./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 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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-2329fc7 [2022-12-13 14:10:52,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:10:52,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:10:52,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:10:52,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:10:52,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:10:52,813 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:10:52,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:10:52,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:10:52,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:10:52,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:10:52,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:10:52,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:10:52,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:10:52,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:10:52,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:10:52,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:10:52,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:10:52,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:10:52,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:10:52,828 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:10:52,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:10:52,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:10:52,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:10:52,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:10:52,835 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:10:52,836 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:10:52,836 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:10:52,837 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:10:52,838 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:10:52,838 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:10:52,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:10:52,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:10:52,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:10:52,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:10:52,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:10:52,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:10:52,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:10:52,843 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:10:52,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:10:52,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:10:52,845 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 14:10:52,865 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:10:52,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:10:52,866 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:10:52,866 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:10:52,867 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:10:52,867 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:10:52,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:10:52,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:10:52,868 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:10:52,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:10:52,868 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:10:52,868 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 14:10:52,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:10:52,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:10:52,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:10:52,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:10:52,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:10:52,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:10:52,869 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 14:10:52,869 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:10:52,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:10:52,870 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:10:52,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:10:52,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:10:52,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:10:52,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:10:52,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:10:52,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:10:52,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:10:52,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:10:52,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:10:52,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:10:52,871 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:10:52,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:10:52,871 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:10:52,872 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:10:52,872 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:10:52,872 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_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 [2022-12-13 14:10:53,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:10:53,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:10:53,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:10:53,076 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:10:53,076 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:10:53,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2022-12-13 14:10:55,662 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:10:55,855 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:10:55,856 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2022-12-13 14:10:55,868 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/data/22daf34e6/0563eb61a50c4024b2233c50c8eb76d6/FLAGca39ba312 [2022-12-13 14:10:55,879 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/data/22daf34e6/0563eb61a50c4024b2233c50c8eb76d6 [2022-12-13 14:10:55,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:10:55,882 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:10:55,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:10:55,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:10:55,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:10:55,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:10:55" (1/1) ... [2022-12-13 14:10:55,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48eac39b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:10:55, skipping insertion in model container [2022-12-13 14:10:55,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:10:55" (1/1) ... [2022-12-13 14:10:55,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:10:55,926 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:10:56,199 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_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2022-12-13 14:10:56,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:10:56,210 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:10:56,239 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_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2022-12-13 14:10:56,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:10:56,273 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:10:56,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:10:56 WrapperNode [2022-12-13 14:10:56,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:10:56,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:10:56,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:10:56,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:10:56,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:10:56" (1/1) ... [2022-12-13 14:10:56,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:10:56" (1/1) ... [2022-12-13 14:10:56,306 INFO L138 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2022-12-13 14:10:56,306 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:10:56,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:10:56,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:10:56,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:10:56,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:10:56" (1/1) ... [2022-12-13 14:10:56,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:10:56" (1/1) ... [2022-12-13 14:10:56,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:10:56" (1/1) ... [2022-12-13 14:10:56,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:10:56" (1/1) ... [2022-12-13 14:10:56,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:10:56" (1/1) ... [2022-12-13 14:10:56,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:10:56" (1/1) ... [2022-12-13 14:10:56,327 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:10:56" (1/1) ... [2022-12-13 14:10:56,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:10:56" (1/1) ... [2022-12-13 14:10:56,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:10:56,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:10:56,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:10:56,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:10:56,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:10:56" (1/1) ... [2022-12-13 14:10:56,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:10:56,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:10:56,355 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:10:56,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:10:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 14:10:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 14:10:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 14:10:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 14:10:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 14:10:56,389 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 14:10:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 14:10:56,390 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 14:10:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 14:10:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 14:10:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:10:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 14:10:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:10:56,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:10:56,391 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 14:10:56,489 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:10:56,491 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:10:56,708 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:10:56,714 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:10:56,714 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 14:10:56,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:10:56 BoogieIcfgContainer [2022-12-13 14:10:56,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:10:56,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:10:56,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:10:56,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:10:56,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:10:55" (1/3) ... [2022-12-13 14:10:56,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e464b5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:10:56, skipping insertion in model container [2022-12-13 14:10:56,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:10:56" (2/3) ... [2022-12-13 14:10:56,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e464b5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:10:56, skipping insertion in model container [2022-12-13 14:10:56,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:10:56" (3/3) ... [2022-12-13 14:10:56,728 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2022-12-13 14:10:56,735 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 14:10:56,743 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:10:56,743 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-13 14:10:56,743 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 14:10:56,805 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 14:10:56,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 150 transitions, 316 flow [2022-12-13 14:10:56,904 INFO L130 PetriNetUnfolder]: 10/148 cut-off events. [2022-12-13 14:10:56,905 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 14:10:56,910 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 197 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. [2022-12-13 14:10:56,910 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 150 transitions, 316 flow [2022-12-13 14:10:56,915 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 132 transitions, 273 flow [2022-12-13 14:10:56,918 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 14:10:56,929 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 132 transitions, 273 flow [2022-12-13 14:10:56,932 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 132 transitions, 273 flow [2022-12-13 14:10:56,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 132 transitions, 273 flow [2022-12-13 14:10:56,964 INFO L130 PetriNetUnfolder]: 8/132 cut-off events. [2022-12-13 14:10:56,965 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 14:10:56,966 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 179 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. [2022-12-13 14:10:56,969 INFO L119 LiptonReduction]: Number of co-enabled transitions 3074 [2022-12-13 14:11:01,631 INFO L134 LiptonReduction]: Checked pairs total: 6562 [2022-12-13 14:11:01,632 INFO L136 LiptonReduction]: Total number of compositions: 109 [2022-12-13 14:11:01,644 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:11:01,650 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;@6ea0315a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:11:01,650 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-12-13 14:11:01,654 INFO L130 PetriNetUnfolder]: 2/15 cut-off events. [2022-12-13 14:11:01,654 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 14:11:01,654 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:11:01,655 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 14:11:01,655 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 14:11:01,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:11:01,659 INFO L85 PathProgramCache]: Analyzing trace with hash -953427256, now seen corresponding path program 1 times [2022-12-13 14:11:01,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:11:01,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797588080] [2022-12-13 14:11:01,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:11:01,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:11:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:11:01,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:11:01,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:11:01,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797588080] [2022-12-13 14:11:01,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797588080] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:11:01,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:11:01,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:11:01,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127862542] [2022-12-13 14:11:01,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:11:01,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 14:11:01,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:11:01,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 14:11:01,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 14:11:01,849 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 259 [2022-12-13 14:11:01,851 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) [2022-12-13 14:11:01,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:11:01,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 259 [2022-12-13 14:11:01,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:11:01,956 INFO L130 PetriNetUnfolder]: 345/599 cut-off events. [2022-12-13 14:11:01,956 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-12-13 14:11:01,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1192 conditions, 599 events. 345/599 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2644 event pairs, 261 based on Foata normal form. 24/419 useless extension candidates. Maximal degree in co-relation 1079. Up to 561 conditions per place. [2022-12-13 14:11:01,960 INFO L137 encePairwiseOnDemand]: 258/259 looper letters, 28 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2022-12-13 14:11:01,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 135 flow [2022-12-13 14:11:01,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 14:11:01,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 14:11:01,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 309 transitions. [2022-12-13 14:11:01,973 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5965250965250966 [2022-12-13 14:11:01,974 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 309 transitions. [2022-12-13 14:11:01,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 309 transitions. [2022-12-13 14:11:01,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:11:01,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 309 transitions. [2022-12-13 14:11:01,980 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) [2022-12-13 14:11:01,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:01,986 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:01,988 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 81 flow. Second operand 2 states and 309 transitions. [2022-12-13 14:11:01,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 135 flow [2022-12-13 14:11:01,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 35 transitions, 130 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 14:11:01,992 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 74 flow [2022-12-13 14:11:01,994 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, 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} [2022-12-13 14:11:01,997 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, -2 predicate places. [2022-12-13 14:11:01,998 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 74 flow [2022-12-13 14:11:01,998 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) [2022-12-13 14:11:01,998 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:11:01,998 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:11:01,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 14:11:01,998 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 14:11:01,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:11:01,999 INFO L85 PathProgramCache]: Analyzing trace with hash 508425528, now seen corresponding path program 1 times [2022-12-13 14:11:01,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:11:01,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158916958] [2022-12-13 14:11:01,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:11:02,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:11:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:11:02,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:11:02,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:11:02,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158916958] [2022-12-13 14:11:02,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158916958] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:11:02,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:11:02,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:11:02,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903091954] [2022-12-13 14:11:02,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:11:02,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:11:02,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:11:02,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:11:02,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:11:02,126 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 259 [2022-12-13 14:11:02,127 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) [2022-12-13 14:11:02,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:11:02,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 259 [2022-12-13 14:11:02,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:11:02,282 INFO L130 PetriNetUnfolder]: 696/1188 cut-off events. [2022-12-13 14:11:02,282 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 14:11:02,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2333 conditions, 1188 events. 696/1188 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5590 event pairs, 71 based on Foata normal form. 12/823 useless extension candidates. Maximal degree in co-relation 2330. Up to 797 conditions per place. [2022-12-13 14:11:02,287 INFO L137 encePairwiseOnDemand]: 248/259 looper letters, 68 selfloop transitions, 12 changer transitions 3/86 dead transitions. [2022-12-13 14:11:02,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 86 transitions, 349 flow [2022-12-13 14:11:02,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:11:02,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 14:11:02,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 733 transitions. [2022-12-13 14:11:02,290 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.566023166023166 [2022-12-13 14:11:02,290 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 733 transitions. [2022-12-13 14:11:02,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 733 transitions. [2022-12-13 14:11:02,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:11:02,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 733 transitions. [2022-12-13 14:11:02,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:02,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:02,295 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:02,295 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 74 flow. Second operand 5 states and 733 transitions. [2022-12-13 14:11:02,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 86 transitions, 349 flow [2022-12-13 14:11:02,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 86 transitions, 349 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 14:11:02,297 INFO L231 Difference]: Finished difference. Result has 44 places, 46 transitions, 174 flow [2022-12-13 14:11:02,297 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, 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=174, PETRI_PLACES=44, PETRI_TRANSITIONS=46} [2022-12-13 14:11:02,297 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 6 predicate places. [2022-12-13 14:11:02,297 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 46 transitions, 174 flow [2022-12-13 14:11:02,298 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) [2022-12-13 14:11:02,298 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:11:02,298 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:11:02,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 14:11:02,298 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 14:11:02,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:11:02,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1418673590, now seen corresponding path program 1 times [2022-12-13 14:11:02,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:11:02,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424389395] [2022-12-13 14:11:02,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:11:02,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:11:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:11:02,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:11:02,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:11:02,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424389395] [2022-12-13 14:11:02,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424389395] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:11:02,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:11:02,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:11:02,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885312951] [2022-12-13 14:11:02,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:11:02,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:11:02,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:11:02,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:11:02,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:11:02,355 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 259 [2022-12-13 14:11:02,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 46 transitions, 174 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) [2022-12-13 14:11:02,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:11:02,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 259 [2022-12-13 14:11:02,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:11:02,490 INFO L130 PetriNetUnfolder]: 551/1048 cut-off events. [2022-12-13 14:11:02,491 INFO L131 PetriNetUnfolder]: For 324/332 co-relation queries the response was YES. [2022-12-13 14:11:02,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2624 conditions, 1048 events. 551/1048 cut-off events. For 324/332 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5359 event pairs, 186 based on Foata normal form. 4/796 useless extension candidates. Maximal degree in co-relation 2617. Up to 748 conditions per place. [2022-12-13 14:11:02,496 INFO L137 encePairwiseOnDemand]: 254/259 looper letters, 52 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2022-12-13 14:11:02,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 65 transitions, 340 flow [2022-12-13 14:11:02,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:11:02,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:11:02,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions. [2022-12-13 14:11:02,497 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5881595881595881 [2022-12-13 14:11:02,497 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 457 transitions. [2022-12-13 14:11:02,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 457 transitions. [2022-12-13 14:11:02,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:11:02,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 457 transitions. [2022-12-13 14:11:02,498 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) [2022-12-13 14:11:02,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:02,500 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:02,500 INFO L175 Difference]: Start difference. First operand has 44 places, 46 transitions, 174 flow. Second operand 3 states and 457 transitions. [2022-12-13 14:11:02,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 65 transitions, 340 flow [2022-12-13 14:11:02,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 65 transitions, 340 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 14:11:02,503 INFO L231 Difference]: Finished difference. Result has 47 places, 48 transitions, 209 flow [2022-12-13 14:11:02,503 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=174, 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=209, PETRI_PLACES=47, PETRI_TRANSITIONS=48} [2022-12-13 14:11:02,504 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 9 predicate places. [2022-12-13 14:11:02,504 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 48 transitions, 209 flow [2022-12-13 14:11:02,504 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) [2022-12-13 14:11:02,504 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:11:02,504 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 14:11:02,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 14:11:02,504 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 14:11:02,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:11:02,505 INFO L85 PathProgramCache]: Analyzing trace with hash 642665456, now seen corresponding path program 1 times [2022-12-13 14:11:02,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:11:02,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937556304] [2022-12-13 14:11:02,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:11:02,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:11:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:11:02,571 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:11:02,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:11:02,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937556304] [2022-12-13 14:11:02,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937556304] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:11:02,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982874778] [2022-12-13 14:11:02,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:11:02,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:11:02,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:11:02,573 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:11:02,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 14:11:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:11:02,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:11:02,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:11:02,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:11:02,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:11:02,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982874778] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:11:02,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:11:02,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-12-13 14:11:02,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700023245] [2022-12-13 14:11:02,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:11:02,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:11:02,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:11:02,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:11:02,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:11:02,711 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 259 [2022-12-13 14:11:02,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 48 transitions, 209 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) [2022-12-13 14:11:02,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:11:02,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 259 [2022-12-13 14:11:02,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:11:02,974 INFO L130 PetriNetUnfolder]: 935/1576 cut-off events. [2022-12-13 14:11:02,975 INFO L131 PetriNetUnfolder]: For 741/741 co-relation queries the response was YES. [2022-12-13 14:11:02,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4266 conditions, 1576 events. 935/1576 cut-off events. For 741/741 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6721 event pairs, 169 based on Foata normal form. 44/1278 useless extension candidates. Maximal degree in co-relation 4257. Up to 657 conditions per place. [2022-12-13 14:11:02,981 INFO L137 encePairwiseOnDemand]: 245/259 looper letters, 90 selfloop transitions, 32 changer transitions 7/131 dead transitions. [2022-12-13 14:11:02,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 131 transitions, 744 flow [2022-12-13 14:11:02,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:11:02,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 14:11:02,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1024 transitions. [2022-12-13 14:11:02,983 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5648097076668506 [2022-12-13 14:11:02,983 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1024 transitions. [2022-12-13 14:11:02,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1024 transitions. [2022-12-13 14:11:02,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:11:02,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1024 transitions. [2022-12-13 14:11:02,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 146.28571428571428) internal successors, (1024), 7 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:02,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 259.0) internal successors, (2072), 8 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:02,988 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 259.0) internal successors, (2072), 8 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:02,988 INFO L175 Difference]: Start difference. First operand has 47 places, 48 transitions, 209 flow. Second operand 7 states and 1024 transitions. [2022-12-13 14:11:02,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 131 transitions, 744 flow [2022-12-13 14:11:02,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 131 transitions, 740 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:11:02,993 INFO L231 Difference]: Finished difference. Result has 56 places, 66 transitions, 434 flow [2022-12-13 14:11:02,994 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=434, PETRI_PLACES=56, PETRI_TRANSITIONS=66} [2022-12-13 14:11:02,994 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 18 predicate places. [2022-12-13 14:11:02,994 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 66 transitions, 434 flow [2022-12-13 14:11:02,995 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) [2022-12-13 14:11:02,995 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:11:02,995 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:11:03,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 14:11:03,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:11:03,196 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 14:11:03,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:11:03,196 INFO L85 PathProgramCache]: Analyzing trace with hash -443355126, now seen corresponding path program 1 times [2022-12-13 14:11:03,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:11:03,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587178130] [2022-12-13 14:11:03,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:11:03,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:11:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:11:03,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:11:03,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:11:03,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587178130] [2022-12-13 14:11:03,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587178130] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:11:03,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:11:03,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:11:03,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627409177] [2022-12-13 14:11:03,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:11:03,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:11:03,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:11:03,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:11:03,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:11:03,304 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 259 [2022-12-13 14:11:03,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 66 transitions, 434 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:03,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:11:03,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 259 [2022-12-13 14:11:03,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:11:03,414 INFO L130 PetriNetUnfolder]: 346/737 cut-off events. [2022-12-13 14:11:03,414 INFO L131 PetriNetUnfolder]: For 427/427 co-relation queries the response was YES. [2022-12-13 14:11:03,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2077 conditions, 737 events. 346/737 cut-off events. For 427/427 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3443 event pairs, 102 based on Foata normal form. 52/721 useless extension candidates. Maximal degree in co-relation 2065. Up to 388 conditions per place. [2022-12-13 14:11:03,418 INFO L137 encePairwiseOnDemand]: 247/259 looper letters, 30 selfloop transitions, 16 changer transitions 0/54 dead transitions. [2022-12-13 14:11:03,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 358 flow [2022-12-13 14:11:03,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:11:03,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:11:03,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2022-12-13 14:11:03,419 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5572715572715573 [2022-12-13 14:11:03,419 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 433 transitions. [2022-12-13 14:11:03,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions. [2022-12-13 14:11:03,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:11:03,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions. [2022-12-13 14:11:03,420 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) [2022-12-13 14:11:03,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:03,422 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:03,422 INFO L175 Difference]: Start difference. First operand has 56 places, 66 transitions, 434 flow. Second operand 3 states and 433 transitions. [2022-12-13 14:11:03,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 358 flow [2022-12-13 14:11:03,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 54 transitions, 325 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-12-13 14:11:03,427 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 240 flow [2022-12-13 14:11:03,427 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2022-12-13 14:11:03,428 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 16 predicate places. [2022-12-13 14:11:03,428 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 240 flow [2022-12-13 14:11:03,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:03,429 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:11:03,429 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:11:03,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 14:11:03,429 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 14:11:03,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:11:03,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1597130464, now seen corresponding path program 1 times [2022-12-13 14:11:03,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:11:03,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892540121] [2022-12-13 14:11:03,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:11:03,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:11:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:11:03,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:11:03,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:11:03,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892540121] [2022-12-13 14:11:03,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892540121] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:11:03,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:11:03,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:11:03,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018962882] [2022-12-13 14:11:03,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:11:03,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:11:03,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:11:03,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:11:03,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:11:03,532 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 259 [2022-12-13 14:11:03,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 130.8) internal successors, (654), 5 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:03,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:11:03,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 259 [2022-12-13 14:11:03,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:11:03,686 INFO L130 PetriNetUnfolder]: 389/798 cut-off events. [2022-12-13 14:11:03,687 INFO L131 PetriNetUnfolder]: For 348/348 co-relation queries the response was YES. [2022-12-13 14:11:03,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2332 conditions, 798 events. 389/798 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3563 event pairs, 79 based on Foata normal form. 12/766 useless extension candidates. Maximal degree in co-relation 2320. Up to 311 conditions per place. [2022-12-13 14:11:03,689 INFO L137 encePairwiseOnDemand]: 248/259 looper letters, 60 selfloop transitions, 12 changer transitions 6/80 dead transitions. [2022-12-13 14:11:03,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 80 transitions, 504 flow [2022-12-13 14:11:03,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 14:11:03,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 14:11:03,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 843 transitions. [2022-12-13 14:11:03,692 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5424710424710425 [2022-12-13 14:11:03,692 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 843 transitions. [2022-12-13 14:11:03,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 843 transitions. [2022-12-13 14:11:03,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:11:03,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 843 transitions. [2022-12-13 14:11:03,694 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) [2022-12-13 14:11:03,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 259.0) internal successors, (1813), 7 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:03,697 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 259.0) internal successors, (1813), 7 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:03,697 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 240 flow. Second operand 6 states and 843 transitions. [2022-12-13 14:11:03,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 80 transitions, 504 flow [2022-12-13 14:11:03,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 80 transitions, 470 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-13 14:11:03,700 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 267 flow [2022-12-13 14:11:03,701 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=213, 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=267, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2022-12-13 14:11:03,701 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 21 predicate places. [2022-12-13 14:11:03,701 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 267 flow [2022-12-13 14:11:03,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 130.8) internal successors, (654), 5 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:03,702 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:11:03,702 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:11:03,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 14:11:03,702 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 14:11:03,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:11:03,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1967208257, now seen corresponding path program 1 times [2022-12-13 14:11:03,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:11:03,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038159130] [2022-12-13 14:11:03,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:11:03,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:11:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:11:03,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:11:03,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:11:03,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038159130] [2022-12-13 14:11:03,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038159130] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:11:03,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:11:03,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:11:03,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151251774] [2022-12-13 14:11:03,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:11:03,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:11:03,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:11:03,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:11:03,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:11:03,756 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 259 [2022-12-13 14:11:03,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 267 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) [2022-12-13 14:11:03,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:11:03,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 259 [2022-12-13 14:11:03,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:11:03,851 INFO L130 PetriNetUnfolder]: 334/741 cut-off events. [2022-12-13 14:11:03,852 INFO L131 PetriNetUnfolder]: For 631/635 co-relation queries the response was YES. [2022-12-13 14:11:03,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2123 conditions, 741 events. 334/741 cut-off events. For 631/635 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3506 event pairs, 190 based on Foata normal form. 18/707 useless extension candidates. Maximal degree in co-relation 2110. Up to 496 conditions per place. [2022-12-13 14:11:03,855 INFO L137 encePairwiseOnDemand]: 254/259 looper letters, 49 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2022-12-13 14:11:03,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 62 transitions, 437 flow [2022-12-13 14:11:03,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:11:03,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:11:03,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions. [2022-12-13 14:11:03,856 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5842985842985843 [2022-12-13 14:11:03,856 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions. [2022-12-13 14:11:03,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions. [2022-12-13 14:11:03,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:11:03,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions. [2022-12-13 14:11:03,857 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) [2022-12-13 14:11:03,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:03,858 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:03,858 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 267 flow. Second operand 3 states and 454 transitions. [2022-12-13 14:11:03,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 62 transitions, 437 flow [2022-12-13 14:11:03,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 62 transitions, 415 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-12-13 14:11:03,861 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 266 flow [2022-12-13 14:11:03,861 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=249, 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=266, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2022-12-13 14:11:03,862 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2022-12-13 14:11:03,862 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 266 flow [2022-12-13 14:11:03,862 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) [2022-12-13 14:11:03,862 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:11:03,862 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:11:03,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 14:11:03,862 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 14:11:03,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:11:03,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1451563713, now seen corresponding path program 1 times [2022-12-13 14:11:03,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:11:03,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832805806] [2022-12-13 14:11:03,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:11:03,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:11:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:11:03,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:11:03,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:11:03,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832805806] [2022-12-13 14:11:03,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832805806] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:11:03,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:11:03,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:11:03,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008047471] [2022-12-13 14:11:03,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:11:03,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:11:03,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:11:03,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:11:03,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:11:03,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 259 [2022-12-13 14:11:03,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 266 flow. Second operand has 7 states, 7 states have (on average 126.71428571428571) internal successors, (887), 7 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:03,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:11:03,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 259 [2022-12-13 14:11:03,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:11:04,229 INFO L130 PetriNetUnfolder]: 515/1048 cut-off events. [2022-12-13 14:11:04,229 INFO L131 PetriNetUnfolder]: For 755/755 co-relation queries the response was YES. [2022-12-13 14:11:04,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3151 conditions, 1048 events. 515/1048 cut-off events. For 755/755 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4782 event pairs, 87 based on Foata normal form. 20/1000 useless extension candidates. Maximal degree in co-relation 3137. Up to 299 conditions per place. [2022-12-13 14:11:04,236 INFO L137 encePairwiseOnDemand]: 243/259 looper letters, 77 selfloop transitions, 20 changer transitions 3/102 dead transitions. [2022-12-13 14:11:04,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 102 transitions, 654 flow [2022-12-13 14:11:04,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:11:04,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 14:11:04,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1213 transitions. [2022-12-13 14:11:04,239 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5203775203775204 [2022-12-13 14:11:04,239 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1213 transitions. [2022-12-13 14:11:04,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1213 transitions. [2022-12-13 14:11:04,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:11:04,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1213 transitions. [2022-12-13 14:11:04,243 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) [2022-12-13 14:11:04,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 259.0) internal successors, (2590), 10 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:04,247 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 259.0) internal successors, (2590), 10 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:04,247 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 266 flow. Second operand 9 states and 1213 transitions. [2022-12-13 14:11:04,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 102 transitions, 654 flow [2022-12-13 14:11:04,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 102 transitions, 649 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:11:04,251 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 384 flow [2022-12-13 14:11:04,252 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=264, 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=384, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2022-12-13 14:11:04,252 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 30 predicate places. [2022-12-13 14:11:04,252 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 384 flow [2022-12-13 14:11:04,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.71428571428571) internal successors, (887), 7 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:04,253 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:11:04,253 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:11:04,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 14:11:04,253 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 14:11:04,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:11:04,254 INFO L85 PathProgramCache]: Analyzing trace with hash 273325613, now seen corresponding path program 1 times [2022-12-13 14:11:04,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:11:04,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323352836] [2022-12-13 14:11:04,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:11:04,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:11:04,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:11:04,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:11:04,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:11:04,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323352836] [2022-12-13 14:11:04,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323352836] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:11:04,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279989523] [2022-12-13 14:11:04,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:11:04,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:11:04,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:11:04,348 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:11:04,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 14:11:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:11:04,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 14:11:04,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:11:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:11:04,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:11:04,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:11:04,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279989523] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:11:04,496 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:11:04,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2022-12-13 14:11:04,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104295801] [2022-12-13 14:11:04,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:11:04,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 14:11:04,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:11:04,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 14:11:04,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-12-13 14:11:04,536 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 259 [2022-12-13 14:11:04,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 384 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) [2022-12-13 14:11:04,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:11:04,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 259 [2022-12-13 14:11:04,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:11:04,785 INFO L130 PetriNetUnfolder]: 516/1079 cut-off events. [2022-12-13 14:11:04,785 INFO L131 PetriNetUnfolder]: For 1443/1443 co-relation queries the response was YES. [2022-12-13 14:11:04,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3507 conditions, 1079 events. 516/1079 cut-off events. For 1443/1443 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 5147 event pairs, 77 based on Foata normal form. 58/1069 useless extension candidates. Maximal degree in co-relation 3491. Up to 378 conditions per place. [2022-12-13 14:11:04,790 INFO L137 encePairwiseOnDemand]: 240/259 looper letters, 54 selfloop transitions, 33 changer transitions 3/92 dead transitions. [2022-12-13 14:11:04,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 92 transitions, 658 flow [2022-12-13 14:11:04,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:11:04,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 14:11:04,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1193 transitions. [2022-12-13 14:11:04,792 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5117975117975118 [2022-12-13 14:11:04,793 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1193 transitions. [2022-12-13 14:11:04,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1193 transitions. [2022-12-13 14:11:04,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:11:04,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1193 transitions. [2022-12-13 14:11:04,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 132.55555555555554) internal successors, (1193), 9 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:04,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 259.0) internal successors, (2590), 10 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:04,797 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 259.0) internal successors, (2590), 10 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:04,797 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 384 flow. Second operand 9 states and 1193 transitions. [2022-12-13 14:11:04,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 92 transitions, 658 flow [2022-12-13 14:11:04,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 92 transitions, 645 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 14:11:04,801 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 433 flow [2022-12-13 14:11:04,801 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=336, 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=433, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2022-12-13 14:11:04,801 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 31 predicate places. [2022-12-13 14:11:04,801 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 433 flow [2022-12-13 14:11:04,802 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) [2022-12-13 14:11:04,802 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:11:04,802 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:11:04,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 14:11:05,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:11:05,003 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 14:11:05,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:11:05,003 INFO L85 PathProgramCache]: Analyzing trace with hash 672923916, now seen corresponding path program 1 times [2022-12-13 14:11:05,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:11:05,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799220748] [2022-12-13 14:11:05,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:11:05,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:11:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:11:05,052 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:11:05,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:11:05,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799220748] [2022-12-13 14:11:05,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799220748] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:11:05,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249669514] [2022-12-13 14:11:05,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:11:05,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:11:05,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:11:05,054 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:11:05,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 14:11:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:11:05,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:11:05,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:11:05,147 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:11:05,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:11:05,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249669514] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:11:05,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:11:05,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 14:11:05,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533166141] [2022-12-13 14:11:05,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:11:05,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:11:05,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:11:05,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:11:05,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:11:05,157 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 259 [2022-12-13 14:11:05,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 433 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) [2022-12-13 14:11:05,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:11:05,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 259 [2022-12-13 14:11:05,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:11:05,276 INFO L130 PetriNetUnfolder]: 424/923 cut-off events. [2022-12-13 14:11:05,276 INFO L131 PetriNetUnfolder]: For 1388/1390 co-relation queries the response was YES. [2022-12-13 14:11:05,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3246 conditions, 923 events. 424/923 cut-off events. For 1388/1390 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4355 event pairs, 86 based on Foata normal form. 2/883 useless extension candidates. Maximal degree in co-relation 3229. Up to 606 conditions per place. [2022-12-13 14:11:05,280 INFO L137 encePairwiseOnDemand]: 256/259 looper letters, 58 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2022-12-13 14:11:05,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 73 transitions, 631 flow [2022-12-13 14:11:05,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:11:05,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 14:11:05,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 593 transitions. [2022-12-13 14:11:05,282 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5723938223938224 [2022-12-13 14:11:05,282 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 593 transitions. [2022-12-13 14:11:05,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 593 transitions. [2022-12-13 14:11:05,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:11:05,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 593 transitions. [2022-12-13 14:11:05,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 148.25) internal successors, (593), 4 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:05,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:05,284 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:05,284 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 433 flow. Second operand 4 states and 593 transitions. [2022-12-13 14:11:05,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 73 transitions, 631 flow [2022-12-13 14:11:05,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 73 transitions, 554 flow, removed 4 selfloop flow, removed 8 redundant places. [2022-12-13 14:11:05,289 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 349 flow [2022-12-13 14:11:05,289 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=349, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2022-12-13 14:11:05,289 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 25 predicate places. [2022-12-13 14:11:05,289 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 349 flow [2022-12-13 14:11:05,290 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) [2022-12-13 14:11:05,290 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:11:05,290 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:11:05,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 14:11:05,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 14:11:05,491 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 14:11:05,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:11:05,491 INFO L85 PathProgramCache]: Analyzing trace with hash -911685773, now seen corresponding path program 1 times [2022-12-13 14:11:05,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:11:05,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555538316] [2022-12-13 14:11:05,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:11:05,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:11:05,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:11:05,528 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:11:05,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:11:05,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555538316] [2022-12-13 14:11:05,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555538316] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:11:05,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:11:05,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:11:05,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133289897] [2022-12-13 14:11:05,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:11:05,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:11:05,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:11:05,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:11:05,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:11:05,536 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 259 [2022-12-13 14:11:05,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 349 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) [2022-12-13 14:11:05,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:11:05,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 259 [2022-12-13 14:11:05,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:11:05,651 INFO L130 PetriNetUnfolder]: 383/826 cut-off events. [2022-12-13 14:11:05,651 INFO L131 PetriNetUnfolder]: For 1018/1020 co-relation queries the response was YES. [2022-12-13 14:11:05,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2592 conditions, 826 events. 383/826 cut-off events. For 1018/1020 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3706 event pairs, 104 based on Foata normal form. 2/812 useless extension candidates. Maximal degree in co-relation 2576. Up to 491 conditions per place. [2022-12-13 14:11:05,654 INFO L137 encePairwiseOnDemand]: 255/259 looper letters, 42 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2022-12-13 14:11:05,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 60 transitions, 465 flow [2022-12-13 14:11:05,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:11:05,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:11:05,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2022-12-13 14:11:05,656 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5688545688545689 [2022-12-13 14:11:05,656 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2022-12-13 14:11:05,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2022-12-13 14:11:05,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:11:05,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2022-12-13 14:11:05,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:05,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:05,657 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:05,658 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 349 flow. Second operand 3 states and 442 transitions. [2022-12-13 14:11:05,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 60 transitions, 465 flow [2022-12-13 14:11:05,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 60 transitions, 462 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:11:05,661 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 346 flow [2022-12-13 14:11:05,661 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=60, 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=346, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2022-12-13 14:11:05,661 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 25 predicate places. [2022-12-13 14:11:05,661 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 346 flow [2022-12-13 14:11:05,662 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) [2022-12-13 14:11:05,662 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:11:05,662 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:11:05,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 14:11:05,662 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 14:11:05,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:11:05,663 INFO L85 PathProgramCache]: Analyzing trace with hash -917029432, now seen corresponding path program 1 times [2022-12-13 14:11:05,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:11:05,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94169623] [2022-12-13 14:11:05,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:11:05,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:11:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:11:05,702 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:11:05,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:11:05,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94169623] [2022-12-13 14:11:05,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94169623] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:11:05,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:11:05,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:11:05,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706745431] [2022-12-13 14:11:05,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:11:05,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:11:05,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:11:05,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:11:05,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:11:05,708 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 259 [2022-12-13 14:11:05,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 346 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) [2022-12-13 14:11:05,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:11:05,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 259 [2022-12-13 14:11:05,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:11:05,806 INFO L130 PetriNetUnfolder]: 356/765 cut-off events. [2022-12-13 14:11:05,807 INFO L131 PetriNetUnfolder]: For 1195/1197 co-relation queries the response was YES. [2022-12-13 14:11:05,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2514 conditions, 765 events. 356/765 cut-off events. For 1195/1197 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3290 event pairs, 162 based on Foata normal form. 2/761 useless extension candidates. Maximal degree in co-relation 2498. Up to 370 conditions per place. [2022-12-13 14:11:05,809 INFO L137 encePairwiseOnDemand]: 255/259 looper letters, 51 selfloop transitions, 5 changer transitions 0/69 dead transitions. [2022-12-13 14:11:05,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 69 transitions, 565 flow [2022-12-13 14:11:05,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:11:05,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:11:05,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2022-12-13 14:11:05,811 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5688545688545689 [2022-12-13 14:11:05,811 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2022-12-13 14:11:05,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2022-12-13 14:11:05,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:11:05,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2022-12-13 14:11:05,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:05,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:05,812 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:05,812 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 346 flow. Second operand 3 states and 442 transitions. [2022-12-13 14:11:05,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 69 transitions, 565 flow [2022-12-13 14:11:05,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 69 transitions, 555 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:11:05,816 INFO L231 Difference]: Finished difference. Result has 64 places, 50 transitions, 343 flow [2022-12-13 14:11:05,816 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=343, PETRI_PLACES=64, PETRI_TRANSITIONS=50} [2022-12-13 14:11:05,817 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 26 predicate places. [2022-12-13 14:11:05,817 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 50 transitions, 343 flow [2022-12-13 14:11:05,817 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) [2022-12-13 14:11:05,817 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:11:05,817 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:11:05,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 14:11:05,817 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 14:11:05,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:11:05,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1768112491, now seen corresponding path program 1 times [2022-12-13 14:11:05,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:11:05,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081414300] [2022-12-13 14:11:05,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:11:05,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:11:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:11:05,861 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:11:05,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:11:05,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081414300] [2022-12-13 14:11:05,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081414300] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:11:05,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040299983] [2022-12-13 14:11:05,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:11:05,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:11:05,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:11:05,863 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:11:05,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 14:11:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:11:05,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:11:05,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:11:05,976 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:11:05,976 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:11:05,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040299983] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:11:05,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:11:05,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 14:11:05,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813802134] [2022-12-13 14:11:05,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:11:05,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:11:05,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:11:05,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:11:05,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:11:05,985 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 259 [2022-12-13 14:11:05,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 50 transitions, 343 flow. Second operand has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:05,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:11:05,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 259 [2022-12-13 14:11:05,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:11:06,090 INFO L130 PetriNetUnfolder]: 321/680 cut-off events. [2022-12-13 14:11:06,090 INFO L131 PetriNetUnfolder]: For 1086/1092 co-relation queries the response was YES. [2022-12-13 14:11:06,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2253 conditions, 680 events. 321/680 cut-off events. For 1086/1092 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2751 event pairs, 106 based on Foata normal form. 12/690 useless extension candidates. Maximal degree in co-relation 2236. Up to 522 conditions per place. [2022-12-13 14:11:06,092 INFO L137 encePairwiseOnDemand]: 256/259 looper letters, 46 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2022-12-13 14:11:06,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 61 transitions, 470 flow [2022-12-13 14:11:06,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:11:06,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 14:11:06,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 582 transitions. [2022-12-13 14:11:06,094 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5617760617760618 [2022-12-13 14:11:06,094 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 582 transitions. [2022-12-13 14:11:06,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 582 transitions. [2022-12-13 14:11:06,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:11:06,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 582 transitions. [2022-12-13 14:11:06,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 145.5) internal successors, (582), 4 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:06,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:06,098 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:06,098 INFO L175 Difference]: Start difference. First operand has 64 places, 50 transitions, 343 flow. Second operand 4 states and 582 transitions. [2022-12-13 14:11:06,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 61 transitions, 470 flow [2022-12-13 14:11:06,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 61 transitions, 465 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:11:06,102 INFO L231 Difference]: Finished difference. Result has 65 places, 48 transitions, 324 flow [2022-12-13 14:11:06,102 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=324, PETRI_PLACES=65, PETRI_TRANSITIONS=48} [2022-12-13 14:11:06,103 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 27 predicate places. [2022-12-13 14:11:06,103 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 48 transitions, 324 flow [2022-12-13 14:11:06,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:06,104 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:11:06,104 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:11:06,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 14:11:06,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 14:11:06,305 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 14:11:06,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:11:06,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1378004717, now seen corresponding path program 2 times [2022-12-13 14:11:06,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:11:06,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243583462] [2022-12-13 14:11:06,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:11:06,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:11:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:11:06,467 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 14:11:06,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:11:06,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243583462] [2022-12-13 14:11:06,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243583462] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:11:06,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:11:06,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:11:06,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749232390] [2022-12-13 14:11:06,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:11:06,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:11:06,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:11:06,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:11:06,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:11:06,488 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 259 [2022-12-13 14:11:06,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 48 transitions, 324 flow. Second operand has 5 states, 5 states have (on average 133.6) internal successors, (668), 5 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:06,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:11:06,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 259 [2022-12-13 14:11:06,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:11:06,611 INFO L130 PetriNetUnfolder]: 397/794 cut-off events. [2022-12-13 14:11:06,611 INFO L131 PetriNetUnfolder]: For 1179/1179 co-relation queries the response was YES. [2022-12-13 14:11:06,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2642 conditions, 794 events. 397/794 cut-off events. For 1179/1179 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3118 event pairs, 83 based on Foata normal form. 8/802 useless extension candidates. Maximal degree in co-relation 2624. Up to 292 conditions per place. [2022-12-13 14:11:06,614 INFO L137 encePairwiseOnDemand]: 251/259 looper letters, 58 selfloop transitions, 15 changer transitions 8/83 dead transitions. [2022-12-13 14:11:06,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 83 transitions, 621 flow [2022-12-13 14:11:06,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 14:11:06,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 14:11:06,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 837 transitions. [2022-12-13 14:11:06,616 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5386100386100386 [2022-12-13 14:11:06,616 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 837 transitions. [2022-12-13 14:11:06,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 837 transitions. [2022-12-13 14:11:06,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:11:06,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 837 transitions. [2022-12-13 14:11:06,618 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) [2022-12-13 14:11:06,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 259.0) internal successors, (1813), 7 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:06,621 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 259.0) internal successors, (1813), 7 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:06,621 INFO L175 Difference]: Start difference. First operand has 65 places, 48 transitions, 324 flow. Second operand 6 states and 837 transitions. [2022-12-13 14:11:06,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 83 transitions, 621 flow [2022-12-13 14:11:06,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 83 transitions, 618 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:11:06,626 INFO L231 Difference]: Finished difference. Result has 69 places, 49 transitions, 373 flow [2022-12-13 14:11:06,626 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=63, 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=373, PETRI_PLACES=69, PETRI_TRANSITIONS=49} [2022-12-13 14:11:06,627 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 31 predicate places. [2022-12-13 14:11:06,627 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 49 transitions, 373 flow [2022-12-13 14:11:06,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 133.6) internal successors, (668), 5 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:06,627 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:11:06,628 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:11:06,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 14:11:06,628 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 14:11:06,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:11:06,628 INFO L85 PathProgramCache]: Analyzing trace with hash 2034989792, now seen corresponding path program 3 times [2022-12-13 14:11:06,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:11:06,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40734596] [2022-12-13 14:11:06,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:11:06,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:11:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:11:06,762 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 14:11:06,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:11:06,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40734596] [2022-12-13 14:11:06,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40734596] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:11:06,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94430927] [2022-12-13 14:11:06,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 14:11:06,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:11:06,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:11:06,763 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:11:06,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 14:11:06,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 14:11:06,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:11:06,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 14:11:06,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:11:06,896 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 14:11:06,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:11:06,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94430927] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:11:06,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:11:06,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2022-12-13 14:11:06,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521508214] [2022-12-13 14:11:06,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:11:06,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:11:06,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:11:06,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:11:06,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-12-13 14:11:06,919 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 259 [2022-12-13 14:11:06,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 49 transitions, 373 flow. Second operand has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:06,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:11:06,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 259 [2022-12-13 14:11:06,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:11:07,023 INFO L130 PetriNetUnfolder]: 307/647 cut-off events. [2022-12-13 14:11:07,023 INFO L131 PetriNetUnfolder]: For 1249/1249 co-relation queries the response was YES. [2022-12-13 14:11:07,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2272 conditions, 647 events. 307/647 cut-off events. For 1249/1249 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2456 event pairs, 85 based on Foata normal form. 10/655 useless extension candidates. Maximal degree in co-relation 2253. Up to 246 conditions per place. [2022-12-13 14:11:07,024 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 0 selfloop transitions, 0 changer transitions 69/69 dead transitions. [2022-12-13 14:11:07,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 69 transitions, 555 flow [2022-12-13 14:11:07,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 14:11:07,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 14:11:07,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 825 transitions. [2022-12-13 14:11:07,026 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5308880308880309 [2022-12-13 14:11:07,026 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 825 transitions. [2022-12-13 14:11:07,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 825 transitions. [2022-12-13 14:11:07,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:11:07,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 825 transitions. [2022-12-13 14:11:07,028 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) [2022-12-13 14:11:07,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 259.0) internal successors, (1813), 7 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:07,030 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 259.0) internal successors, (1813), 7 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:07,030 INFO L175 Difference]: Start difference. First operand has 69 places, 49 transitions, 373 flow. Second operand 6 states and 825 transitions. [2022-12-13 14:11:07,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 69 transitions, 555 flow [2022-12-13 14:11:07,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 69 transitions, 531 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 14:11:07,035 INFO L231 Difference]: Finished difference. Result has 68 places, 0 transitions, 0 flow [2022-12-13 14:11:07,035 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, 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} [2022-12-13 14:11:07,036 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 30 predicate places. [2022-12-13 14:11:07,036 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 0 transitions, 0 flow [2022-12-13 14:11:07,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:11:07,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2022-12-13 14:11:07,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-12-13 14:11:07,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-12-13 14:11:07,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-12-13 14:11:07,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-12-13 14:11:07,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-12-13 14:11:07,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-12-13 14:11:07,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-12-13 14:11:07,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2022-12-13 14:11:07,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2022-12-13 14:11:07,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-12-13 14:11:07,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-12-13 14:11:07,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-12-13 14:11:07,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-12-13 14:11:07,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-12-13 14:11:07,041 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-12-13 14:11:07,041 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-12-13 14:11:07,041 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-12-13 14:11:07,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 14:11:07,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 14:11:07,243 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:11:07,257 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 14:11:07,257 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 14:11:07,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 02:11:07 BasicIcfg [2022-12-13 14:11:07,265 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 14:11:07,266 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 14:11:07,267 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 14:11:07,267 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 14:11:07,268 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:10:56" (3/4) ... [2022-12-13 14:11:07,274 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 14:11:07,289 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 14:11:07,290 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 14:11:07,299 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-12-13 14:11:07,300 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-12-13 14:11:07,300 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 14:11:07,300 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 14:11:07,376 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 14:11:07,376 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 14:11:07,377 INFO L158 Benchmark]: Toolchain (without parser) took 11494.94ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 124.5MB in the beginning and 98.2MB in the end (delta: 26.3MB). Peak memory consumption was 60.4MB. Max. memory is 16.1GB. [2022-12-13 14:11:07,378 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 102.8MB. Free memory is still 51.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:11:07,379 INFO L158 Benchmark]: CACSL2BoogieTranslator took 391.01ms. Allocated memory is still 163.6MB. Free memory was 124.1MB in the beginning and 97.9MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-12-13 14:11:07,379 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.59ms. Allocated memory is still 163.6MB. Free memory was 97.9MB in the beginning and 95.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 14:11:07,380 INFO L158 Benchmark]: Boogie Preprocessor took 23.35ms. Allocated memory is still 163.6MB. Free memory was 95.7MB in the beginning and 93.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 14:11:07,381 INFO L158 Benchmark]: RCFGBuilder took 390.93ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 93.7MB in the beginning and 166.7MB in the end (delta: -73.0MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. [2022-12-13 14:11:07,382 INFO L158 Benchmark]: TraceAbstraction took 10541.77ms. Allocated memory is still 197.1MB. Free memory was 166.7MB in the beginning and 101.3MB in the end (delta: 65.3MB). Peak memory consumption was 65.3MB. Max. memory is 16.1GB. [2022-12-13 14:11:07,382 INFO L158 Benchmark]: Witness Printer took 110.05ms. Allocated memory is still 197.1MB. Free memory was 101.3MB in the beginning and 98.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 14:11:07,385 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 102.8MB. Free memory is still 51.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 391.01ms. Allocated memory is still 163.6MB. Free memory was 124.1MB in the beginning and 97.9MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.59ms. Allocated memory is still 163.6MB. Free memory was 97.9MB in the beginning and 95.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.35ms. Allocated memory is still 163.6MB. Free memory was 95.7MB in the beginning and 93.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 390.93ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 93.7MB in the beginning and 166.7MB in the end (delta: -73.0MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. * TraceAbstraction took 10541.77ms. Allocated memory is still 197.1MB. Free memory was 166.7MB in the beginning and 101.3MB in the end (delta: 65.3MB). Peak memory consumption was 65.3MB. Max. memory is 16.1GB. * Witness Printer took 110.05ms. Allocated memory is still 197.1MB. Free memory was 101.3MB in the beginning and 98.2MB in the end (delta: 3.1MB). 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: 4.7s, 131 PlacesBefore, 38 PlacesAfterwards, 132 TransitionsBefore, 36 TransitionsAfterwards, 3074 CoEnabledTransitionPairs, 7 FixpointIterations, 53 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 3 ChoiceCompositions, 109 TotalNumberOfCompositions, 6562 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3350, independent: 3138, independent conditional: 0, independent unconditional: 3138, dependent: 212, dependent conditional: 0, dependent unconditional: 212, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1620, independent: 1581, independent conditional: 0, independent unconditional: 1581, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3350, independent: 1557, independent conditional: 0, independent unconditional: 1557, dependent: 173, dependent conditional: 0, dependent unconditional: 173, unknown: 1620, unknown conditional: 0, unknown unconditional: 1620] , Statistics on independence cache: Total cache size (in pairs): 146, Positive cache size: 128, Positive conditional cache size: 0, Positive unconditional cache size: 128, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, 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: 10.4s, OverallIterations: 15, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1028 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 847 mSDsluCounter, 220 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 161 mSDsCounter, 166 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1798 IncrementalHoareTripleChecker+Invalid, 1964 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 166 mSolverCounterUnsat, 59 mSDtfsCounter, 1798 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 187 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=434occurred in iteration=4, InterpolantAutomatonStates: 73, 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, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 353 NumberOfCodeBlocks, 353 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 351 ConstructedInterpolants, 0 QuantifiedInterpolants, 881 SizeOfPredicates, 9 NumberOfNonLiveVariables, 1256 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 21 InterpolantComputations, 14 PerfectInterpolantSequences, 65/90 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! [2022-12-13 14:11:07,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd31cdb-1147-4b09-b332-a4ce6a8e437b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE