.3333333333333) internal successors, (1054), 3 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:56:19,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 683.0) internal successors, (2732), 4 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:56:19,266 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 683.0) internal successors, (2732), 4 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:56:19,266 INFO L175 Difference]: Start difference. First operand has 89 places, 116 transitions, 779 flow. Second operand 3 states and 1054 transitions. [2022-12-13 13:56:19,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 154 transitions, 1195 flow [2022-12-13 13:56:19,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 154 transitions, 1180 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 13:56:19,618 INFO L231 Difference]: Finished difference. Result has 90 places, 117 transitions, 778 flow [2022-12-13 13:56:19,618 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=683, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=778, PETRI_PLACES=90, PETRI_TRANSITIONS=117} [2022-12-13 13:56:19,618 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 34 predicate places. [2022-12-13 13:56:19,618 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 117 transitions, 778 flow [2022-12-13 13:56:19,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 325.3333333333333) internal successors, (976), 3 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:56:19,619 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:56:19,619 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:56:19,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 13:56:19,619 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 13:56:19,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:19,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1562663660, now seen corresponding path program 1 times [2022-12-13 13:56:19,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:19,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252597000] [2022-12-13 13:56:19,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:19,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:19,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:56:19,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:19,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252597000] [2022-12-13 13:56:19,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252597000] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:56:19,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:56:19,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:56:19,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802587662] [2022-12-13 13:56:19,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:56:19,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:56:19,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:19,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:56:19,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:56:19,777 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 683 [2022-12-13 13:56:19,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 117 transitions, 778 flow. Second operand has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:56:19,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:56:19,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 683 [2022-12-13 13:56:19,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:56:40,805 INFO L130 PetriNetUnfolder]: 210082/287291 cut-off events. [2022-12-13 13:56:40,805 INFO L131 PetriNetUnfolder]: For 70060/70060 co-relation queries the response was YES. [2022-12-13 13:56:41,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 665267 conditions, 287291 events. 210082/287291 cut-off events. For 70060/70060 co-relation queries the response was YES. Maximal size of possible extension queue 7060. Compared 2025622 event pairs, 135567 based on Foata normal form. 0/198587 useless extension candidates. Maximal degree in co-relation 665238. Up to 216106 conditions per place. [2022-12-13 13:56:42,711 INFO L137 encePairwiseOnDemand]: 678/683 looper letters, 203 selfloop transitions, 4 changer transitions 0/207 dead transitions. [2022-12-13 13:56:42,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 207 transitions, 1547 flow [2022-12-13 13:56:42,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:56:42,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 13:56:42,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1658 transitions. [2022-12-13 13:56:42,714 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4855051244509517 [2022-12-13 13:56:42,714 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1658 transitions. [2022-12-13 13:56:42,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1658 transitions. [2022-12-13 13:56:42,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:56:42,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1658 transitions. [2022-12-13 13:56:42,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 331.6) internal successors, (1658), 5 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:56:42,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 683.0) internal successors, (4098), 6 states have internal predecessors, (4098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:56:42,719 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 683.0) internal successors, (4098), 6 states have internal predecessors, (4098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:56:42,719 INFO L175 Difference]: Start difference. First operand has 90 places, 117 transitions, 778 flow. Second operand 5 states and 1658 transitions. [2022-12-13 13:56:42,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 207 transitions, 1547 flow [2022-12-13 13:56:42,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 207 transitions, 1541 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:56:42,928 INFO L231 Difference]: Finished difference. Result has 95 places, 118 transitions, 795 flow [2022-12-13 13:56:42,928 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=683, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=795, PETRI_PLACES=95, PETRI_TRANSITIONS=118} [2022-12-13 13:56:42,929 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 39 predicate places. [2022-12-13 13:56:42,929 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 118 transitions, 795 flow [2022-12-13 13:56:42,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:56:42,929 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:56:42,929 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:56:42,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 13:56:42,929 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 13:56:42,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:56:42,930 INFO L85 PathProgramCache]: Analyzing trace with hash 737007082, now seen corresponding path program 1 times [2022-12-13 13:56:42,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:56:42,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001518119] [2022-12-13 13:56:42,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:56:42,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:56:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:56:42,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:56:42,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:56:42,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001518119] [2022-12-13 13:56:42,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001518119] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:56:42,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:56:42,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:56:42,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290199764] [2022-12-13 13:56:42,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:56:42,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:56:42,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:56:42,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:56:42,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:56:43,117 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 683 [2022-12-13 13:56:43,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 118 transitions, 795 flow. Second operand has 5 states, 5 states have (on average 308.2) internal successors, (1541), 5 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:56:43,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:56:43,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 683 [2022-12-13 13:56:43,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:57:04,342 INFO L130 PetriNetUnfolder]: 207944/284349 cut-off events. [2022-12-13 13:57:04,342 INFO L131 PetriNetUnfolder]: For 90783/90783 co-relation queries the response was YES. [2022-12-13 13:57:05,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 670480 conditions, 284349 events. 207944/284349 cut-off events. For 90783/90783 co-relation queries the response was YES. Maximal size of possible extension queue 7114. Compared 1995724 event pairs, 138410 based on Foata normal form. 0/203377 useless extension candidates. Maximal degree in co-relation 670448. Up to 230819 conditions per place. [2022-12-13 13:57:06,132 INFO L137 encePairwiseOnDemand]: 677/683 looper letters, 157 selfloop transitions, 36 changer transitions 0/193 dead transitions. [2022-12-13 13:57:06,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 193 transitions, 1413 flow [2022-12-13 13:57:06,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:57:06,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 13:57:06,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1959 transitions. [2022-12-13 13:57:06,136 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4780380673499268 [2022-12-13 13:57:06,136 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1959 transitions. [2022-12-13 13:57:06,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1959 transitions. [2022-12-13 13:57:06,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:57:06,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1959 transitions. [2022-12-13 13:57:06,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 326.5) internal successors, (1959), 6 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:06,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 683.0) internal successors, (4781), 7 states have internal predecessors, (4781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:06,142 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 683.0) internal successors, (4781), 7 states have internal predecessors, (4781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:06,142 INFO L175 Difference]: Start difference. First operand has 95 places, 118 transitions, 795 flow. Second operand 6 states and 1959 transitions. [2022-12-13 13:57:06,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 193 transitions, 1413 flow [2022-12-13 13:57:06,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 193 transitions, 1408 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:57:06,335 INFO L231 Difference]: Finished difference. Result has 100 places, 119 transitions, 904 flow [2022-12-13 13:57:06,335 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=683, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=904, PETRI_PLACES=100, PETRI_TRANSITIONS=119} [2022-12-13 13:57:06,336 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 44 predicate places. [2022-12-13 13:57:06,336 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 119 transitions, 904 flow [2022-12-13 13:57:06,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 308.2) internal successors, (1541), 5 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:06,336 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:57:06,336 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:57:06,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 13:57:06,336 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 13:57:06,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:06,336 INFO L85 PathProgramCache]: Analyzing trace with hash 737007064, now seen corresponding path program 1 times [2022-12-13 13:57:06,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:06,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248788589] [2022-12-13 13:57:06,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:06,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:06,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:57:06,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:06,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248788589] [2022-12-13 13:57:06,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248788589] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:57:06,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:57:06,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:57:06,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573508230] [2022-12-13 13:57:06,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:57:06,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:57:06,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:06,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:57:06,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:57:06,378 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 683 [2022-12-13 13:57:06,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 119 transitions, 904 flow. Second operand has 3 states, 3 states have (on average 325.6666666666667) internal successors, (977), 3 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:06,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:57:06,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 683 [2022-12-13 13:57:06,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:57:40,143 INFO L130 PetriNetUnfolder]: 309478/424295 cut-off events. [2022-12-13 13:57:40,143 INFO L131 PetriNetUnfolder]: For 154427/154427 co-relation queries the response was YES. [2022-12-13 13:57:41,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1052653 conditions, 424295 events. 309478/424295 cut-off events. For 154427/154427 co-relation queries the response was YES. Maximal size of possible extension queue 10959. Compared 3157728 event pairs, 158750 based on Foata normal form. 0/340823 useless extension candidates. Maximal degree in co-relation 1052620. Up to 284350 conditions per place. [2022-12-13 13:57:43,125 INFO L137 encePairwiseOnDemand]: 679/683 looper letters, 156 selfloop transitions, 2 changer transitions 0/158 dead transitions. [2022-12-13 13:57:43,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 158 transitions, 1355 flow [2022-12-13 13:57:43,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:57:43,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:57:43,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1052 transitions. [2022-12-13 13:57:43,127 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5134211810639336 [2022-12-13 13:57:43,128 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1052 transitions. [2022-12-13 13:57:43,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1052 transitions. [2022-12-13 13:57:43,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:57:43,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1052 transitions. [2022-12-13 13:57:43,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 350.6666666666667) internal successors, (1052), 3 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:43,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 683.0) internal successors, (2732), 4 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:43,131 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 683.0) internal successors, (2732), 4 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:43,131 INFO L175 Difference]: Start difference. First operand has 100 places, 119 transitions, 904 flow. Second operand 3 states and 1052 transitions. [2022-12-13 13:57:43,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 158 transitions, 1355 flow [2022-12-13 13:57:44,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 158 transitions, 1320 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:57:44,302 INFO L231 Difference]: Finished difference. Result has 101 places, 120 transitions, 883 flow [2022-12-13 13:57:44,303 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=683, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=883, PETRI_PLACES=101, PETRI_TRANSITIONS=120} [2022-12-13 13:57:44,303 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 45 predicate places. [2022-12-13 13:57:44,303 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 120 transitions, 883 flow [2022-12-13 13:57:44,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 325.6666666666667) internal successors, (977), 3 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:44,303 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:57:44,303 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:57:44,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 13:57:44,304 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 13:57:44,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:44,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1285079075, now seen corresponding path program 1 times [2022-12-13 13:57:44,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:44,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921464517] [2022-12-13 13:57:44,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:44,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:44,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:57:44,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:44,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921464517] [2022-12-13 13:57:44,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921464517] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:57:44,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346984140] [2022-12-13 13:57:44,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:44,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:57:44,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:57:44,376 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:57:44,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 13:57:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:44,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 13:57:44,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:57:44,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:57:44,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:57:44,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346984140] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:57:44,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:57:44,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2022-12-13 13:57:44,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753322412] [2022-12-13 13:57:44,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:57:44,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:57:44,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:44,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:57:44,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:57:44,524 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 683 [2022-12-13 13:57:44,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 120 transitions, 883 flow. Second operand has 4 states, 4 states have (on average 321.75) internal successors, (1287), 4 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:44,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:57:44,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 683 [2022-12-13 13:57:44,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:16,505 INFO L130 PetriNetUnfolder]: 286096/392161 cut-off events. [2022-12-13 13:58:16,505 INFO L131 PetriNetUnfolder]: For 200164/200164 co-relation queries the response was YES. [2022-12-13 13:58:18,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008080 conditions, 392161 events. 286096/392161 cut-off events. For 200164/200164 co-relation queries the response was YES. Maximal size of possible extension queue 9751. Compared 2843825 event pairs, 225734 based on Foata normal form. 8752/349389 useless extension candidates. Maximal degree in co-relation 1008046. Up to 392114 conditions per place. [2022-12-13 13:58:19,548 INFO L137 encePairwiseOnDemand]: 680/683 looper letters, 95 selfloop transitions, 23 changer transitions 0/118 dead transitions. [2022-12-13 13:58:19,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 118 transitions, 1106 flow [2022-12-13 13:58:19,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:58:19,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:58:19,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1327 transitions. [2022-12-13 13:58:19,552 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4857247437774524 [2022-12-13 13:58:19,552 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1327 transitions. [2022-12-13 13:58:19,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1327 transitions. [2022-12-13 13:58:19,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:19,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1327 transitions. [2022-12-13 13:58:19,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 331.75) internal successors, (1327), 4 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:19,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 683.0) internal successors, (3415), 5 states have internal predecessors, (3415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:19,559 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 683.0) internal successors, (3415), 5 states have internal predecessors, (3415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:19,559 INFO L175 Difference]: Start difference. First operand has 101 places, 120 transitions, 883 flow. Second operand 4 states and 1327 transitions. [2022-12-13 13:58:19,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 118 transitions, 1106 flow [2022-12-13 13:58:20,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 118 transitions, 1025 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 13:58:20,841 INFO L231 Difference]: Finished difference. Result has 98 places, 118 transitions, 835 flow [2022-12-13 13:58:20,841 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=683, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=835, PETRI_PLACES=98, PETRI_TRANSITIONS=118} [2022-12-13 13:58:20,841 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 42 predicate places. [2022-12-13 13:58:20,841 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 118 transitions, 835 flow [2022-12-13 13:58:20,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 321.75) internal successors, (1287), 4 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:20,842 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:20,842 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:20,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 13:58:21,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 13:58:21,044 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 13:58:21,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:21,045 INFO L85 PathProgramCache]: Analyzing trace with hash 737007083, now seen corresponding path program 1 times [2022-12-13 13:58:21,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:21,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249420421] [2022-12-13 13:58:21,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:21,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:21,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:21,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:21,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249420421] [2022-12-13 13:58:21,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249420421] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:21,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:58:21,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:58:21,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540389755] [2022-12-13 13:58:21,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:21,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:58:21,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:21,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:58:21,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:58:21,215 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 683 [2022-12-13 13:58:21,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 118 transitions, 835 flow. Second operand has 4 states, 4 states have (on average 311.75) internal successors, (1247), 4 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:21,216 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:21,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 683 [2022-12-13 13:58:21,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:59:18,560 INFO L130 PetriNetUnfolder]: 496878/674221 cut-off events. [2022-12-13 13:59:18,560 INFO L131 PetriNetUnfolder]: For 269465/269465 co-relation queries the response was YES. [2022-12-13 13:59:20,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1706666 conditions, 674221 events. 496878/674221 cut-off events. For 269465/269465 co-relation queries the response was YES. Maximal size of possible extension queue 16056. Compared 5051287 event pairs, 373292 based on Foata normal form. 18112/600189 useless extension candidates. Maximal degree in co-relation 1706633. Up to 331509 conditions per place. [2022-12-13 13:59:22,966 INFO L137 encePairwiseOnDemand]: 677/683 looper letters, 203 selfloop transitions, 16 changer transitions 0/219 dead transitions. [2022-12-13 13:59:22,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 219 transitions, 1651 flow [2022-12-13 13:59:22,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:59:22,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 13:59:22,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1682 transitions. [2022-12-13 13:59:22,969 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4925329428989751 [2022-12-13 13:59:22,969 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1682 transitions. [2022-12-13 13:59:22,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1682 transitions. [2022-12-13 13:59:22,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:59:22,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1682 transitions. [2022-12-13 13:59:22,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 336.4) internal successors, (1682), 5 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:59:22,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 683.0) internal successors, (4098), 6 states have internal predecessors, (4098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:59:22,973 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 683.0) internal successors, (4098), 6 states have internal predecessors, (4098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:59:22,973 INFO L175 Difference]: Start difference. First operand has 98 places, 118 transitions, 835 flow. Second operand 5 states and 1682 transitions. [2022-12-13 13:59:22,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 219 transitions, 1651 flow [2022-12-13 13:59:32,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 219 transitions, 1627 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:59:32,948 INFO L231 Difference]: Finished difference. Result has 103 places, 120 transitions, 881 flow [2022-12-13 13:59:32,949 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=683, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=881, PETRI_PLACES=103, PETRI_TRANSITIONS=120} [2022-12-13 13:59:32,949 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 47 predicate places. [2022-12-13 13:59:32,949 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 120 transitions, 881 flow [2022-12-13 13:59:32,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 311.75) internal successors, (1247), 4 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:59:32,949 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:59:32,949 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:59:32,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 13:59:32,949 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 13:59:32,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:59:32,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1222735917, now seen corresponding path program 1 times [2022-12-13 13:59:32,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:59:32,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888550317] [2022-12-13 13:59:32,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:59:32,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:59:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:32,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:59:32,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:59:32,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888550317] [2022-12-13 13:59:32,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888550317] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:59:32,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:59:32,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 13:59:32,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020972319] [2022-12-13 13:59:32,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:59:32,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:59:32,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:59:32,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:59:32,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:59:33,098 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 683 [2022-12-13 13:59:33,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 120 transitions, 881 flow. Second operand has 5 states, 5 states have (on average 309.2) internal successors, (1546), 5 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:59:33,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:59:33,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 683 [2022-12-13 13:59:33,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:00:21,390 INFO L130 PetriNetUnfolder]: 397470/549477 cut-off events. [2022-12-13 14:00:21,390 INFO L131 PetriNetUnfolder]: For 358349/358349 co-relation queries the response was YES. [2022-12-13 14:00:23,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1451895 conditions, 549477 events. 397470/549477 cut-off events. For 358349/358349 co-relation queries the response was YES. Maximal size of possible extension queue 13431. Compared 4255673 event pairs, 260080 based on Foata normal form. 3292/485377 useless extension candidates. Maximal degree in co-relation 1451861. Up to 392149 conditions per place. [2022-12-13 14:00:25,375 INFO L137 encePairwiseOnDemand]: 676/683 looper letters, 239 selfloop transitions, 19 changer transitions 0/258 dead transitions. [2022-12-13 14:00:25,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 258 transitions, 1876 flow [2022-12-13 14:00:25,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:00:25,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 14:00:25,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2326 transitions. [2022-12-13 14:00:25,380 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48650909851495505 [2022-12-13 14:00:25,380 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2326 transitions. [2022-12-13 14:00:25,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2326 transitions. [2022-12-13 14:00:25,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:00:25,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2326 transitions. [2022-12-13 14:00:25,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 332.2857142857143) internal successors, (2326), 7 states have internal predecessors, (2326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:00:25,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 683.0) internal successors, (5464), 8 states have internal predecessors, (5464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:00:25,387 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 683.0) internal successors, (5464), 8 states have internal predecessors, (5464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:00:25,387 INFO L175 Difference]: Start difference. First operand has 103 places, 120 transitions, 881 flow. Second operand 7 states and 2326 transitions. [2022-12-13 14:00:25,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 258 transitions, 1876 flow [2022-12-13 14:00:30,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 258 transitions, 1835 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 14:00:30,087 INFO L231 Difference]: Finished difference. Result has 112 places, 124 transitions, 934 flow [2022-12-13 14:00:30,088 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=683, PETRI_DIFFERENCE_MINUEND_FLOW=840, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=934, PETRI_PLACES=112, PETRI_TRANSITIONS=124} [2022-12-13 14:00:30,088 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 56 predicate places. [2022-12-13 14:00:30,088 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 124 transitions, 934 flow [2022-12-13 14:00:30,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 309.2) internal successors, (1546), 5 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:00:30,089 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:00:30,089 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:00:30,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 14:00:30,089 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 14:00:30,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:00:30,089 INFO L85 PathProgramCache]: Analyzing trace with hash 157879418, now seen corresponding path program 1 times [2022-12-13 14:00:30,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:00:30,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538088234] [2022-12-13 14:00:30,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:00:30,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:00:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:00:30,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:00:30,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:00:30,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538088234] [2022-12-13 14:00:30,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538088234] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:00:30,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838259052] [2022-12-13 14:00:30,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:00:30,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:00:30,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:00:30,164 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:00:30,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 14:00:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:00:30,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 14:00:30,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:00:30,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:00:30,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:00:30,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838259052] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:00:30,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:00:30,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 14:00:30,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401652433] [2022-12-13 14:00:30,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:00:30,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:00:30,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:00:30,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:00:30,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:00:30,297 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 683 [2022-12-13 14:00:30,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 124 transitions, 934 flow. Second operand has 3 states, 3 states have (on average 324.6666666666667) internal successors, (974), 3 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:00:30,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:00:30,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 683 [2022-12-13 14:00:30,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:01:12,763 INFO L130 PetriNetUnfolder]: 335670/463341 cut-off events. [2022-12-13 14:01:12,764 INFO L131 PetriNetUnfolder]: For 505076/505076 co-relation queries the response was YES. [2022-12-13 14:01:14,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1226446 conditions, 463341 events. 335670/463341 cut-off events. For 505076/505076 co-relation queries the response was YES. Maximal size of possible extension queue 11178. Compared 3478422 event pairs, 262476 based on Foata normal form. 23376/433633 useless extension candidates. Maximal degree in co-relation 1226408. Up to 463341 conditions per place. [2022-12-13 14:01:16,165 INFO L137 encePairwiseOnDemand]: 680/683 looper letters, 120 selfloop transitions, 1 changer transitions 0/121 dead transitions. [2022-12-13 14:01:16,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 121 transitions, 1151 flow [2022-12-13 14:01:16,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:01:16,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:01:16,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1013 transitions. [2022-12-13 14:01:16,167 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49438750610053683 [2022-12-13 14:01:16,167 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1013 transitions. [2022-12-13 14:01:16,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1013 transitions. [2022-12-13 14:01:16,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:01:16,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1013 transitions. [2022-12-13 14:01:16,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 337.6666666666667) internal successors, (1013), 3 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:01:16,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 683.0) internal successors, (2732), 4 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:01:16,171 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 683.0) internal successors, (2732), 4 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:01:16,171 INFO L175 Difference]: Start difference. First operand has 112 places, 124 transitions, 934 flow. Second operand 3 states and 1013 transitions. [2022-12-13 14:01:16,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 121 transitions, 1151 flow [2022-12-13 14:01:19,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 121 transitions, 1121 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-12-13 14:01:19,385 INFO L231 Difference]: Finished difference. Result has 104 places, 121 transitions, 881 flow [2022-12-13 14:01:19,385 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=683, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=881, PETRI_PLACES=104, PETRI_TRANSITIONS=121} [2022-12-13 14:01:19,385 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 48 predicate places. [2022-12-13 14:01:19,385 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 121 transitions, 881 flow [2022-12-13 14:01:19,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 324.6666666666667) internal successors, (974), 3 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:01:19,385 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:01:19,385 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:01:19,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 14:01:19,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:01:19,587 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 14:01:19,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:01:19,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1372383774, now seen corresponding path program 1 times [2022-12-13 14:01:19,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:01:19,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772713806] [2022-12-13 14:01:19,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:01:19,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:01:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:19,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:01:19,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:01:19,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772713806] [2022-12-13 14:01:19,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772713806] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:01:19,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:01:19,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:01:19,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947462403] [2022-12-13 14:01:19,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:01:19,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:01:19,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:01:19,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:01:19,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:01:19,767 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 683 [2022-12-13 14:01:19,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 121 transitions, 881 flow. Second operand has 5 states, 5 states have (on average 309.4) internal successors, (1547), 5 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:01:19,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:01:19,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 683 [2022-12-13 14:01:19,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:01:56,379 INFO L130 PetriNetUnfolder]: 293118/406837 cut-off events. [2022-12-13 14:01:56,379 INFO L131 PetriNetUnfolder]: For 324529/324529 co-relation queries the response was YES. [2022-12-13 14:01:58,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1073247 conditions, 406837 events. 293118/406837 cut-off events. For 324529/324529 co-relation queries the response was YES. Maximal size of possible extension queue 10097. Compared 3067756 event pairs, 203724 based on Foata normal form. 4796/366929 useless extension candidates. Maximal degree in co-relation 1073212. Up to 322093 conditions per place. [2022-12-13 14:01:59,373 INFO L137 encePairwiseOnDemand]: 677/683 looper letters, 201 selfloop transitions, 17 changer transitions 16/234 dead transitions. [2022-12-13 14:01:59,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 234 transitions, 1733 flow [2022-12-13 14:01:59,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:01:59,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 14:01:59,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2303 transitions. [2022-12-13 14:01:59,382 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4816983894582723 [2022-12-13 14:01:59,383 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2303 transitions. [2022-12-13 14:01:59,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2303 transitions. [2022-12-13 14:01:59,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:01:59,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2303 transitions. [2022-12-13 14:01:59,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 329.0) internal successors, (2303), 7 states have internal predecessors, (2303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:01:59,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 683.0) internal successors, (5464), 8 states have internal predecessors, (5464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:01:59,396 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 683.0) internal successors, (5464), 8 states have internal predecessors, (5464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:01:59,396 INFO L175 Difference]: Start difference. First operand has 104 places, 121 transitions, 881 flow. Second operand 7 states and 2303 transitions. [2022-12-13 14:01:59,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 234 transitions, 1733 flow [2022-12-13 14:02:03,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 234 transitions, 1732 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:02:03,045 INFO L231 Difference]: Finished difference. Result has 111 places, 123 transitions, 930 flow [2022-12-13 14:02:03,046 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=683, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=930, PETRI_PLACES=111, PETRI_TRANSITIONS=123} [2022-12-13 14:02:03,046 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 55 predicate places. [2022-12-13 14:02:03,046 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 123 transitions, 930 flow [2022-12-13 14:02:03,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 309.4) internal successors, (1547), 5 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:02:03,046 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:02:03,046 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:02:03,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 14:02:03,047 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 14:02:03,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:02:03,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1255675948, now seen corresponding path program 1 times [2022-12-13 14:02:03,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:02:03,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852774945] [2022-12-13 14:02:03,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:02:03,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:02:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:02:03,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:02:03,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:02:03,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852774945] [2022-12-13 14:02:03,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852774945] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:02:03,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134906097] [2022-12-13 14:02:03,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:02:03,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:02:03,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:02:03,121 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:02:03,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 14:02:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:02:03,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 14:02:03,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:02:03,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:02:03,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:02:03,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134906097] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:02:03,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:02:03,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2022-12-13 14:02:03,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555297924] [2022-12-13 14:02:03,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:02:03,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:02:03,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:02:03,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:02:03,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:02:03,285 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 683 [2022-12-13 14:02:03,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 123 transitions, 930 flow. Second operand has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:02:03,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:02:03,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 683 [2022-12-13 14:02:03,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:02:35,158 INFO L130 PetriNetUnfolder]: 249998/347525 cut-off events. [2022-12-13 14:02:35,158 INFO L131 PetriNetUnfolder]: For 339374/339374 co-relation queries the response was YES. [2022-12-13 14:02:36,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 920122 conditions, 347525 events. 249998/347525 cut-off events. For 339374/339374 co-relation queries the response was YES. Maximal size of possible extension queue 8655. Compared 2573525 event pairs, 196844 based on Foata normal form. 16192/324557 useless extension candidates. Maximal degree in co-relation 920085. Up to 347478 conditions per place. [2022-12-13 14:02:37,708 INFO L137 encePairwiseOnDemand]: 680/683 looper letters, 98 selfloop transitions, 23 changer transitions 0/121 dead transitions. [2022-12-13 14:02:37,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 121 transitions, 1159 flow [2022-12-13 14:02:37,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:02:37,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 14:02:37,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1324 transitions. [2022-12-13 14:02:37,712 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48462664714494874 [2022-12-13 14:02:37,712 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1324 transitions. [2022-12-13 14:02:37,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1324 transitions. [2022-12-13 14:02:37,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:02:37,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1324 transitions. [2022-12-13 14:02:37,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:02:37,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 683.0) internal successors, (3415), 5 states have internal predecessors, (3415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:02:37,716 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 683.0) internal successors, (3415), 5 states have internal predecessors, (3415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:02:37,716 INFO L175 Difference]: Start difference. First operand has 111 places, 123 transitions, 930 flow. Second operand 4 states and 1324 transitions. [2022-12-13 14:02:37,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 121 transitions, 1159 flow [2022-12-13 14:02:41,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 121 transitions, 1073 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 14:02:41,609 INFO L231 Difference]: Finished difference. Result has 108 places, 121 transitions, 877 flow [2022-12-13 14:02:41,610 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=683, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=877, PETRI_PLACES=108, PETRI_TRANSITIONS=121} [2022-12-13 14:02:41,610 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 52 predicate places. [2022-12-13 14:02:41,610 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 121 transitions, 877 flow [2022-12-13 14:02:41,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:02:41,610 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:02:41,610 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:02:41,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 14:02:41,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-13 14:02:41,812 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-12-13 14:02:41,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:02:41,813 INFO L85 PathProgramCache]: Analyzing trace with hash 287581882, now seen corresponding path program 1 times [2022-12-13 14:02:41,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:02:41,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259198589] [2022-12-13 14:02:41,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:02:41,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:02:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:02:41,904 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:02:41,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:02:41,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259198589] [2022-12-13 14:02:41,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259198589] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:02:41,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361816928] [2022-12-13 14:02:41,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:02:41,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:02:41,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:02:41,906 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:02:41,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e36a7c08-3bba-4087-812b-65de316870f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 14:02:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:02:41,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 14:02:41,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:02:42,053 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:02:42,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:02:42,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:02:42,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361816928] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:02:42,106 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:02:42,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2022-12-13 14:02:42,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122553112] [2022-12-13 14:02:42,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:02:42,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 14:02:42,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:02:42,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 14:02:42,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-12-13 14:02:42,845 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 683 [2022-12-13 14:02:42,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 121 transitions, 877 flow. Second operand has 16 states, 16 states have (on average 298.875) internal successors, (4782), 16 states have internal predecessors, (4782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:02:42,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:02:42,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 683 [2022-12-13 14:02:42,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand