./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 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_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS --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 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 --- 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-4e7fbc6 [2022-11-23 03:20:51,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:20:51,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:20:51,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:20:51,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:20:51,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:20:51,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:20:51,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:20:51,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:20:51,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:20:51,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:20:51,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:20:51,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:20:51,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:20:51,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:20:51,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:20:51,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:20:51,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:20:51,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:20:51,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:20:51,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:20:51,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:20:51,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:20:51,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:20:51,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:20:51,151 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:20:51,152 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:20:51,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:20:51,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:20:51,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:20:51,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:20:51,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:20:51,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:20:51,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:20:51,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:20:51,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:20:51,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:20:51,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:20:51,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:20:51,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:20:51,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:20:51,166 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-23 03:20:51,208 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:20:51,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:20:51,210 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:20:51,210 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:20:51,211 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:20:51,211 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:20:51,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:20:51,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:20:51,213 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:20:51,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:20:51,214 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:20:51,215 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 03:20:51,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:20:51,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:20:51,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:20:51,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:20:51,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:20:51,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:20:51,217 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 03:20:51,217 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:20:51,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:20:51,217 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:20:51,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:20:51,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:20:51,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:20:51,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:20:51,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:20:51,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:20:51,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:20:51,220 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:20:51,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:20:51,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:20:51,222 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:20:51,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:20:51,222 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:20:51,222 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:20:51,223 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_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 [2022-11-23 03:20:51,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:20:51,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:20:51,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:20:51,535 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:20:51,535 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:20:51,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2022-11-23 03:20:54,654 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:20:55,048 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:20:55,049 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2022-11-23 03:20:55,064 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/data/d9241b92c/f09e569f004f4a87bd6f3bd8296f0cc9/FLAGdb1f0b656 [2022-11-23 03:20:55,085 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/data/d9241b92c/f09e569f004f4a87bd6f3bd8296f0cc9 [2022-11-23 03:20:55,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:20:55,090 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:20:55,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:20:55,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:20:55,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:20:55,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:20:55" (1/1) ... [2022-11-23 03:20:55,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cd36db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:55, skipping insertion in model container [2022-11-23 03:20:55,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:20:55" (1/1) ... [2022-11-23 03:20:55,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:20:55,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:20:55,605 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_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2022-11-23 03:20:55,606 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:20:55,621 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:20:55,661 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_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2022-11-23 03:20:55,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:20:55,710 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:20:55,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:55 WrapperNode [2022-11-23 03:20:55,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:20:55,712 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:20:55,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:20:55,712 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:20:55,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:55" (1/1) ... [2022-11-23 03:20:55,734 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:55" (1/1) ... [2022-11-23 03:20:55,756 INFO L138 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2022-11-23 03:20:55,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:20:55,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:20:55,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:20:55,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:20:55,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:55" (1/1) ... [2022-11-23 03:20:55,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:55" (1/1) ... [2022-11-23 03:20:55,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:55" (1/1) ... [2022-11-23 03:20:55,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:55" (1/1) ... [2022-11-23 03:20:55,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:55" (1/1) ... [2022-11-23 03:20:55,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:55" (1/1) ... [2022-11-23 03:20:55,784 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:55" (1/1) ... [2022-11-23 03:20:55,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:55" (1/1) ... [2022-11-23 03:20:55,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:20:55,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:20:55,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:20:55,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:20:55,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:55" (1/1) ... [2022-11-23 03:20:55,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:20:55,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:20:55,836 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:20:55,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:20:55,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 03:20:55,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:20:55,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 03:20:55,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 03:20:55,886 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-23 03:20:55,887 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-23 03:20:55,887 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-23 03:20:55,888 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-23 03:20:55,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 03:20:55,888 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-23 03:20:55,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:20:55,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:20:55,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:20:55,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:20:55,890 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 03:20:56,089 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:20:56,091 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:20:56,421 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:20:56,429 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:20:56,430 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-23 03:20:56,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:20:56 BoogieIcfgContainer [2022-11-23 03:20:56,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:20:56,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:20:56,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:20:56,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:20:56,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:20:55" (1/3) ... [2022-11-23 03:20:56,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a2485e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:20:56, skipping insertion in model container [2022-11-23 03:20:56,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:55" (2/3) ... [2022-11-23 03:20:56,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a2485e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:20:56, skipping insertion in model container [2022-11-23 03:20:56,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:20:56" (3/3) ... [2022-11-23 03:20:56,447 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2022-11-23 03:20:56,457 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 03:20:56,469 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:20:56,469 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-23 03:20:56,470 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 03:20:56,626 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-23 03:20:56,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 150 transitions, 316 flow [2022-11-23 03:20:56,748 INFO L130 PetriNetUnfolder]: 10/148 cut-off events. [2022-11-23 03:20:56,748 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 03:20:56,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 148 events. 10/148 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 203 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 93. Up to 3 conditions per place. [2022-11-23 03:20:56,756 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 150 transitions, 316 flow [2022-11-23 03:20:56,762 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 132 transitions, 273 flow [2022-11-23 03:20:56,766 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 03:20:56,782 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 132 transitions, 273 flow [2022-11-23 03:20:56,785 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 132 transitions, 273 flow [2022-11-23 03:20:56,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 132 transitions, 273 flow [2022-11-23 03:20:56,825 INFO L130 PetriNetUnfolder]: 8/132 cut-off events. [2022-11-23 03:20:56,825 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 03:20:56,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 132 events. 8/132 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 183 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2022-11-23 03:20:56,829 INFO L119 LiptonReduction]: Number of co-enabled transitions 3074 [2022-11-23 03:21:05,553 INFO L134 LiptonReduction]: Checked pairs total: 6342 [2022-11-23 03:21:05,554 INFO L136 LiptonReduction]: Total number of compositions: 110 [2022-11-23 03:21:05,571 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:21:05,578 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;@7ca0387d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:21:05,579 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-23 03:21:05,584 INFO L130 PetriNetUnfolder]: 2/15 cut-off events. [2022-11-23 03:21:05,584 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-23 03:21:05,585 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:21:05,585 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 03:21:05,586 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 03:21:05,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:21:05,591 INFO L85 PathProgramCache]: Analyzing trace with hash -925066225, now seen corresponding path program 1 times [2022-11-23 03:21:05,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:21:05,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983386337] [2022-11-23 03:21:05,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:21:05,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:21:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:21:05,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:21:05,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:21:05,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983386337] [2022-11-23 03:21:05,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983386337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:21:05,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:21:05,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:21:05,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521860395] [2022-11-23 03:21:05,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:21:05,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 03:21:05,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:21:05,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 03:21:05,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:21:05,860 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 260 [2022-11-23 03:21:05,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 81 flow. Second operand has 2 states, 2 states have (on average 142.5) internal successors, (285), 2 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:05,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:21:05,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 260 [2022-11-23 03:21:05,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:21:06,070 INFO L130 PetriNetUnfolder]: 345/594 cut-off events. [2022-11-23 03:21:06,071 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-11-23 03:21:06,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1187 conditions, 594 events. 345/594 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2570 event pairs, 261 based on Foata normal form. 24/419 useless extension candidates. Maximal degree in co-relation 1074. Up to 561 conditions per place. [2022-11-23 03:21:06,084 INFO L137 encePairwiseOnDemand]: 259/260 looper letters, 28 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2022-11-23 03:21:06,085 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 135 flow [2022-11-23 03:21:06,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 03:21:06,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-23 03:21:06,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 309 transitions. [2022-11-23 03:21:06,102 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5942307692307692 [2022-11-23 03:21:06,103 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 309 transitions. [2022-11-23 03:21:06,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 309 transitions. [2022-11-23 03:21:06,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:21:06,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 309 transitions. [2022-11-23 03:21:06,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 154.5) internal successors, (309), 2 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:06,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:06,120 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:06,122 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 81 flow. Second operand 2 states and 309 transitions. [2022-11-23 03:21:06,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 135 flow [2022-11-23 03:21:06,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 35 transitions, 130 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-23 03:21:06,145 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 74 flow [2022-11-23 03:21:06,147 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=74, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2022-11-23 03:21:06,151 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, -2 predicate places. [2022-11-23 03:21:06,151 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 74 flow [2022-11-23 03:21:06,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 142.5) internal successors, (285), 2 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:06,152 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:21:06,152 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:21:06,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 03:21:06,152 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 03:21:06,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:21:06,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1387617488, now seen corresponding path program 1 times [2022-11-23 03:21:06,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:21:06,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246893760] [2022-11-23 03:21:06,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:21:06,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:21:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:21:06,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:21:06,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:21:06,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246893760] [2022-11-23 03:21:06,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246893760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:21:06,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:21:06,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:21:06,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937994862] [2022-11-23 03:21:06,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:21:06,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:21:06,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:21:06,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:21:06,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:21:06,409 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 260 [2022-11-23 03:21:06,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 130.5) internal successors, (522), 4 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:06,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:21:06,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 260 [2022-11-23 03:21:06,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:21:06,709 INFO L130 PetriNetUnfolder]: 696/1187 cut-off events. [2022-11-23 03:21:06,709 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-23 03:21:06,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2332 conditions, 1187 events. 696/1187 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5579 event pairs, 71 based on Foata normal form. 12/823 useless extension candidates. Maximal degree in co-relation 2329. Up to 797 conditions per place. [2022-11-23 03:21:06,720 INFO L137 encePairwiseOnDemand]: 248/260 looper letters, 68 selfloop transitions, 12 changer transitions 3/86 dead transitions. [2022-11-23 03:21:06,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 86 transitions, 349 flow [2022-11-23 03:21:06,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:21:06,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 03:21:06,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 735 transitions. [2022-11-23 03:21:06,729 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5653846153846154 [2022-11-23 03:21:06,729 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 735 transitions. [2022-11-23 03:21:06,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 735 transitions. [2022-11-23 03:21:06,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:21:06,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 735 transitions. [2022-11-23 03:21:06,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 147.0) internal successors, (735), 5 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:06,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:06,742 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:06,742 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 74 flow. Second operand 5 states and 735 transitions. [2022-11-23 03:21:06,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 86 transitions, 349 flow [2022-11-23 03:21:06,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 86 transitions, 349 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 03:21:06,745 INFO L231 Difference]: Finished difference. Result has 44 places, 46 transitions, 178 flow [2022-11-23 03:21:06,746 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=44, PETRI_TRANSITIONS=46} [2022-11-23 03:21:06,748 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 6 predicate places. [2022-11-23 03:21:06,749 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 46 transitions, 178 flow [2022-11-23 03:21:06,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.5) internal successors, (522), 4 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:06,750 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:21:06,750 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:21:06,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 03:21:06,751 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 03:21:06,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:21:06,755 INFO L85 PathProgramCache]: Analyzing trace with hash 66473431, now seen corresponding path program 1 times [2022-11-23 03:21:06,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:21:06,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456964453] [2022-11-23 03:21:06,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:21:06,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:21:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:21:06,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:21:06,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:21:06,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456964453] [2022-11-23 03:21:06,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456964453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:21:06,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:21:06,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:21:06,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987557304] [2022-11-23 03:21:06,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:21:06,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:21:06,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:21:06,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:21:06,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:21:06,923 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 260 [2022-11-23 03:21:06,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 46 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:06,924 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:21:06,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 260 [2022-11-23 03:21:06,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:21:07,125 INFO L130 PetriNetUnfolder]: 557/1054 cut-off events. [2022-11-23 03:21:07,125 INFO L131 PetriNetUnfolder]: For 324/332 co-relation queries the response was YES. [2022-11-23 03:21:07,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2688 conditions, 1054 events. 557/1054 cut-off events. For 324/332 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5416 event pairs, 186 based on Foata normal form. 4/796 useless extension candidates. Maximal degree in co-relation 2681. Up to 754 conditions per place. [2022-11-23 03:21:07,137 INFO L137 encePairwiseOnDemand]: 255/260 looper letters, 52 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2022-11-23 03:21:07,137 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 65 transitions, 348 flow [2022-11-23 03:21:07,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:21:07,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:21:07,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions. [2022-11-23 03:21:07,140 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5858974358974359 [2022-11-23 03:21:07,141 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 457 transitions. [2022-11-23 03:21:07,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 457 transitions. [2022-11-23 03:21:07,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:21:07,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 457 transitions. [2022-11-23 03:21:07,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:07,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:07,147 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:07,147 INFO L175 Difference]: Start difference. First operand has 44 places, 46 transitions, 178 flow. Second operand 3 states and 457 transitions. [2022-11-23 03:21:07,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 65 transitions, 348 flow [2022-11-23 03:21:07,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 65 transitions, 348 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 03:21:07,154 INFO L231 Difference]: Finished difference. Result has 47 places, 48 transitions, 213 flow [2022-11-23 03:21:07,154 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=47, PETRI_TRANSITIONS=48} [2022-11-23 03:21:07,156 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 9 predicate places. [2022-11-23 03:21:07,157 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 48 transitions, 213 flow [2022-11-23 03:21:07,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:07,158 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:21:07,158 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:21:07,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 03:21:07,158 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 03:21:07,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:21:07,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1512382768, now seen corresponding path program 1 times [2022-11-23 03:21:07,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:21:07,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117876445] [2022-11-23 03:21:07,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:21:07,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:21:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:21:07,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:21:07,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:21:07,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117876445] [2022-11-23 03:21:07,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117876445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:21:07,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:21:07,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:21:07,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167582097] [2022-11-23 03:21:07,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:21:07,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:21:07,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:21:07,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:21:07,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:21:07,371 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 260 [2022-11-23 03:21:07,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 48 transitions, 213 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:07,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:21:07,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 260 [2022-11-23 03:21:07,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:21:07,517 INFO L130 PetriNetUnfolder]: 309/674 cut-off events. [2022-11-23 03:21:07,521 INFO L131 PetriNetUnfolder]: For 185/185 co-relation queries the response was YES. [2022-11-23 03:21:07,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1682 conditions, 674 events. 309/674 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3420 event pairs, 108 based on Foata normal form. 44/622 useless extension candidates. Maximal degree in co-relation 1673. Up to 311 conditions per place. [2022-11-23 03:21:07,527 INFO L137 encePairwiseOnDemand]: 248/260 looper letters, 28 selfloop transitions, 16 changer transitions 0/51 dead transitions. [2022-11-23 03:21:07,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 51 transitions, 282 flow [2022-11-23 03:21:07,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:21:07,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:21:07,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2022-11-23 03:21:07,531 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5551282051282052 [2022-11-23 03:21:07,531 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 433 transitions. [2022-11-23 03:21:07,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions. [2022-11-23 03:21:07,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:21:07,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions. [2022-11-23 03:21:07,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:07,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:07,541 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:07,541 INFO L175 Difference]: Start difference. First operand has 47 places, 48 transitions, 213 flow. Second operand 3 states and 433 transitions. [2022-11-23 03:21:07,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 51 transitions, 282 flow [2022-11-23 03:21:07,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 51 transitions, 267 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-23 03:21:07,550 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 186 flow [2022-11-23 03:21:07,551 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2022-11-23 03:21:07,552 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 10 predicate places. [2022-11-23 03:21:07,553 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 186 flow [2022-11-23 03:21:07,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:07,553 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:21:07,554 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-23 03:21:07,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 03:21:07,555 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 03:21:07,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:21:07,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1657483612, now seen corresponding path program 1 times [2022-11-23 03:21:07,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:21:07,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959136609] [2022-11-23 03:21:07,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:21:07,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:21:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:21:07,670 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:21:07,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:21:07,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959136609] [2022-11-23 03:21:07,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959136609] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:21:07,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057311243] [2022-11-23 03:21:07,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:21:07,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:21:07,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:21:07,678 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:21:07,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 03:21:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:21:07,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 03:21:07,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:21:07,881 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:21:07,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:21:07,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057311243] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:21:07,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:21:07,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-23 03:21:07,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826522224] [2022-11-23 03:21:07,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:21:07,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:21:07,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:21:07,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:21:07,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:21:07,927 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 260 [2022-11-23 03:21:07,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 186 flow. Second operand has 5 states, 5 states have (on average 130.4) internal successors, (652), 5 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:07,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:21:07,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 260 [2022-11-23 03:21:07,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:21:08,187 INFO L130 PetriNetUnfolder]: 386/777 cut-off events. [2022-11-23 03:21:08,187 INFO L131 PetriNetUnfolder]: For 176/176 co-relation queries the response was YES. [2022-11-23 03:21:08,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2082 conditions, 777 events. 386/777 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3311 event pairs, 81 based on Foata normal form. 26/715 useless extension candidates. Maximal degree in co-relation 2073. Up to 304 conditions per place. [2022-11-23 03:21:08,193 INFO L137 encePairwiseOnDemand]: 247/260 looper letters, 59 selfloop transitions, 12 changer transitions 7/80 dead transitions. [2022-11-23 03:21:08,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 80 transitions, 450 flow [2022-11-23 03:21:08,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:21:08,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 03:21:08,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 976 transitions. [2022-11-23 03:21:08,196 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5362637362637362 [2022-11-23 03:21:08,197 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 976 transitions. [2022-11-23 03:21:08,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 976 transitions. [2022-11-23 03:21:08,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:21:08,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 976 transitions. [2022-11-23 03:21:08,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 139.42857142857142) internal successors, (976), 7 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) [2022-11-23 03:21:08,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 260.0) internal successors, (2080), 8 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:08,206 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 260.0) internal successors, (2080), 8 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:08,206 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 186 flow. Second operand 7 states and 976 transitions. [2022-11-23 03:21:08,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 80 transitions, 450 flow [2022-11-23 03:21:08,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 80 transitions, 427 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 03:21:08,210 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 227 flow [2022-11-23 03:21:08,210 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=227, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2022-11-23 03:21:08,210 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 17 predicate places. [2022-11-23 03:21:08,211 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 227 flow [2022-11-23 03:21:08,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 130.4) internal successors, (652), 5 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:08,212 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:21:08,212 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:21:08,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 03:21:08,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:21:08,417 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 03:21:08,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:21:08,418 INFO L85 PathProgramCache]: Analyzing trace with hash -682036895, now seen corresponding path program 1 times [2022-11-23 03:21:08,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:21:08,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524041740] [2022-11-23 03:21:08,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:21:08,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:21:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:21:08,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:21:08,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:21:08,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524041740] [2022-11-23 03:21:08,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524041740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:21:08,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:21:08,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:21:08,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275385448] [2022-11-23 03:21:08,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:21:08,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:21:08,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:21:08,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:21:08,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:21:08,606 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 260 [2022-11-23 03:21:08,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 227 flow. Second operand has 5 states, 5 states have (on average 130.6) internal successors, (653), 5 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:08,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:21:08,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 260 [2022-11-23 03:21:08,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:21:08,861 INFO L130 PetriNetUnfolder]: 389/798 cut-off events. [2022-11-23 03:21:08,862 INFO L131 PetriNetUnfolder]: For 335/335 co-relation queries the response was YES. [2022-11-23 03:21:08,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2230 conditions, 798 events. 389/798 cut-off events. For 335/335 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3560 event pairs, 79 based on Foata normal form. 12/766 useless extension candidates. Maximal degree in co-relation 2219. Up to 311 conditions per place. [2022-11-23 03:21:08,867 INFO L137 encePairwiseOnDemand]: 249/260 looper letters, 60 selfloop transitions, 12 changer transitions 6/80 dead transitions. [2022-11-23 03:21:08,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 80 transitions, 484 flow [2022-11-23 03:21:08,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:21:08,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 03:21:08,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 843 transitions. [2022-11-23 03:21:08,871 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5403846153846154 [2022-11-23 03:21:08,871 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 843 transitions. [2022-11-23 03:21:08,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 843 transitions. [2022-11-23 03:21:08,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:21:08,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 843 transitions. [2022-11-23 03:21:08,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 140.5) internal successors, (843), 6 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:08,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:08,881 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:08,881 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 227 flow. Second operand 6 states and 843 transitions. [2022-11-23 03:21:08,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 80 transitions, 484 flow [2022-11-23 03:21:08,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 80 transitions, 474 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-23 03:21:08,886 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 271 flow [2022-11-23 03:21:08,888 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=271, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2022-11-23 03:21:08,891 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 21 predicate places. [2022-11-23 03:21:08,891 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 271 flow [2022-11-23 03:21:08,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 130.6) internal successors, (653), 5 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:08,892 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:21:08,892 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:21:08,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 03:21:08,892 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 03:21:08,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:21:08,893 INFO L85 PathProgramCache]: Analyzing trace with hash 928463265, now seen corresponding path program 1 times [2022-11-23 03:21:08,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:21:08,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072299683] [2022-11-23 03:21:08,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:21:08,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:21:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:21:08,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:21:08,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:21:08,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072299683] [2022-11-23 03:21:08,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072299683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:21:08,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:21:08,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:21:08,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495454944] [2022-11-23 03:21:08,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:21:08,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:21:08,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:21:08,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:21:08,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:21:08,992 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 260 [2022-11-23 03:21:08,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 271 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:08,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:21:08,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 260 [2022-11-23 03:21:08,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:21:09,165 INFO L130 PetriNetUnfolder]: 334/743 cut-off events. [2022-11-23 03:21:09,165 INFO L131 PetriNetUnfolder]: For 642/646 co-relation queries the response was YES. [2022-11-23 03:21:09,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2144 conditions, 743 events. 334/743 cut-off events. For 642/646 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3495 event pairs, 190 based on Foata normal form. 18/709 useless extension candidates. Maximal degree in co-relation 2131. Up to 496 conditions per place. [2022-11-23 03:21:09,171 INFO L137 encePairwiseOnDemand]: 255/260 looper letters, 49 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2022-11-23 03:21:09,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 62 transitions, 441 flow [2022-11-23 03:21:09,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:21:09,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:21:09,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions. [2022-11-23 03:21:09,173 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5820512820512821 [2022-11-23 03:21:09,174 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions. [2022-11-23 03:21:09,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions. [2022-11-23 03:21:09,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:21:09,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions. [2022-11-23 03:21:09,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:09,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:09,178 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:09,178 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 271 flow. Second operand 3 states and 454 transitions. [2022-11-23 03:21:09,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 62 transitions, 441 flow [2022-11-23 03:21:09,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 62 transitions, 419 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-23 03:21:09,183 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 270 flow [2022-11-23 03:21:09,183 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2022-11-23 03:21:09,184 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2022-11-23 03:21:09,184 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 270 flow [2022-11-23 03:21:09,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:09,185 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:21:09,185 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:21:09,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 03:21:09,185 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 03:21:09,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:21:09,186 INFO L85 PathProgramCache]: Analyzing trace with hash -861988353, now seen corresponding path program 1 times [2022-11-23 03:21:09,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:21:09,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467516747] [2022-11-23 03:21:09,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:21:09,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:21:09,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:21:09,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:21:09,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:21:09,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467516747] [2022-11-23 03:21:09,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467516747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:21:09,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:21:09,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 03:21:09,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756647068] [2022-11-23 03:21:09,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:21:09,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:21:09,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:21:09,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:21:09,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:21:09,381 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 260 [2022-11-23 03:21:09,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 270 flow. Second operand has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:09,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:21:09,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 260 [2022-11-23 03:21:09,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:21:09,715 INFO L130 PetriNetUnfolder]: 515/1048 cut-off events. [2022-11-23 03:21:09,715 INFO L131 PetriNetUnfolder]: For 809/809 co-relation queries the response was YES. [2022-11-23 03:21:09,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3165 conditions, 1048 events. 515/1048 cut-off events. For 809/809 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4802 event pairs, 87 based on Foata normal form. 20/1000 useless extension candidates. Maximal degree in co-relation 3151. Up to 299 conditions per place. [2022-11-23 03:21:09,722 INFO L137 encePairwiseOnDemand]: 244/260 looper letters, 77 selfloop transitions, 20 changer transitions 3/102 dead transitions. [2022-11-23 03:21:09,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 102 transitions, 658 flow [2022-11-23 03:21:09,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 03:21:09,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-23 03:21:09,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1213 transitions. [2022-11-23 03:21:09,727 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5183760683760684 [2022-11-23 03:21:09,727 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1213 transitions. [2022-11-23 03:21:09,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1213 transitions. [2022-11-23 03:21:09,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:21:09,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1213 transitions. [2022-11-23 03:21:09,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 134.77777777777777) internal successors, (1213), 9 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:09,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 260.0) internal successors, (2600), 10 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:09,736 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 260.0) internal successors, (2600), 10 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:09,736 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 270 flow. Second operand 9 states and 1213 transitions. [2022-11-23 03:21:09,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 102 transitions, 658 flow [2022-11-23 03:21:09,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 102 transitions, 653 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 03:21:09,740 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 388 flow [2022-11-23 03:21:09,741 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=388, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2022-11-23 03:21:09,741 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 30 predicate places. [2022-11-23 03:21:09,742 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 388 flow [2022-11-23 03:21:09,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:09,742 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:21:09,742 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:21:09,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 03:21:09,743 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 03:21:09,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:21:09,743 INFO L85 PathProgramCache]: Analyzing trace with hash 260189723, now seen corresponding path program 1 times [2022-11-23 03:21:09,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:21:09,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992344779] [2022-11-23 03:21:09,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:21:09,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:21:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:21:09,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:21:09,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:21:09,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992344779] [2022-11-23 03:21:09,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992344779] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:21:09,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715454333] [2022-11-23 03:21:09,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:21:09,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:21:09,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:21:09,875 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:21:09,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 03:21:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:21:09,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 03:21:09,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:21:10,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:21:10,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:21:10,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:21:10,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715454333] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:21:10,143 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:21:10,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2022-11-23 03:21:10,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541160987] [2022-11-23 03:21:10,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:21:10,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 03:21:10,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:21:10,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 03:21:10,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-23 03:21:10,227 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 260 [2022-11-23 03:21:10,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 388 flow. Second operand has 12 states, 12 states have (on average 128.0) internal successors, (1536), 12 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:10,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:21:10,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 260 [2022-11-23 03:21:10,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:21:10,596 INFO L130 PetriNetUnfolder]: 526/1089 cut-off events. [2022-11-23 03:21:10,596 INFO L131 PetriNetUnfolder]: For 1579/1579 co-relation queries the response was YES. [2022-11-23 03:21:10,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3581 conditions, 1089 events. 526/1089 cut-off events. For 1579/1579 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 5181 event pairs, 77 based on Foata normal form. 58/1079 useless extension candidates. Maximal degree in co-relation 3565. Up to 378 conditions per place. [2022-11-23 03:21:10,604 INFO L137 encePairwiseOnDemand]: 241/260 looper letters, 54 selfloop transitions, 34 changer transitions 3/93 dead transitions. [2022-11-23 03:21:10,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 93 transitions, 674 flow [2022-11-23 03:21:10,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 03:21:10,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-23 03:21:10,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1194 transitions. [2022-11-23 03:21:10,608 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5102564102564102 [2022-11-23 03:21:10,608 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1194 transitions. [2022-11-23 03:21:10,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1194 transitions. [2022-11-23 03:21:10,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:21:10,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1194 transitions. [2022-11-23 03:21:10,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 132.66666666666666) internal successors, (1194), 9 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:10,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 260.0) internal successors, (2600), 10 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:10,619 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 260.0) internal successors, (2600), 10 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:10,619 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 388 flow. Second operand 9 states and 1194 transitions. [2022-11-23 03:21:10,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 93 transitions, 674 flow [2022-11-23 03:21:10,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 93 transitions, 661 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-23 03:21:10,627 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 450 flow [2022-11-23 03:21:10,627 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=450, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2022-11-23 03:21:10,628 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 31 predicate places. [2022-11-23 03:21:10,628 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 450 flow [2022-11-23 03:21:10,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 128.0) internal successors, (1536), 12 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:10,629 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:21:10,629 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:21:10,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 03:21:10,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:21:10,830 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 03:21:10,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:21:10,831 INFO L85 PathProgramCache]: Analyzing trace with hash 928922627, now seen corresponding path program 1 times [2022-11-23 03:21:10,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:21:10,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626520426] [2022-11-23 03:21:10,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:21:10,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:21:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:21:10,895 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:21:10,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:21:10,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626520426] [2022-11-23 03:21:10,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626520426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:21:10,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:21:10,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:21:10,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667974173] [2022-11-23 03:21:10,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:21:10,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:21:10,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:21:10,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:21:10,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:21:10,908 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 260 [2022-11-23 03:21:10,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 450 flow. Second operand has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:10,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:21:10,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 260 [2022-11-23 03:21:10,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:21:11,094 INFO L130 PetriNetUnfolder]: 428/925 cut-off events. [2022-11-23 03:21:11,095 INFO L131 PetriNetUnfolder]: For 1504/1506 co-relation queries the response was YES. [2022-11-23 03:21:11,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3294 conditions, 925 events. 428/925 cut-off events. For 1504/1506 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4424 event pairs, 124 based on Foata normal form. 2/875 useless extension candidates. Maximal degree in co-relation 3277. Up to 780 conditions per place. [2022-11-23 03:21:11,101 INFO L137 encePairwiseOnDemand]: 258/260 looper letters, 45 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2022-11-23 03:21:11,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 59 transitions, 538 flow [2022-11-23 03:21:11,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:21:11,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:21:11,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2022-11-23 03:21:11,104 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2022-11-23 03:21:11,104 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2022-11-23 03:21:11,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2022-11-23 03:21:11,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:21:11,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2022-11-23 03:21:11,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:11,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:11,110 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:11,110 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 450 flow. Second operand 3 states and 440 transitions. [2022-11-23 03:21:11,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 59 transitions, 538 flow [2022-11-23 03:21:11,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 59 transitions, 483 flow, removed 5 selfloop flow, removed 7 redundant places. [2022-11-23 03:21:11,117 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 375 flow [2022-11-23 03:21:11,118 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=375, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2022-11-23 03:21:11,119 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 25 predicate places. [2022-11-23 03:21:11,119 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 375 flow [2022-11-23 03:21:11,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:11,120 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:21:11,120 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:21:11,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 03:21:11,121 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 03:21:11,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:21:11,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1903739507, now seen corresponding path program 1 times [2022-11-23 03:21:11,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:21:11,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484371586] [2022-11-23 03:21:11,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:21:11,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:21:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:21:11,183 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:21:11,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:21:11,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484371586] [2022-11-23 03:21:11,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484371586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:21:11,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:21:11,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:21:11,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852836301] [2022-11-23 03:21:11,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:21:11,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:21:11,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:21:11,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:21:11,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:21:11,195 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 260 [2022-11-23 03:21:11,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 375 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:11,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:21:11,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 260 [2022-11-23 03:21:11,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:21:11,369 INFO L130 PetriNetUnfolder]: 393/836 cut-off events. [2022-11-23 03:21:11,370 INFO L131 PetriNetUnfolder]: For 1172/1174 co-relation queries the response was YES. [2022-11-23 03:21:11,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2734 conditions, 836 events. 393/836 cut-off events. For 1172/1174 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3739 event pairs, 190 based on Foata normal form. 2/806 useless extension candidates. Maximal degree in co-relation 2718. Up to 440 conditions per place. [2022-11-23 03:21:11,376 INFO L137 encePairwiseOnDemand]: 256/260 looper letters, 55 selfloop transitions, 5 changer transitions 1/74 dead transitions. [2022-11-23 03:21:11,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 74 transitions, 627 flow [2022-11-23 03:21:11,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:21:11,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:21:11,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 445 transitions. [2022-11-23 03:21:11,378 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5705128205128205 [2022-11-23 03:21:11,379 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 445 transitions. [2022-11-23 03:21:11,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 445 transitions. [2022-11-23 03:21:11,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:21:11,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 445 transitions. [2022-11-23 03:21:11,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:11,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:11,383 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:11,383 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 375 flow. Second operand 3 states and 445 transitions. [2022-11-23 03:21:11,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 74 transitions, 627 flow [2022-11-23 03:21:11,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 74 transitions, 626 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 03:21:11,392 INFO L231 Difference]: Finished difference. Result has 64 places, 52 transitions, 374 flow [2022-11-23 03:21:11,392 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=64, PETRI_TRANSITIONS=52} [2022-11-23 03:21:11,393 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 26 predicate places. [2022-11-23 03:21:11,393 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 52 transitions, 374 flow [2022-11-23 03:21:11,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:11,393 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:21:11,394 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:21:11,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 03:21:11,394 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 03:21:11,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:21:11,395 INFO L85 PathProgramCache]: Analyzing trace with hash 647734585, now seen corresponding path program 1 times [2022-11-23 03:21:11,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:21:11,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684578048] [2022-11-23 03:21:11,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:21:11,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:21:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:21:11,455 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:21:11,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:21:11,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684578048] [2022-11-23 03:21:11,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684578048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:21:11,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:21:11,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:21:11,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688608533] [2022-11-23 03:21:11,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:21:11,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:21:11,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:21:11,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:21:11,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:21:11,468 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 260 [2022-11-23 03:21:11,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 52 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:11,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:21:11,470 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 260 [2022-11-23 03:21:11,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:21:11,632 INFO L130 PetriNetUnfolder]: 358/749 cut-off events. [2022-11-23 03:21:11,632 INFO L131 PetriNetUnfolder]: For 1205/1207 co-relation queries the response was YES. [2022-11-23 03:21:11,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2506 conditions, 749 events. 358/749 cut-off events. For 1205/1207 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3189 event pairs, 88 based on Foata normal form. 2/731 useless extension candidates. Maximal degree in co-relation 2490. Up to 456 conditions per place. [2022-11-23 03:21:11,637 INFO L137 encePairwiseOnDemand]: 256/260 looper letters, 45 selfloop transitions, 5 changer transitions 0/63 dead transitions. [2022-11-23 03:21:11,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 63 transitions, 530 flow [2022-11-23 03:21:11,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:21:11,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:21:11,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 439 transitions. [2022-11-23 03:21:11,640 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5628205128205128 [2022-11-23 03:21:11,640 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 439 transitions. [2022-11-23 03:21:11,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 439 transitions. [2022-11-23 03:21:11,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:21:11,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 439 transitions. [2022-11-23 03:21:11,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:11,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:11,644 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:11,644 INFO L175 Difference]: Start difference. First operand has 64 places, 52 transitions, 374 flow. Second operand 3 states and 439 transitions. [2022-11-23 03:21:11,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 63 transitions, 530 flow [2022-11-23 03:21:11,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 63 transitions, 521 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 03:21:11,650 INFO L231 Difference]: Finished difference. Result has 65 places, 51 transitions, 369 flow [2022-11-23 03:21:11,651 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=369, PETRI_PLACES=65, PETRI_TRANSITIONS=51} [2022-11-23 03:21:11,653 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 27 predicate places. [2022-11-23 03:21:11,653 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 51 transitions, 369 flow [2022-11-23 03:21:11,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:11,654 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:21:11,654 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:21:11,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 03:21:11,654 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 03:21:11,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:21:11,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1720633489, now seen corresponding path program 1 times [2022-11-23 03:21:11,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:21:11,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121875491] [2022-11-23 03:21:11,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:21:11,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:21:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:21:11,735 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:21:11,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:21:11,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121875491] [2022-11-23 03:21:11,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121875491] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:21:11,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517921181] [2022-11-23 03:21:11,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:21:11,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:21:11,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:21:11,739 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:21:11,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 03:21:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:21:11,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 03:21:11,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:21:11,924 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:21:11,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:21:11,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517921181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:21:11,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:21:11,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-23 03:21:11,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26429913] [2022-11-23 03:21:11,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:21:11,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:21:11,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:21:11,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:21:11,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:21:11,947 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 260 [2022-11-23 03:21:11,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 51 transitions, 369 flow. Second operand has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:11,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:21:11,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 260 [2022-11-23 03:21:11,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:21:12,116 INFO L130 PetriNetUnfolder]: 327/678 cut-off events. [2022-11-23 03:21:12,116 INFO L131 PetriNetUnfolder]: For 1338/1344 co-relation queries the response was YES. [2022-11-23 03:21:12,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2313 conditions, 678 events. 327/678 cut-off events. For 1338/1344 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2682 event pairs, 78 based on Foata normal form. 22/696 useless extension candidates. Maximal degree in co-relation 2296. Up to 399 conditions per place. [2022-11-23 03:21:12,121 INFO L137 encePairwiseOnDemand]: 257/260 looper letters, 49 selfloop transitions, 2 changer transitions 6/70 dead transitions. [2022-11-23 03:21:12,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 70 transitions, 565 flow [2022-11-23 03:21:12,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:21:12,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 03:21:12,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 590 transitions. [2022-11-23 03:21:12,124 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5673076923076923 [2022-11-23 03:21:12,124 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 590 transitions. [2022-11-23 03:21:12,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 590 transitions. [2022-11-23 03:21:12,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:21:12,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 590 transitions. [2022-11-23 03:21:12,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:12,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 260.0) internal successors, (1300), 5 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:12,129 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 260.0) internal successors, (1300), 5 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:12,129 INFO L175 Difference]: Start difference. First operand has 65 places, 51 transitions, 369 flow. Second operand 4 states and 590 transitions. [2022-11-23 03:21:12,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 70 transitions, 565 flow [2022-11-23 03:21:12,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 70 transitions, 560 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 03:21:12,134 INFO L231 Difference]: Finished difference. Result has 66 places, 49 transitions, 348 flow [2022-11-23 03:21:12,135 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=348, PETRI_PLACES=66, PETRI_TRANSITIONS=49} [2022-11-23 03:21:12,136 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 28 predicate places. [2022-11-23 03:21:12,136 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 49 transitions, 348 flow [2022-11-23 03:21:12,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:12,137 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:21:12,137 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:21:12,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 03:21:12,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-23 03:21:12,342 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 03:21:12,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:21:12,343 INFO L85 PathProgramCache]: Analyzing trace with hash -777016051, now seen corresponding path program 2 times [2022-11-23 03:21:12,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:21:12,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576507395] [2022-11-23 03:21:12,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:21:12,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:21:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:21:12,455 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 03:21:12,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:21:12,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576507395] [2022-11-23 03:21:12,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576507395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:21:12,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:21:12,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:21:12,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433734246] [2022-11-23 03:21:12,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:21:12,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:21:12,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:21:12,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:21:12,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:21:12,492 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 260 [2022-11-23 03:21:12,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 49 transitions, 348 flow. Second operand has 5 states, 5 states have (on average 133.4) internal successors, (667), 5 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:12,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:21:12,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 260 [2022-11-23 03:21:12,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:21:12,716 INFO L130 PetriNetUnfolder]: 397/794 cut-off events. [2022-11-23 03:21:12,717 INFO L131 PetriNetUnfolder]: For 1341/1341 co-relation queries the response was YES. [2022-11-23 03:21:12,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2700 conditions, 794 events. 397/794 cut-off events. For 1341/1341 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3125 event pairs, 83 based on Foata normal form. 8/802 useless extension candidates. Maximal degree in co-relation 2682. Up to 292 conditions per place. [2022-11-23 03:21:12,722 INFO L137 encePairwiseOnDemand]: 252/260 looper letters, 58 selfloop transitions, 15 changer transitions 8/83 dead transitions. [2022-11-23 03:21:12,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 83 transitions, 641 flow [2022-11-23 03:21:12,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:21:12,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 03:21:12,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 837 transitions. [2022-11-23 03:21:12,725 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5365384615384615 [2022-11-23 03:21:12,725 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 837 transitions. [2022-11-23 03:21:12,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 837 transitions. [2022-11-23 03:21:12,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:21:12,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 837 transitions. [2022-11-23 03:21:12,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 139.5) internal successors, (837), 6 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:12,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:12,732 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:12,732 INFO L175 Difference]: Start difference. First operand has 66 places, 49 transitions, 348 flow. Second operand 6 states and 837 transitions. [2022-11-23 03:21:12,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 83 transitions, 641 flow [2022-11-23 03:21:12,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 83 transitions, 632 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:21:12,738 INFO L231 Difference]: Finished difference. Result has 70 places, 49 transitions, 384 flow [2022-11-23 03:21:12,738 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=384, PETRI_PLACES=70, PETRI_TRANSITIONS=49} [2022-11-23 03:21:12,739 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 32 predicate places. [2022-11-23 03:21:12,739 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 49 transitions, 384 flow [2022-11-23 03:21:12,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 133.4) internal successors, (667), 5 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:12,740 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:21:12,740 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:21:12,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 03:21:12,740 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-23 03:21:12,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:21:12,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1269894855, now seen corresponding path program 3 times [2022-11-23 03:21:12,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:21:12,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286744035] [2022-11-23 03:21:12,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:21:12,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:21:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:21:12,901 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 03:21:12,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:21:12,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286744035] [2022-11-23 03:21:12,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286744035] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:21:12,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087781865] [2022-11-23 03:21:12,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 03:21:12,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:21:12,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:21:12,903 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:21:12,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 03:21:13,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-23 03:21:13,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:21:13,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 03:21:13,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:21:13,136 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 03:21:13,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:21:13,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087781865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:21:13,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:21:13,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2022-11-23 03:21:13,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376355769] [2022-11-23 03:21:13,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:21:13,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:21:13,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:21:13,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:21:13,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-23 03:21:13,171 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 260 [2022-11-23 03:21:13,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 49 transitions, 384 flow. Second operand has 5 states, 5 states have (on average 134.8) internal successors, (674), 5 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:13,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:21:13,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 260 [2022-11-23 03:21:13,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:21:13,351 INFO L130 PetriNetUnfolder]: 307/647 cut-off events. [2022-11-23 03:21:13,351 INFO L131 PetriNetUnfolder]: For 1283/1283 co-relation queries the response was YES. [2022-11-23 03:21:13,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2304 conditions, 647 events. 307/647 cut-off events. For 1283/1283 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2453 event pairs, 85 based on Foata normal form. 10/655 useless extension candidates. Maximal degree in co-relation 2285. Up to 246 conditions per place. [2022-11-23 03:21:13,354 INFO L137 encePairwiseOnDemand]: 254/260 looper letters, 0 selfloop transitions, 0 changer transitions 69/69 dead transitions. [2022-11-23 03:21:13,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 69 transitions, 564 flow [2022-11-23 03:21:13,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:21:13,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 03:21:13,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 825 transitions. [2022-11-23 03:21:13,357 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5288461538461539 [2022-11-23 03:21:13,358 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 825 transitions. [2022-11-23 03:21:13,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 825 transitions. [2022-11-23 03:21:13,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:21:13,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 825 transitions. [2022-11-23 03:21:13,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 137.5) internal successors, (825), 6 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:13,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:13,364 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:13,365 INFO L175 Difference]: Start difference. First operand has 70 places, 49 transitions, 384 flow. Second operand 6 states and 825 transitions. [2022-11-23 03:21:13,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 69 transitions, 564 flow [2022-11-23 03:21:13,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 69 transitions, 531 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-23 03:21:13,371 INFO L231 Difference]: Finished difference. Result has 68 places, 0 transitions, 0 flow [2022-11-23 03:21:13,371 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=68, PETRI_TRANSITIONS=0} [2022-11-23 03:21:13,371 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 30 predicate places. [2022-11-23 03:21:13,372 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 0 transitions, 0 flow [2022-11-23 03:21:13,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 134.8) internal successors, (674), 5 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:21:13,375 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2022-11-23 03:21:13,375 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-11-23 03:21:13,375 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-23 03:21:13,376 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-23 03:21:13,376 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-23 03:21:13,376 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-23 03:21:13,376 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-23 03:21:13,376 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-23 03:21:13,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2022-11-23 03:21:13,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2022-11-23 03:21:13,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-23 03:21:13,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-23 03:21:13,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-23 03:21:13,378 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-11-23 03:21:13,378 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-23 03:21:13,378 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-23 03:21:13,378 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-23 03:21:13,378 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-23 03:21:13,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 03:21:13,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-23 03:21:13,591 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:21:13,598 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-23 03:21:13,598 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 03:21:13,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:21:13 BasicIcfg [2022-11-23 03:21:13,602 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 03:21:13,603 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 03:21:13,603 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 03:21:13,603 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 03:21:13,604 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:20:56" (3/4) ... [2022-11-23 03:21:13,608 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 03:21:13,614 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-23 03:21:13,614 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-23 03:21:13,620 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-23 03:21:13,621 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-23 03:21:13,621 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-23 03:21:13,621 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 03:21:13,667 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/witness.graphml [2022-11-23 03:21:13,667 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 03:21:13,688 INFO L158 Benchmark]: Toolchain (without parser) took 18577.94ms. Allocated memory was 115.3MB in the beginning and 220.2MB in the end (delta: 104.9MB). Free memory was 82.3MB in the beginning and 58.8MB in the end (delta: 23.5MB). Peak memory consumption was 129.2MB. Max. memory is 16.1GB. [2022-11-23 03:21:13,689 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 115.3MB. Free memory was 84.7MB in the beginning and 84.7MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:21:13,689 INFO L158 Benchmark]: CACSL2BoogieTranslator took 617.55ms. Allocated memory is still 115.3MB. Free memory was 82.3MB in the beginning and 55.9MB in the end (delta: 26.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-23 03:21:13,690 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.50ms. Allocated memory is still 115.3MB. Free memory was 55.9MB in the beginning and 53.3MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 03:21:13,690 INFO L158 Benchmark]: Boogie Preprocessor took 38.71ms. Allocated memory is still 115.3MB. Free memory was 53.3MB in the beginning and 51.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:21:13,690 INFO L158 Benchmark]: RCFGBuilder took 636.18ms. Allocated memory was 115.3MB in the beginning and 151.0MB in the end (delta: 35.7MB). Free memory was 51.7MB in the beginning and 110.9MB in the end (delta: -59.2MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. [2022-11-23 03:21:13,691 INFO L158 Benchmark]: TraceAbstraction took 17167.12ms. Allocated memory was 151.0MB in the beginning and 220.2MB in the end (delta: 69.2MB). Free memory was 110.0MB in the beginning and 60.8MB in the end (delta: 49.1MB). Peak memory consumption was 118.0MB. Max. memory is 16.1GB. [2022-11-23 03:21:13,691 INFO L158 Benchmark]: Witness Printer took 64.57ms. Allocated memory is still 220.2MB. Free memory was 60.8MB in the beginning and 58.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:21:13,695 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 115.3MB. Free memory was 84.7MB in the beginning and 84.7MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 617.55ms. Allocated memory is still 115.3MB. Free memory was 82.3MB in the beginning and 55.9MB in the end (delta: 26.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.50ms. Allocated memory is still 115.3MB. Free memory was 55.9MB in the beginning and 53.3MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.71ms. Allocated memory is still 115.3MB. Free memory was 53.3MB in the beginning and 51.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 636.18ms. Allocated memory was 115.3MB in the beginning and 151.0MB in the end (delta: 35.7MB). Free memory was 51.7MB in the beginning and 110.9MB in the end (delta: -59.2MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. * TraceAbstraction took 17167.12ms. Allocated memory was 151.0MB in the beginning and 220.2MB in the end (delta: 69.2MB). Free memory was 110.0MB in the beginning and 60.8MB in the end (delta: 49.1MB). Peak memory consumption was 118.0MB. Max. memory is 16.1GB. * Witness Printer took 64.57ms. Allocated memory is still 220.2MB. Free memory was 60.8MB in the beginning and 58.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.8s, 131 PlacesBefore, 38 PlacesAfterwards, 132 TransitionsBefore, 36 TransitionsAfterwards, 3074 CoEnabledTransitionPairs, 7 FixpointIterations, 53 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 3 ChoiceCompositions, 110 TotalNumberOfCompositions, 6342 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3702, independent: 3503, independent conditional: 0, independent unconditional: 3503, dependent: 199, dependent conditional: 0, dependent unconditional: 199, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2005, independent: 1956, independent conditional: 0, independent unconditional: 1956, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2005, independent: 1936, independent conditional: 0, independent unconditional: 1936, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 69, independent: 20, independent conditional: 0, independent unconditional: 20, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 172, independent: 53, independent conditional: 0, independent unconditional: 53, dependent: 119, dependent conditional: 0, dependent unconditional: 119, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3702, independent: 1547, independent conditional: 0, independent unconditional: 1547, dependent: 150, dependent conditional: 0, dependent unconditional: 150, unknown: 2005, unknown conditional: 0, unknown unconditional: 2005] , Statistics on independence cache: Total cache size (in pairs): 232, Positive cache size: 210, Positive conditional cache size: 0, Positive unconditional cache size: 210, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 882]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 882]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 885]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 885]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 897]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 897]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 900]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 900]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 202 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 16.9s, OverallIterations: 15, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 989 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 797 mSDsluCounter, 239 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 180 mSDsCounter, 146 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1747 IncrementalHoareTripleChecker+Invalid, 1893 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 146 mSolverCounterUnsat, 59 mSDtfsCounter, 1747 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 165 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=450occurred in iteration=9, InterpolantAutomatonStates: 72, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 326 NumberOfCodeBlocks, 326 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 325 ConstructedInterpolants, 0 QuantifiedInterpolants, 791 SizeOfPredicates, 9 NumberOfNonLiveVariables, 997 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 20 InterpolantComputations, 14 PerfectInterpolantSequences, 59/79 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-23 03:21:13,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c29e56f6-a9a5-48f6-b608-92baaf8f5fdc/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE