./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R --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 ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 --- 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-38b53e6 [2022-11-25 16:41:18,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:41:18,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:41:19,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:41:19,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:41:19,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:41:19,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:41:19,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:41:19,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:41:19,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:41:19,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:41:19,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:41:19,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:41:19,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:41:19,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:41:19,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:41:19,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:41:19,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:41:19,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:41:19,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:41:19,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:41:19,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:41:19,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:41:19,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:41:19,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:41:19,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:41:19,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:41:19,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:41:19,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:41:19,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:41:19,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:41:19,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:41:19,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:41:19,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:41:19,091 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:41:19,091 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:41:19,092 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:41:19,092 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:41:19,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:41:19,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:41:19,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:41:19,095 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 16:41:19,135 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:41:19,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:41:19,139 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:41:19,140 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:41:19,141 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:41:19,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:41:19,143 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:41:19,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:41:19,143 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:41:19,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:41:19,145 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:41:19,146 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 16:41:19,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:41:19,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:41:19,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:41:19,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:41:19,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:41:19,148 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:41:19,148 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 16:41:19,148 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:41:19,149 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:41:19,149 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:41:19,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:41:19,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:41:19,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:41:19,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:41:19,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:41:19,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:41:19,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:41:19,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:41:19,152 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:41:19,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:41:19,153 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:41:19,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:41:19,154 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:41:19,154 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:41:19,154 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_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 [2022-11-25 16:41:19,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:41:19,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:41:19,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:41:19,623 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:41:19,624 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:41:19,625 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2022-11-25 16:41:23,511 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:41:23,873 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:41:23,878 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2022-11-25 16:41:23,905 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/data/1745d865d/7fc3db3464cf4ea783f8b4e962519e8a/FLAG298a09774 [2022-11-25 16:41:23,935 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/data/1745d865d/7fc3db3464cf4ea783f8b4e962519e8a [2022-11-25 16:41:23,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:41:23,945 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:41:23,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:41:23,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:41:23,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:41:23,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:41:23" (1/1) ... [2022-11-25 16:41:23,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38de974e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:23, skipping insertion in model container [2022-11-25 16:41:23,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:41:23" (1/1) ... [2022-11-25 16:41:23,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:41:24,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:41:24,661 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i[47038,47051] [2022-11-25 16:41:24,676 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 16:41:24,677 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 16:41:24,678 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 16:41:24,679 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 16:41:24,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:41:24,753 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:41:24,797 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_56be2295-ecdb-4d95-96e3-955a95ce7703/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i[47038,47051] [2022-11-25 16:41:24,802 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 16:41:24,802 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 16:41:24,803 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 16:41:24,804 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 16:41:24,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:41:24,902 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:41:24,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:24 WrapperNode [2022-11-25 16:41:24,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:41:24,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:41:24,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:41:24,906 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:41:24,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:24" (1/1) ... [2022-11-25 16:41:24,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:24" (1/1) ... [2022-11-25 16:41:24,978 INFO L138 Inliner]: procedures = 277, calls = 45, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 198 [2022-11-25 16:41:24,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:41:24,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:41:24,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:41:24,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:41:24,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:24" (1/1) ... [2022-11-25 16:41:24,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:24" (1/1) ... [2022-11-25 16:41:24,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:24" (1/1) ... [2022-11-25 16:41:24,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:24" (1/1) ... [2022-11-25 16:41:25,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:24" (1/1) ... [2022-11-25 16:41:25,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:24" (1/1) ... [2022-11-25 16:41:25,020 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:24" (1/1) ... [2022-11-25 16:41:25,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:24" (1/1) ... [2022-11-25 16:41:25,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:41:25,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:41:25,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:41:25,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:41:25,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:24" (1/1) ... [2022-11-25 16:41:25,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:41:25,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:41:25,069 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:41:25,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:41:25,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 16:41:25,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 16:41:25,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 16:41:25,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 16:41:25,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 16:41:25,130 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 16:41:25,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 16:41:25,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:41:25,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 16:41:25,131 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-25 16:41:25,131 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-25 16:41:25,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:41:25,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:41:25,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:41:25,134 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 16:41:25,342 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:41:25,344 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:41:26,007 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:41:26,021 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:41:26,021 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-25 16:41:26,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:41:26 BoogieIcfgContainer [2022-11-25 16:41:26,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:41:26,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:41:26,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:41:26,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:41:26,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:41:23" (1/3) ... [2022-11-25 16:41:26,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7caf4f27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:41:26, skipping insertion in model container [2022-11-25 16:41:26,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:41:24" (2/3) ... [2022-11-25 16:41:26,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7caf4f27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:41:26, skipping insertion in model container [2022-11-25 16:41:26,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:41:26" (3/3) ... [2022-11-25 16:41:26,047 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_91-arrayloop2_racefree.i [2022-11-25 16:41:26,057 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 16:41:26,068 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:41:26,069 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-25 16:41:26,069 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 16:41:26,199 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-25 16:41:26,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 229 transitions, 466 flow [2022-11-25 16:41:26,371 INFO L130 PetriNetUnfolder]: 26/246 cut-off events. [2022-11-25 16:41:26,372 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-25 16:41:26,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 246 events. 26/246 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 698 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 126. Up to 4 conditions per place. [2022-11-25 16:41:26,383 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 229 transitions, 466 flow [2022-11-25 16:41:26,392 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 226 transitions, 460 flow [2022-11-25 16:41:26,397 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 16:41:26,418 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 226 transitions, 460 flow [2022-11-25 16:41:26,422 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 226 transitions, 460 flow [2022-11-25 16:41:26,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 226 transitions, 460 flow [2022-11-25 16:41:26,488 INFO L130 PetriNetUnfolder]: 25/243 cut-off events. [2022-11-25 16:41:26,489 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-25 16:41:26,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 243 events. 25/243 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 679 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 126. Up to 4 conditions per place. [2022-11-25 16:41:26,497 INFO L119 LiptonReduction]: Number of co-enabled transitions 5400 [2022-11-25 16:42:10,617 WARN L233 SmtUtils]: Spent 24.52s on a formula simplification. DAG size of input: 192 DAG size of output: 191 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:42:18,033 WARN L233 SmtUtils]: Spent 7.41s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:42:40,910 WARN L233 SmtUtils]: Spent 22.87s on a formula simplification. DAG size of input: 194 DAG size of output: 192 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:42:51,194 WARN L233 SmtUtils]: Spent 10.28s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:43:08,532 WARN L233 SmtUtils]: Spent 17.24s on a formula simplification. DAG size of input: 192 DAG size of output: 190 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:43:15,978 WARN L233 SmtUtils]: Spent 7.44s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:43:37,183 WARN L233 SmtUtils]: Spent 21.20s on a formula simplification. DAG size of input: 192 DAG size of output: 190 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:43:47,038 WARN L233 SmtUtils]: Spent 9.85s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:43:47,043 INFO L134 LiptonReduction]: Checked pairs total: 5546 [2022-11-25 16:43:47,044 INFO L136 LiptonReduction]: Total number of compositions: 229 [2022-11-25 16:43:47,069 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:43:47,074 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;@702fcabe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:43:47,074 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-25 16:43:47,080 INFO L130 PetriNetUnfolder]: 2/8 cut-off events. [2022-11-25 16:43:47,080 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:43:47,080 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:43:47,081 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 16:43:47,082 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 16:43:47,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:47,087 INFO L85 PathProgramCache]: Analyzing trace with hash 913864, now seen corresponding path program 1 times [2022-11-25 16:43:47,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:43:47,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101686624] [2022-11-25 16:43:47,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:47,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:43:47,215 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 16:43:47,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [6774702] [2022-11-25 16:43:47,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:47,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:43:47,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:43:47,221 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:43:47,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 16:43:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:47,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 16:43:47,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:43:47,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:43:47,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:43:47,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:43:47,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101686624] [2022-11-25 16:43:47,409 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 16:43:47,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6774702] [2022-11-25 16:43:47,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6774702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:43:47,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:43:47,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:43:47,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456419726] [2022-11-25 16:43:47,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:43:47,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:43:47,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:43:47,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:43:47,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:43:47,517 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 458 [2022-11-25 16:43:47,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 52 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:47,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:43:47,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 458 [2022-11-25 16:43:47,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:43:48,031 INFO L130 PetriNetUnfolder]: 102/233 cut-off events. [2022-11-25 16:43:48,031 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 16:43:48,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 233 events. 102/233 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 858 event pairs, 80 based on Foata normal form. 12/135 useless extension candidates. Maximal degree in co-relation 404. Up to 209 conditions per place. [2022-11-25 16:43:48,034 INFO L137 encePairwiseOnDemand]: 439/458 looper letters, 38 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2022-11-25 16:43:48,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 45 transitions, 180 flow [2022-11-25 16:43:48,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:43:48,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:43:48,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 664 transitions. [2022-11-25 16:43:48,055 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48326055312954874 [2022-11-25 16:43:48,056 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 664 transitions. [2022-11-25 16:43:48,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 664 transitions. [2022-11-25 16:43:48,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:43:48,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 664 transitions. [2022-11-25 16:43:48,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:48,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:48,084 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:48,086 INFO L175 Difference]: Start difference. First operand has 41 places, 52 transitions, 112 flow. Second operand 3 states and 664 transitions. [2022-11-25 16:43:48,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 45 transitions, 180 flow [2022-11-25 16:43:48,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 16:43:48,093 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 120 flow [2022-11-25 16:43:48,095 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2022-11-25 16:43:48,100 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2022-11-25 16:43:48,100 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 120 flow [2022-11-25 16:43:48,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:48,101 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:43:48,102 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 16:43:48,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 16:43:48,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-25 16:43:48,303 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 16:43:48,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:48,304 INFO L85 PathProgramCache]: Analyzing trace with hash 914092, now seen corresponding path program 1 times [2022-11-25 16:43:48,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:43:48,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510347751] [2022-11-25 16:43:48,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:48,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:43:48,353 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 16:43:48,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1170799071] [2022-11-25 16:43:48,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:48,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:43:48,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:43:48,361 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:43:48,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 16:43:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:48,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 16:43:48,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:43:48,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:43:48,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:43:48,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:43:48,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510347751] [2022-11-25 16:43:48,553 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 16:43:48,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170799071] [2022-11-25 16:43:48,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170799071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:43:48,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:43:48,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:43:48,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599580334] [2022-11-25 16:43:48,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:43:48,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:43:48,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:43:48,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:43:48,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:43:48,626 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 458 [2022-11-25 16:43:48,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:48,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:43:48,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 458 [2022-11-25 16:43:48,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:43:48,837 INFO L130 PetriNetUnfolder]: 101/231 cut-off events. [2022-11-25 16:43:48,838 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 16:43:48,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 231 events. 101/231 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 859 event pairs, 80 based on Foata normal form. 2/128 useless extension candidates. Maximal degree in co-relation 445. Up to 210 conditions per place. [2022-11-25 16:43:48,840 INFO L137 encePairwiseOnDemand]: 456/458 looper letters, 37 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2022-11-25 16:43:48,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 188 flow [2022-11-25 16:43:48,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:43:48,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:43:48,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 650 transitions. [2022-11-25 16:43:48,845 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47307132459970885 [2022-11-25 16:43:48,845 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 650 transitions. [2022-11-25 16:43:48,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 650 transitions. [2022-11-25 16:43:48,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:43:48,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 650 transitions. [2022-11-25 16:43:48,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:48,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:48,855 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:48,855 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 120 flow. Second operand 3 states and 650 transitions. [2022-11-25 16:43:48,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 188 flow [2022-11-25 16:43:48,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 16:43:48,857 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 113 flow [2022-11-25 16:43:48,858 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2022-11-25 16:43:48,858 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2022-11-25 16:43:48,859 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 113 flow [2022-11-25 16:43:48,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:48,860 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:43:48,860 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2022-11-25 16:43:48,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 16:43:49,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:43:49,072 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 16:43:49,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:49,072 INFO L85 PathProgramCache]: Analyzing trace with hash 878420418, now seen corresponding path program 1 times [2022-11-25 16:43:49,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:43:49,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055844336] [2022-11-25 16:43:49,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:49,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:43:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:49,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:43:49,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:43:49,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055844336] [2022-11-25 16:43:49,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055844336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:43:49,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:43:49,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:43:49,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844346646] [2022-11-25 16:43:49,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:43:49,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:43:49,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:43:49,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:43:49,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:43:49,278 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 458 [2022-11-25 16:43:49,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:49,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:43:49,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 458 [2022-11-25 16:43:49,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:43:49,558 INFO L130 PetriNetUnfolder]: 101/233 cut-off events. [2022-11-25 16:43:49,558 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 16:43:49,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 233 events. 101/233 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 861 event pairs, 80 based on Foata normal form. 2/130 useless extension candidates. Maximal degree in co-relation 455. Up to 212 conditions per place. [2022-11-25 16:43:49,561 INFO L137 encePairwiseOnDemand]: 451/458 looper letters, 36 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2022-11-25 16:43:49,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 193 flow [2022-11-25 16:43:49,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:43:49,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:43:49,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 648 transitions. [2022-11-25 16:43:49,565 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47161572052401746 [2022-11-25 16:43:49,565 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 648 transitions. [2022-11-25 16:43:49,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 648 transitions. [2022-11-25 16:43:49,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:43:49,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 648 transitions. [2022-11-25 16:43:49,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:49,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:49,573 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:49,574 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 113 flow. Second operand 3 states and 648 transitions. [2022-11-25 16:43:49,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 193 flow [2022-11-25 16:43:49,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 193 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 16:43:49,578 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 138 flow [2022-11-25 16:43:49,584 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2022-11-25 16:43:49,586 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2022-11-25 16:43:49,586 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 138 flow [2022-11-25 16:43:49,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:49,587 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:43:49,587 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2022-11-25 16:43:49,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 16:43:49,587 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 16:43:49,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:49,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1901292090, now seen corresponding path program 1 times [2022-11-25 16:43:49,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:43:49,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082178371] [2022-11-25 16:43:49,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:49,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:43:49,672 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 16:43:49,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [605241251] [2022-11-25 16:43:49,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:49,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:43:49,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:43:49,684 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:43:49,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 16:43:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:49,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 16:43:49,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:43:49,966 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:43:49,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:43:49,988 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:43:49,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:43:49,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082178371] [2022-11-25 16:43:49,989 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 16:43:49,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605241251] [2022-11-25 16:43:49,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605241251] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:43:49,990 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 16:43:49,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-25 16:43:49,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507993989] [2022-11-25 16:43:49,990 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 16:43:49,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 16:43:49,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:43:49,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 16:43:49,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 16:43:50,098 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 458 [2022-11-25 16:43:50,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 204.66666666666666) internal successors, (1228), 6 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:50,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:43:50,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 458 [2022-11-25 16:43:50,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:43:50,845 INFO L130 PetriNetUnfolder]: 103/245 cut-off events. [2022-11-25 16:43:50,846 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-25 16:43:50,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 245 events. 103/245 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 921 event pairs, 80 based on Foata normal form. 3/140 useless extension candidates. Maximal degree in co-relation 510. Up to 210 conditions per place. [2022-11-25 16:43:50,852 INFO L137 encePairwiseOnDemand]: 451/458 looper letters, 40 selfloop transitions, 8 changer transitions 0/52 dead transitions. [2022-11-25 16:43:50,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 52 transitions, 282 flow [2022-11-25 16:43:50,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:43:50,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 16:43:50,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1273 transitions. [2022-11-25 16:43:50,857 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4632459970887918 [2022-11-25 16:43:50,857 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1273 transitions. [2022-11-25 16:43:50,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1273 transitions. [2022-11-25 16:43:50,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:43:50,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1273 transitions. [2022-11-25 16:43:50,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 212.16666666666666) internal successors, (1273), 6 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:50,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 458.0) internal successors, (3206), 7 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:50,870 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 458.0) internal successors, (3206), 7 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:50,870 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 138 flow. Second operand 6 states and 1273 transitions. [2022-11-25 16:43:50,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 52 transitions, 282 flow [2022-11-25 16:43:50,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 277 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 16:43:50,875 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 216 flow [2022-11-25 16:43:50,875 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2022-11-25 16:43:50,877 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2022-11-25 16:43:50,877 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 216 flow [2022-11-25 16:43:50,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 204.66666666666666) internal successors, (1228), 6 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:50,880 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:43:50,881 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2022-11-25 16:43:50,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 16:43:51,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:43:51,088 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 16:43:51,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:51,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1773877211, now seen corresponding path program 1 times [2022-11-25 16:43:51,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:43:51,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923134268] [2022-11-25 16:43:51,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:51,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:43:51,177 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 16:43:51,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1018753021] [2022-11-25 16:43:51,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:51,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:43:51,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:43:51,180 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:43:51,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 16:43:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:51,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 1302 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 16:43:51,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:43:51,739 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:43:51,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:43:51,825 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:43:51,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:43:51,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923134268] [2022-11-25 16:43:51,826 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 16:43:51,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018753021] [2022-11-25 16:43:51,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018753021] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:43:51,827 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 16:43:51,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-25 16:43:51,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122127690] [2022-11-25 16:43:51,828 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 16:43:51,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 16:43:51,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:43:51,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 16:43:51,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-25 16:43:51,990 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 458 [2022-11-25 16:43:51,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 216 flow. Second operand has 12 states, 12 states have (on average 204.33333333333334) internal successors, (2452), 12 states have internal predecessors, (2452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:51,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:43:51,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 458 [2022-11-25 16:43:51,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:43:53,543 INFO L130 PetriNetUnfolder]: 103/269 cut-off events. [2022-11-25 16:43:53,543 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2022-11-25 16:43:53,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 686 conditions, 269 events. 103/269 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1096 event pairs, 80 based on Foata normal form. 12/168 useless extension candidates. Maximal degree in co-relation 666. Up to 210 conditions per place. [2022-11-25 16:43:53,545 INFO L137 encePairwiseOnDemand]: 451/458 looper letters, 52 selfloop transitions, 14 changer transitions 0/70 dead transitions. [2022-11-25 16:43:53,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 70 transitions, 536 flow [2022-11-25 16:43:53,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 16:43:53,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 16:43:53,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2518 transitions. [2022-11-25 16:43:53,553 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4581513828238719 [2022-11-25 16:43:53,554 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2518 transitions. [2022-11-25 16:43:53,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2518 transitions. [2022-11-25 16:43:53,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:43:53,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2518 transitions. [2022-11-25 16:43:53,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 209.83333333333334) internal successors, (2518), 12 states have internal predecessors, (2518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:53,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 458.0) internal successors, (5954), 13 states have internal predecessors, (5954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:53,577 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 458.0) internal successors, (5954), 13 states have internal predecessors, (5954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:53,579 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 216 flow. Second operand 12 states and 2518 transitions. [2022-11-25 16:43:53,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 70 transitions, 536 flow [2022-11-25 16:43:53,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 70 transitions, 533 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:43:53,590 INFO L231 Difference]: Finished difference. Result has 71 places, 56 transitions, 370 flow [2022-11-25 16:43:53,591 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=370, PETRI_PLACES=71, PETRI_TRANSITIONS=56} [2022-11-25 16:43:53,594 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 30 predicate places. [2022-11-25 16:43:53,594 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 56 transitions, 370 flow [2022-11-25 16:43:53,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 204.33333333333334) internal successors, (2452), 12 states have internal predecessors, (2452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:53,595 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:43:53,596 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 2, 1, 1, 1] [2022-11-25 16:43:53,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-25 16:43:53,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:43:53,804 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 16:43:53,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:53,805 INFO L85 PathProgramCache]: Analyzing trace with hash -917937883, now seen corresponding path program 2 times [2022-11-25 16:43:53,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:43:53,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817340991] [2022-11-25 16:43:53,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:53,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:43:53,985 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 16:43:53,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [455155109] [2022-11-25 16:43:53,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 16:43:53,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:43:53,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:43:53,990 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:43:54,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 16:43:55,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 16:43:55,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:43:55,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 2706 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 16:43:55,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:43:55,256 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:43:55,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:43:55,566 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:43:55,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:43:55,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817340991] [2022-11-25 16:43:55,566 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 16:43:55,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455155109] [2022-11-25 16:43:55,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455155109] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:43:55,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 16:43:55,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-25 16:43:55,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358341569] [2022-11-25 16:43:55,567 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 16:43:55,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-25 16:43:55,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:43:55,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-25 16:43:55,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-25 16:43:55,907 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 458 [2022-11-25 16:43:55,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 56 transitions, 370 flow. Second operand has 24 states, 24 states have (on average 204.16666666666666) internal successors, (4900), 24 states have internal predecessors, (4900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:55,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:43:55,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 458 [2022-11-25 16:43:55,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:43:58,762 INFO L130 PetriNetUnfolder]: 103/317 cut-off events. [2022-11-25 16:43:58,762 INFO L131 PetriNetUnfolder]: For 1224/1224 co-relation queries the response was YES. [2022-11-25 16:43:58,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1081 conditions, 317 events. 103/317 cut-off events. For 1224/1224 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1247 event pairs, 80 based on Foata normal form. 24/216 useless extension candidates. Maximal degree in co-relation 1053. Up to 210 conditions per place. [2022-11-25 16:43:58,765 INFO L137 encePairwiseOnDemand]: 451/458 looper letters, 76 selfloop transitions, 26 changer transitions 0/106 dead transitions. [2022-11-25 16:43:58,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 106 transitions, 1158 flow [2022-11-25 16:43:58,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-25 16:43:58,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-25 16:43:58,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5008 transitions. [2022-11-25 16:43:58,780 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4556040756914119 [2022-11-25 16:43:58,780 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5008 transitions. [2022-11-25 16:43:58,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5008 transitions. [2022-11-25 16:43:58,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:43:58,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5008 transitions. [2022-11-25 16:43:58,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 208.66666666666666) internal successors, (5008), 24 states have internal predecessors, (5008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:58,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 458.0) internal successors, (11450), 25 states have internal predecessors, (11450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:58,821 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 458.0) internal successors, (11450), 25 states have internal predecessors, (11450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:58,821 INFO L175 Difference]: Start difference. First operand has 71 places, 56 transitions, 370 flow. Second operand 24 states and 5008 transitions. [2022-11-25 16:43:58,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 106 transitions, 1158 flow [2022-11-25 16:43:58,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 106 transitions, 1085 flow, removed 13 selfloop flow, removed 4 redundant places. [2022-11-25 16:43:58,829 INFO L231 Difference]: Finished difference. Result has 103 places, 70 transitions, 638 flow [2022-11-25 16:43:58,829 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=638, PETRI_PLACES=103, PETRI_TRANSITIONS=70} [2022-11-25 16:43:58,830 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 62 predicate places. [2022-11-25 16:43:58,830 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 70 transitions, 638 flow [2022-11-25 16:43:58,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 204.16666666666666) internal successors, (4900), 24 states have internal predecessors, (4900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:58,833 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:43:58,833 INFO L209 CegarLoopForPetriNet]: trace histogram [23, 2, 1, 1, 1] [2022-11-25 16:43:58,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 16:43:59,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:43:59,046 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 16:43:59,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:59,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1587434277, now seen corresponding path program 3 times [2022-11-25 16:43:59,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:43:59,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46708616] [2022-11-25 16:43:59,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:59,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:43:59,356 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 16:43:59,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [987963488] [2022-11-25 16:43:59,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 16:43:59,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:43:59,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:43:59,358 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:43:59,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 16:44:00,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 16:44:00,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:44:00,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 16:44:00,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:44:00,618 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-25 16:44:00,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:44:00,969 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-25 16:44:00,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:44:00,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46708616] [2022-11-25 16:44:00,969 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 16:44:00,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987963488] [2022-11-25 16:44:00,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987963488] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:44:00,970 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 16:44:00,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-25 16:44:00,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148212692] [2022-11-25 16:44:00,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 16:44:00,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 16:44:00,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:44:00,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 16:44:00,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-25 16:44:02,226 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 458 [2022-11-25 16:44:02,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 70 transitions, 638 flow. Second operand has 10 states, 10 states have (on average 197.4) internal successors, (1974), 10 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:02,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:44:02,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 458 [2022-11-25 16:44:02,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:44:05,963 INFO L130 PetriNetUnfolder]: 203/582 cut-off events. [2022-11-25 16:44:05,963 INFO L131 PetriNetUnfolder]: For 949/949 co-relation queries the response was YES. [2022-11-25 16:44:05,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1902 conditions, 582 events. 203/582 cut-off events. For 949/949 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2069 event pairs, 160 based on Foata normal form. 2/360 useless extension candidates. Maximal degree in co-relation 1860. Up to 244 conditions per place. [2022-11-25 16:44:05,969 INFO L137 encePairwiseOnDemand]: 449/458 looper letters, 130 selfloop transitions, 17 changer transitions 0/151 dead transitions. [2022-11-25 16:44:05,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 151 transitions, 1559 flow [2022-11-25 16:44:05,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 16:44:05,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 16:44:05,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2240 transitions. [2022-11-25 16:44:05,977 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44462088130210403 [2022-11-25 16:44:05,977 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2240 transitions. [2022-11-25 16:44:05,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2240 transitions. [2022-11-25 16:44:05,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:44:05,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2240 transitions. [2022-11-25 16:44:05,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 203.63636363636363) internal successors, (2240), 11 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:05,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 458.0) internal successors, (5496), 12 states have internal predecessors, (5496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:05,996 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 458.0) internal successors, (5496), 12 states have internal predecessors, (5496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:05,997 INFO L175 Difference]: Start difference. First operand has 103 places, 70 transitions, 638 flow. Second operand 11 states and 2240 transitions. [2022-11-25 16:44:05,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 151 transitions, 1559 flow [2022-11-25 16:44:06,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 151 transitions, 1486 flow, removed 3 selfloop flow, removed 10 redundant places. [2022-11-25 16:44:06,016 INFO L231 Difference]: Finished difference. Result has 107 places, 81 transitions, 794 flow [2022-11-25 16:44:06,016 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=794, PETRI_PLACES=107, PETRI_TRANSITIONS=81} [2022-11-25 16:44:06,017 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 66 predicate places. [2022-11-25 16:44:06,017 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 81 transitions, 794 flow [2022-11-25 16:44:06,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 197.4) internal successors, (1974), 10 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:06,018 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:44:06,018 INFO L209 CegarLoopForPetriNet]: trace histogram [24, 2, 1, 1, 1] [2022-11-25 16:44:06,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-25 16:44:06,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-25 16:44:06,227 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 16:44:06,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:44:06,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1965825446, now seen corresponding path program 1 times [2022-11-25 16:44:06,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:44:06,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822018751] [2022-11-25 16:44:06,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:44:06,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:44:06,544 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 16:44:06,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1655743491] [2022-11-25 16:44:06,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:44:06,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:44:06,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:44:06,547 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:44:06,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 16:44:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:44:08,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 5748 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-25 16:44:08,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:44:09,291 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 70 proven. 253 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 16:44:09,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:44:09,902 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 70 proven. 253 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 16:44:09,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:44:09,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822018751] [2022-11-25 16:44:09,903 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 16:44:09,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655743491] [2022-11-25 16:44:09,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655743491] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:44:09,903 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 16:44:09,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2022-11-25 16:44:09,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943218075] [2022-11-25 16:44:09,903 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 16:44:09,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-25 16:44:09,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:44:09,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-25 16:44:09,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-11-25 16:44:10,285 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 458 [2022-11-25 16:44:10,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 81 transitions, 794 flow. Second operand has 32 states, 32 states have (on average 204.15625) internal successors, (6533), 32 states have internal predecessors, (6533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:10,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:44:10,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 458 [2022-11-25 16:44:10,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:44:13,080 INFO L130 PetriNetUnfolder]: 203/630 cut-off events. [2022-11-25 16:44:13,080 INFO L131 PetriNetUnfolder]: For 8396/8396 co-relation queries the response was YES. [2022-11-25 16:44:13,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2268 conditions, 630 events. 203/630 cut-off events. For 8396/8396 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2231 event pairs, 160 based on Foata normal form. 24/451 useless extension candidates. Maximal degree in co-relation 2220. Up to 412 conditions per place. [2022-11-25 16:44:13,085 INFO L137 encePairwiseOnDemand]: 452/458 looper letters, 119 selfloop transitions, 41 changer transitions 0/164 dead transitions. [2022-11-25 16:44:13,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 164 transitions, 2376 flow [2022-11-25 16:44:13,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-25 16:44:13,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-25 16:44:13,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 6634 transitions. [2022-11-25 16:44:13,104 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45264737991266374 [2022-11-25 16:44:13,105 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 6634 transitions. [2022-11-25 16:44:13,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 6634 transitions. [2022-11-25 16:44:13,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:44:13,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 6634 transitions. [2022-11-25 16:44:13,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 207.3125) internal successors, (6634), 32 states have internal predecessors, (6634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:13,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 458.0) internal successors, (15114), 33 states have internal predecessors, (15114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:13,150 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 458.0) internal successors, (15114), 33 states have internal predecessors, (15114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:13,150 INFO L175 Difference]: Start difference. First operand has 107 places, 81 transitions, 794 flow. Second operand 32 states and 6634 transitions. [2022-11-25 16:44:13,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 164 transitions, 2376 flow [2022-11-25 16:44:13,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 164 transitions, 2346 flow, removed 13 selfloop flow, removed 3 redundant places. [2022-11-25 16:44:13,179 INFO L231 Difference]: Finished difference. Result has 144 places, 92 transitions, 1048 flow [2022-11-25 16:44:13,179 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1048, PETRI_PLACES=144, PETRI_TRANSITIONS=92} [2022-11-25 16:44:13,180 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 103 predicate places. [2022-11-25 16:44:13,180 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 92 transitions, 1048 flow [2022-11-25 16:44:13,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 204.15625) internal successors, (6533), 32 states have internal predecessors, (6533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:13,183 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:44:13,183 INFO L209 CegarLoopForPetriNet]: trace histogram [32, 2, 1, 1, 1] [2022-11-25 16:44:13,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 16:44:13,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:44:13,398 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 16:44:13,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:44:13,398 INFO L85 PathProgramCache]: Analyzing trace with hash -870231642, now seen corresponding path program 2 times [2022-11-25 16:44:13,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:44:13,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824840577] [2022-11-25 16:44:13,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:44:13,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:44:13,797 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 16:44:13,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1367650038] [2022-11-25 16:44:13,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 16:44:13,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:44:13,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:44:13,799 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:44:13,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 16:44:37,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 16:44:37,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:44:37,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 7620 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 16:44:37,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:44:38,011 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-25 16:44:38,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:44:38,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:44:38,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824840577] [2022-11-25 16:44:38,012 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 16:44:38,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367650038] [2022-11-25 16:44:38,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367650038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:44:38,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:44:38,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 16:44:38,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442873266] [2022-11-25 16:44:38,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:44:38,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:44:38,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:44:38,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:44:38,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:44:38,103 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 458 [2022-11-25 16:44:38,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 92 transitions, 1048 flow. Second operand has 7 states, 7 states have (on average 200.14285714285714) internal successors, (1401), 7 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:38,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:44:38,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 458 [2022-11-25 16:44:38,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:44:39,054 INFO L130 PetriNetUnfolder]: 201/570 cut-off events. [2022-11-25 16:44:39,054 INFO L131 PetriNetUnfolder]: For 2683/2683 co-relation queries the response was YES. [2022-11-25 16:44:39,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1899 conditions, 570 events. 201/570 cut-off events. For 2683/2683 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1931 event pairs, 160 based on Foata normal form. 59/427 useless extension candidates. Maximal degree in co-relation 1843. Up to 492 conditions per place. [2022-11-25 16:44:39,061 INFO L137 encePairwiseOnDemand]: 452/458 looper letters, 96 selfloop transitions, 9 changer transitions 0/109 dead transitions. [2022-11-25 16:44:39,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 109 transitions, 1350 flow [2022-11-25 16:44:39,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:44:39,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 16:44:39,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1235 transitions. [2022-11-25 16:44:39,065 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4494177583697234 [2022-11-25 16:44:39,066 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1235 transitions. [2022-11-25 16:44:39,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1235 transitions. [2022-11-25 16:44:39,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:44:39,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1235 transitions. [2022-11-25 16:44:39,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 205.83333333333334) internal successors, (1235), 6 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:39,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 458.0) internal successors, (3206), 7 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:39,075 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 458.0) internal successors, (3206), 7 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:39,075 INFO L175 Difference]: Start difference. First operand has 144 places, 92 transitions, 1048 flow. Second operand 6 states and 1235 transitions. [2022-11-25 16:44:39,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 109 transitions, 1350 flow [2022-11-25 16:44:39,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 109 transitions, 1240 flow, removed 5 selfloop flow, removed 23 redundant places. [2022-11-25 16:44:39,104 INFO L231 Difference]: Finished difference. Result has 124 places, 80 transitions, 760 flow [2022-11-25 16:44:39,104 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=760, PETRI_PLACES=124, PETRI_TRANSITIONS=80} [2022-11-25 16:44:39,105 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 83 predicate places. [2022-11-25 16:44:39,105 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 80 transitions, 760 flow [2022-11-25 16:44:39,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 200.14285714285714) internal successors, (1401), 7 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:39,106 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:44:39,106 INFO L209 CegarLoopForPetriNet]: trace histogram [60, 2, 2, 1, 1, 1, 1, 1] [2022-11-25 16:44:39,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 16:44:39,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:44:39,335 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 16:44:39,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:44:39,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1687676831, now seen corresponding path program 1 times [2022-11-25 16:44:39,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:44:39,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339543689] [2022-11-25 16:44:39,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:44:39,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:44:40,214 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 16:44:40,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [879528045] [2022-11-25 16:44:40,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:44:40,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:44:40,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:44:40,222 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:44:40,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 16:44:46,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:44:46,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 14216 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 16:44:46,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:44:47,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 964 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2022-11-25 16:44:47,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:44:47,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 964 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2022-11-25 16:44:47,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:44:47,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339543689] [2022-11-25 16:44:47,215 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 16:44:47,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879528045] [2022-11-25 16:44:47,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879528045] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:44:47,216 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 16:44:47,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-25 16:44:47,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799781009] [2022-11-25 16:44:47,216 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 16:44:47,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 16:44:47,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:44:47,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 16:44:47,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-25 16:44:47,312 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 458 [2022-11-25 16:44:47,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 80 transitions, 760 flow. Second operand has 8 states, 8 states have (on average 205.375) internal successors, (1643), 8 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:47,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:44:47,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 458 [2022-11-25 16:44:47,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:44:48,238 INFO L130 PetriNetUnfolder]: 193/536 cut-off events. [2022-11-25 16:44:48,238 INFO L131 PetriNetUnfolder]: For 4427/4427 co-relation queries the response was YES. [2022-11-25 16:44:48,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2783 conditions, 536 events. 193/536 cut-off events. For 4427/4427 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 964 event pairs, 80 based on Foata normal form. 4/439 useless extension candidates. Maximal degree in co-relation 2727. Up to 303 conditions per place. [2022-11-25 16:44:48,246 INFO L137 encePairwiseOnDemand]: 453/458 looper letters, 220 selfloop transitions, 28 changer transitions 0/252 dead transitions. [2022-11-25 16:44:48,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 252 transitions, 3239 flow [2022-11-25 16:44:48,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 16:44:48,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 16:44:48,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1680 transitions. [2022-11-25 16:44:48,252 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4585152838427948 [2022-11-25 16:44:48,252 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1680 transitions. [2022-11-25 16:44:48,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1680 transitions. [2022-11-25 16:44:48,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:44:48,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1680 transitions. [2022-11-25 16:44:48,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 210.0) internal successors, (1680), 8 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:48,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 458.0) internal successors, (4122), 9 states have internal predecessors, (4122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:48,264 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 458.0) internal successors, (4122), 9 states have internal predecessors, (4122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:48,264 INFO L175 Difference]: Start difference. First operand has 124 places, 80 transitions, 760 flow. Second operand 8 states and 1680 transitions. [2022-11-25 16:44:48,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 252 transitions, 3239 flow [2022-11-25 16:44:48,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 252 transitions, 3203 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-25 16:44:48,309 INFO L231 Difference]: Finished difference. Result has 131 places, 99 transitions, 1295 flow [2022-11-25 16:44:48,309 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1295, PETRI_PLACES=131, PETRI_TRANSITIONS=99} [2022-11-25 16:44:48,310 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 90 predicate places. [2022-11-25 16:44:48,310 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 99 transitions, 1295 flow [2022-11-25 16:44:48,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 205.375) internal successors, (1643), 8 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:44:48,311 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:44:48,311 INFO L209 CegarLoopForPetriNet]: trace histogram [62, 3, 2, 1, 1] [2022-11-25 16:44:48,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-25 16:44:48,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 16:44:48,539 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 16:44:48,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:44:48,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1689472279, now seen corresponding path program 4 times [2022-11-25 16:44:48,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:44:48,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854945844] [2022-11-25 16:44:48,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:44:48,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:44:49,485 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 16:44:49,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1484171947] [2022-11-25 16:44:49,485 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 16:44:49,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:44:49,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:44:49,491 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:44:49,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 16:48:37,732 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 16:48:37,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 16:48:37,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 14680 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-25 16:48:37,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:48:38,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2083 backedges. 0 proven. 1153 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2022-11-25 16:48:38,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:48:50,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2083 backedges. 0 proven. 1153 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2022-11-25 16:48:50,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:48:50,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854945844] [2022-11-25 16:48:50,093 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 16:48:50,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484171947] [2022-11-25 16:48:50,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484171947] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:48:50,094 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 16:48:50,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2022-11-25 16:48:50,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634912309] [2022-11-25 16:48:50,094 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 16:48:50,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 16:48:50,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:48:50,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 16:48:50,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=117, Unknown=3, NotChecked=0, Total=182 [2022-11-25 16:48:52,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-11-25 16:48:54,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-11-25 16:48:56,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-11-25 16:48:58,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-11-25 16:49:00,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-11-25 16:49:03,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-25 16:49:05,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-11-25 16:49:07,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-25 16:49:09,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-25 16:49:11,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-11-25 16:49:13,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-11-25 16:49:15,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-11-25 16:49:15,636 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 458 [2022-11-25 16:49:15,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 99 transitions, 1295 flow. Second operand has 14 states, 14 states have (on average 184.57142857142858) internal successors, (2584), 14 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:15,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:49:15,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 458 [2022-11-25 16:49:15,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:49:32,380 WARN L233 SmtUtils]: Spent 8.04s on a formula simplification. DAG size of input: 22 DAG size of output: 18 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 16:49:41,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-11-25 16:49:42,922 INFO L130 PetriNetUnfolder]: 167/509 cut-off events. [2022-11-25 16:49:42,922 INFO L131 PetriNetUnfolder]: For 5409/5409 co-relation queries the response was YES. [2022-11-25 16:49:42,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2714 conditions, 509 events. 167/509 cut-off events. For 5409/5409 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 936 event pairs, 85 based on Foata normal form. 32/431 useless extension candidates. Maximal degree in co-relation 2653. Up to 271 conditions per place. [2022-11-25 16:49:42,928 INFO L137 encePairwiseOnDemand]: 453/458 looper letters, 163 selfloop transitions, 18 changer transitions 0/184 dead transitions. [2022-11-25 16:49:42,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 184 transitions, 2453 flow [2022-11-25 16:49:42,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 16:49:42,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-25 16:49:42,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2798 transitions. [2022-11-25 16:49:42,937 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40727802037845706 [2022-11-25 16:49:42,938 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2798 transitions. [2022-11-25 16:49:42,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2798 transitions. [2022-11-25 16:49:42,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:49:42,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2798 transitions. [2022-11-25 16:49:42,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 186.53333333333333) internal successors, (2798), 15 states have internal predecessors, (2798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:42,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 458.0) internal successors, (7328), 16 states have internal predecessors, (7328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:42,961 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 458.0) internal successors, (7328), 16 states have internal predecessors, (7328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:42,961 INFO L175 Difference]: Start difference. First operand has 131 places, 99 transitions, 1295 flow. Second operand 15 states and 2798 transitions. [2022-11-25 16:49:42,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 184 transitions, 2453 flow [2022-11-25 16:49:43,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 184 transitions, 2340 flow, removed 45 selfloop flow, removed 4 redundant places. [2022-11-25 16:49:43,016 INFO L231 Difference]: Finished difference. Result has 143 places, 99 transitions, 1184 flow [2022-11-25 16:49:43,016 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=1096, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1184, PETRI_PLACES=143, PETRI_TRANSITIONS=99} [2022-11-25 16:49:43,017 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 102 predicate places. [2022-11-25 16:49:43,017 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 99 transitions, 1184 flow [2022-11-25 16:49:43,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 184.57142857142858) internal successors, (2584), 14 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:49:43,018 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:49:43,019 INFO L209 CegarLoopForPetriNet]: trace histogram [93, 4, 3, 1, 1] [2022-11-25 16:49:43,304 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forcibly destroying the process [2022-11-25 16:49:43,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 16:49:43,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-25 16:49:43,355 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-25 16:49:43,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:49:43,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1235764375, now seen corresponding path program 5 times [2022-11-25 16:49:43,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:49:43,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255814734] [2022-11-25 16:49:43,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:49:43,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:49:44,516 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 16:49:44,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1464108880] [2022-11-25 16:49:44,517 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 16:49:44,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:49:44,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:49:44,519 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:49:44,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56be2295-ecdb-4d95-96e3-955a95ce7703/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process