./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 20:10:28,036 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:10:28,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:10:28,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:10:28,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:10:28,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:10:28,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:10:28,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:10:28,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:10:28,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:10:28,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:10:28,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:10:28,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:10:28,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:10:28,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:10:28,060 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:10:28,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:10:28,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:10:28,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:10:28,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:10:28,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:10:28,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:10:28,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:10:28,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:10:28,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:10:28,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:10:28,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:10:28,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:10:28,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:10:28,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:10:28,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:10:28,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:10:28,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:10:28,084 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:10:28,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:10:28,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:10:28,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:10:28,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:10:28,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:10:28,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:10:28,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:10:28,088 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 20:10:28,115 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:10:28,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:10:28,116 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:10:28,116 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:10:28,117 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:10:28,117 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:10:28,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:10:28,118 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:10:28,118 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:10:28,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:10:28,118 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:10:28,118 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 20:10:28,119 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:10:28,119 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:10:28,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:10:28,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:10:28,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:10:28,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:10:28,129 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 20:10:28,129 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:10:28,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:10:28,130 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:10:28,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:10:28,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:10:28,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:10:28,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:10:28,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:10:28,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:10:28,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:10:28,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:10:28,131 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:10:28,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:10:28,132 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:10:28,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:10:28,132 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:10:28,132 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:10:28,132 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:10:28,132 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_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af [2022-12-13 20:10:28,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:10:28,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:10:28,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:10:28,322 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:10:28,323 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:10:28,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2022-12-13 20:10:30,914 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:10:31,152 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:10:31,153 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2022-12-13 20:10:31,166 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/data/c875c8d76/3e752546cdbc40ab9ad0d26399503783/FLAGc2ab6f2dc [2022-12-13 20:10:31,473 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/data/c875c8d76/3e752546cdbc40ab9ad0d26399503783 [2022-12-13 20:10:31,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:10:31,477 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:10:31,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:10:31,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:10:31,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:10:31,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:10:31" (1/1) ... [2022-12-13 20:10:31,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31204f6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:31, skipping insertion in model container [2022-12-13 20:10:31,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:10:31" (1/1) ... [2022-12-13 20:10:31,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:10:31,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:10:31,893 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_14cfe271-b57b-4e34-a74d-840b921e7710/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2022-12-13 20:10:31,902 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 20:10:31,902 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 20:10:31,902 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 20:10:31,903 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 20:10:31,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:10:31,938 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:10:31,978 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_14cfe271-b57b-4e34-a74d-840b921e7710/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2022-12-13 20:10:31,981 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 20:10:31,982 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 20:10:31,982 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 20:10:31,983 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 20:10:32,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:10:32,050 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:10:32,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:32 WrapperNode [2022-12-13 20:10:32,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:10:32,051 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:10:32,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:10:32,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:10:32,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:32" (1/1) ... [2022-12-13 20:10:32,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:32" (1/1) ... [2022-12-13 20:10:32,097 INFO L138 Inliner]: procedures = 278, calls = 64, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 328 [2022-12-13 20:10:32,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:10:32,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:10:32,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:10:32,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:10:32,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:32" (1/1) ... [2022-12-13 20:10:32,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:32" (1/1) ... [2022-12-13 20:10:32,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:32" (1/1) ... [2022-12-13 20:10:32,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:32" (1/1) ... [2022-12-13 20:10:32,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:32" (1/1) ... [2022-12-13 20:10:32,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:32" (1/1) ... [2022-12-13 20:10:32,121 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:32" (1/1) ... [2022-12-13 20:10:32,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:32" (1/1) ... [2022-12-13 20:10:32,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:10:32,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:10:32,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:10:32,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:10:32,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:32" (1/1) ... [2022-12-13 20:10:32,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:10:32,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:10:32,148 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:10:32,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:10:32,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:10:32,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 20:10:32,173 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-12-13 20:10:32,173 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-12-13 20:10:32,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:10:32,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 20:10:32,173 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-12-13 20:10:32,173 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-12-13 20:10:32,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 20:10:32,173 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 20:10:32,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 20:10:32,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:10:32,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 20:10:32,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:10:32,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:10:32,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:10:32,174 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 20:10:32,294 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:10:32,295 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:10:32,656 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:10:32,666 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:10:32,666 INFO L300 CfgBuilder]: Removed 30 assume(true) statements. [2022-12-13 20:10:32,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:10:32 BoogieIcfgContainer [2022-12-13 20:10:32,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:10:32,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:10:32,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:10:32,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:10:32,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:10:31" (1/3) ... [2022-12-13 20:10:32,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10636a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:10:32, skipping insertion in model container [2022-12-13 20:10:32,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:32" (2/3) ... [2022-12-13 20:10:32,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10636a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:10:32, skipping insertion in model container [2022-12-13 20:10:32,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:10:32" (3/3) ... [2022-12-13 20:10:32,677 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2022-12-13 20:10:32,686 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 20:10:32,696 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:10:32,696 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-12-13 20:10:32,696 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 20:10:32,782 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 20:10:32,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 331 places, 372 transitions, 766 flow [2022-12-13 20:10:32,943 INFO L130 PetriNetUnfolder]: 77/603 cut-off events. [2022-12-13 20:10:32,943 INFO L131 PetriNetUnfolder]: For 8/13 co-relation queries the response was YES. [2022-12-13 20:10:32,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 603 events. 77/603 cut-off events. For 8/13 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3050 event pairs, 0 based on Foata normal form. 0/474 useless extension candidates. Maximal degree in co-relation 303. Up to 8 conditions per place. [2022-12-13 20:10:32,952 INFO L82 GeneralOperation]: Start removeDead. Operand has 331 places, 372 transitions, 766 flow [2022-12-13 20:10:32,960 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 331 places, 372 transitions, 766 flow [2022-12-13 20:10:32,963 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:10:32,971 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 331 places, 372 transitions, 766 flow [2022-12-13 20:10:32,973 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 331 places, 372 transitions, 766 flow [2022-12-13 20:10:32,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 331 places, 372 transitions, 766 flow [2022-12-13 20:10:33,036 INFO L130 PetriNetUnfolder]: 77/603 cut-off events. [2022-12-13 20:10:33,036 INFO L131 PetriNetUnfolder]: For 8/13 co-relation queries the response was YES. [2022-12-13 20:10:33,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 603 events. 77/603 cut-off events. For 8/13 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3050 event pairs, 0 based on Foata normal form. 0/474 useless extension candidates. Maximal degree in co-relation 303. Up to 8 conditions per place. [2022-12-13 20:10:33,058 INFO L119 LiptonReduction]: Number of co-enabled transitions 45816 [2022-12-13 20:10:48,882 WARN L233 SmtUtils]: Spent 5.52s on a formula simplification that was a NOOP. DAG size: 183 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 20:10:56,116 WARN L233 SmtUtils]: Spent 7.23s 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) [2022-12-13 20:11:02,212 WARN L233 SmtUtils]: Spent 6.09s on a formula simplification that was a NOOP. DAG size: 183 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 20:11:08,801 WARN L233 SmtUtils]: Spent 6.59s 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) [2022-12-13 20:11:23,816 WARN L233 SmtUtils]: Spent 15.01s on a formula simplification. DAG size of input: 184 DAG size of output: 182 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 20:11:29,951 WARN L233 SmtUtils]: Spent 6.13s 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) [2022-12-13 20:11:44,157 WARN L233 SmtUtils]: Spent 14.20s on a formula simplification. DAG size of input: 184 DAG size of output: 182 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 20:11:50,965 WARN L233 SmtUtils]: Spent 6.81s 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) [2022-12-13 20:12:02,263 WARN L233 SmtUtils]: Spent 10.98s on a formula simplification. DAG size of input: 184 DAG size of output: 182 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 20:12:07,338 WARN L233 SmtUtils]: Spent 5.07s 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) [2022-12-13 20:12:20,624 WARN L233 SmtUtils]: Spent 13.28s on a formula simplification. DAG size of input: 184 DAG size of output: 182 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 20:12:25,479 INFO L134 LiptonReduction]: Checked pairs total: 75942 [2022-12-13 20:12:25,479 INFO L136 LiptonReduction]: Total number of compositions: 347 [2022-12-13 20:12:25,489 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:12:25,492 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;@18f060a4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:12:25,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2022-12-13 20:12:25,495 INFO L130 PetriNetUnfolder]: 2/7 cut-off events. [2022-12-13 20:12:25,495 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:12:25,495 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:12:25,495 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 20:12:25,496 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 20:12:25,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:12:25,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1501435, now seen corresponding path program 1 times [2022-12-13 20:12:25,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:12:25,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658212007] [2022-12-13 20:12:25,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:12:25,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:12:25,595 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:12:25,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [668966332] [2022-12-13 20:12:25,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:12:25,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:12:25,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:12:25,596 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:12:25,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 20:12:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:25,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:12:25,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:12:25,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:12:25,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:12:25,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:12:25,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658212007] [2022-12-13 20:12:25,700 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:12:25,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668966332] [2022-12-13 20:12:25,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668966332] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:12:25,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:12:25,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:12:25,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609852637] [2022-12-13 20:12:25,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:12:25,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:12:25,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:12:25,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:12:25,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:12:25,750 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 719 [2022-12-13 20:12:25,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 119 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 325.0) internal successors, (975), 3 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:25,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:12:25,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 719 [2022-12-13 20:12:25,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:12:27,353 INFO L130 PetriNetUnfolder]: 11403/17935 cut-off events. [2022-12-13 20:12:27,353 INFO L131 PetriNetUnfolder]: For 252/252 co-relation queries the response was YES. [2022-12-13 20:12:27,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34875 conditions, 17935 events. 11403/17935 cut-off events. For 252/252 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 118593 event pairs, 9873 based on Foata normal form. 1699/12674 useless extension candidates. Maximal degree in co-relation 33120. Up to 16783 conditions per place. [2022-12-13 20:12:27,428 INFO L137 encePairwiseOnDemand]: 688/719 looper letters, 84 selfloop transitions, 3 changer transitions 0/100 dead transitions. [2022-12-13 20:12:27,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 100 transitions, 396 flow [2022-12-13 20:12:27,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:12:27,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:12:27,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1088 transitions. [2022-12-13 20:12:27,455 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5044042651831248 [2022-12-13 20:12:27,456 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1088 transitions. [2022-12-13 20:12:27,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1088 transitions. [2022-12-13 20:12:27,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:12:27,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1088 transitions. [2022-12-13 20:12:27,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 362.6666666666667) internal successors, (1088), 3 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:27,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:27,476 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:27,477 INFO L175 Difference]: Start difference. First operand has 92 places, 119 transitions, 260 flow. Second operand 3 states and 1088 transitions. [2022-12-13 20:12:27,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 100 transitions, 396 flow [2022-12-13 20:12:27,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 100 transitions, 396 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:12:27,484 INFO L231 Difference]: Finished difference. Result has 93 places, 98 transitions, 244 flow [2022-12-13 20:12:27,486 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=93, PETRI_TRANSITIONS=98} [2022-12-13 20:12:27,489 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 1 predicate places. [2022-12-13 20:12:27,489 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 98 transitions, 244 flow [2022-12-13 20:12:27,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 325.0) internal successors, (975), 3 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:27,490 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:12:27,490 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 20:12:27,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 20:12:27,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-13 20:12:27,692 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 20:12:27,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:12:27,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1501696, now seen corresponding path program 1 times [2022-12-13 20:12:27,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:12:27,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409807240] [2022-12-13 20:12:27,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:12:27,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:12:27,791 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:12:27,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2012289300] [2022-12-13 20:12:27,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:12:27,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:12:27,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:12:27,795 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:12:27,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 20:12:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:27,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:12:27,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:12:27,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:12:27,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:12:27,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:12:27,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409807240] [2022-12-13 20:12:27,930 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:12:27,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012289300] [2022-12-13 20:12:27,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012289300] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:12:27,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:12:27,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:12:27,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078756342] [2022-12-13 20:12:27,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:12:27,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:12:27,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:12:27,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:12:27,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:12:27,975 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 719 [2022-12-13 20:12:27,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 98 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:27,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:12:27,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 719 [2022-12-13 20:12:27,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:12:29,256 INFO L130 PetriNetUnfolder]: 11402/17933 cut-off events. [2022-12-13 20:12:29,256 INFO L131 PetriNetUnfolder]: For 256/256 co-relation queries the response was YES. [2022-12-13 20:12:29,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34883 conditions, 17933 events. 11402/17933 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 118542 event pairs, 9873 based on Foata normal form. 2/10980 useless extension candidates. Maximal degree in co-relation 34865. Up to 16784 conditions per place. [2022-12-13 20:12:29,311 INFO L137 encePairwiseOnDemand]: 717/719 looper letters, 83 selfloop transitions, 1 changer transitions 0/97 dead transitions. [2022-12-13 20:12:29,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 97 transitions, 404 flow [2022-12-13 20:12:29,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:12:29,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:12:29,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1062 transitions. [2022-12-13 20:12:29,314 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49235048678720444 [2022-12-13 20:12:29,314 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1062 transitions. [2022-12-13 20:12:29,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1062 transitions. [2022-12-13 20:12:29,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:12:29,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1062 transitions. [2022-12-13 20:12:29,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 354.0) internal successors, (1062), 3 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:29,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:29,323 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:29,323 INFO L175 Difference]: Start difference. First operand has 93 places, 98 transitions, 244 flow. Second operand 3 states and 1062 transitions. [2022-12-13 20:12:29,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 97 transitions, 404 flow [2022-12-13 20:12:29,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 97 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:12:29,327 INFO L231 Difference]: Finished difference. Result has 93 places, 97 transitions, 237 flow [2022-12-13 20:12:29,327 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=237, PETRI_PLACES=93, PETRI_TRANSITIONS=97} [2022-12-13 20:12:29,328 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 1 predicate places. [2022-12-13 20:12:29,328 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 97 transitions, 237 flow [2022-12-13 20:12:29,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:29,329 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:12:29,329 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2022-12-13 20:12:29,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 20:12:29,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:12:29,530 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 20:12:29,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:12:29,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1443123482, now seen corresponding path program 1 times [2022-12-13 20:12:29,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:12:29,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939893435] [2022-12-13 20:12:29,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:12:29,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:12:29,551 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:12:29,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1257578324] [2022-12-13 20:12:29,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:12:29,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:12:29,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:12:29,553 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:12:29,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 20:12:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:29,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 20:12:29,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:12:29,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:12:29,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:12:29,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:12:29,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939893435] [2022-12-13 20:12:29,630 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:12:29,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257578324] [2022-12-13 20:12:29,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257578324] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:12:29,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:12:29,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:12:29,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785394822] [2022-12-13 20:12:29,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:12:29,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:12:29,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:12:29,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:12:29,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:12:29,645 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 719 [2022-12-13 20:12:29,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 97 transitions, 237 flow. Second operand has 3 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:29,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:12:29,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 719 [2022-12-13 20:12:29,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:12:30,933 INFO L130 PetriNetUnfolder]: 11402/17937 cut-off events. [2022-12-13 20:12:30,933 INFO L131 PetriNetUnfolder]: For 254/254 co-relation queries the response was YES. [2022-12-13 20:12:30,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34894 conditions, 17937 events. 11402/17937 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 118603 event pairs, 9873 based on Foata normal form. 1/10982 useless extension candidates. Maximal degree in co-relation 34881. Up to 16786 conditions per place. [2022-12-13 20:12:30,999 INFO L137 encePairwiseOnDemand]: 714/719 looper letters, 84 selfloop transitions, 3 changer transitions 0/100 dead transitions. [2022-12-13 20:12:30,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 100 transitions, 421 flow [2022-12-13 20:12:30,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:12:31,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:12:31,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1066 transitions. [2022-12-13 20:12:31,002 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49420491423273066 [2022-12-13 20:12:31,002 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1066 transitions. [2022-12-13 20:12:31,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1066 transitions. [2022-12-13 20:12:31,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:12:31,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1066 transitions. [2022-12-13 20:12:31,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 355.3333333333333) internal successors, (1066), 3 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:31,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:31,008 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:31,008 INFO L175 Difference]: Start difference. First operand has 93 places, 97 transitions, 237 flow. Second operand 3 states and 1066 transitions. [2022-12-13 20:12:31,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 100 transitions, 421 flow [2022-12-13 20:12:31,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 100 transitions, 421 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:12:31,011 INFO L231 Difference]: Finished difference. Result has 96 places, 98 transitions, 258 flow [2022-12-13 20:12:31,011 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=96, PETRI_TRANSITIONS=98} [2022-12-13 20:12:31,012 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 4 predicate places. [2022-12-13 20:12:31,012 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 98 transitions, 258 flow [2022-12-13 20:12:31,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:31,013 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:12:31,013 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 20:12:31,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 20:12:31,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:12:31,214 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 20:12:31,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:12:31,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1788859777, now seen corresponding path program 1 times [2022-12-13 20:12:31,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:12:31,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731449224] [2022-12-13 20:12:31,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:12:31,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:12:31,241 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:12:31,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1877946195] [2022-12-13 20:12:31,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:12:31,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:12:31,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:12:31,243 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:12:31,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 20:12:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:31,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:12:31,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:12:31,396 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:12:31,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:12:31,411 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:12:31,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:12:31,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731449224] [2022-12-13 20:12:31,412 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:12:31,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877946195] [2022-12-13 20:12:31,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877946195] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:12:31,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:12:31,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-12-13 20:12:31,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836467246] [2022-12-13 20:12:31,412 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:12:31,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:12:31,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:12:31,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:12:31,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:12:31,470 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 719 [2022-12-13 20:12:31,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 98 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 326.5) internal successors, (1959), 6 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:31,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:12:31,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 719 [2022-12-13 20:12:31,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:12:32,917 INFO L130 PetriNetUnfolder]: 11404/17949 cut-off events. [2022-12-13 20:12:32,917 INFO L131 PetriNetUnfolder]: For 256/256 co-relation queries the response was YES. [2022-12-13 20:12:32,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34944 conditions, 17949 events. 11404/17949 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 118625 event pairs, 9873 based on Foata normal form. 6/10997 useless extension candidates. Maximal degree in co-relation 34928. Up to 16784 conditions per place. [2022-12-13 20:12:32,979 INFO L137 encePairwiseOnDemand]: 712/719 looper letters, 88 selfloop transitions, 8 changer transitions 0/109 dead transitions. [2022-12-13 20:12:32,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 109 transitions, 494 flow [2022-12-13 20:12:32,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:12:32,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:12:32,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2053 transitions. [2022-12-13 20:12:32,984 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4758924432081595 [2022-12-13 20:12:32,984 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2053 transitions. [2022-12-13 20:12:32,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2053 transitions. [2022-12-13 20:12:32,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:12:32,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2053 transitions. [2022-12-13 20:12:32,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 342.1666666666667) internal successors, (2053), 6 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:32,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 719.0) internal successors, (5033), 7 states have internal predecessors, (5033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:32,996 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 719.0) internal successors, (5033), 7 states have internal predecessors, (5033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:32,996 INFO L175 Difference]: Start difference. First operand has 96 places, 98 transitions, 258 flow. Second operand 6 states and 2053 transitions. [2022-12-13 20:12:32,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 109 transitions, 494 flow [2022-12-13 20:12:32,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 109 transitions, 491 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:12:32,999 INFO L231 Difference]: Finished difference. Result has 104 places, 103 transitions, 334 flow [2022-12-13 20:12:32,999 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=334, PETRI_PLACES=104, PETRI_TRANSITIONS=103} [2022-12-13 20:12:33,000 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 12 predicate places. [2022-12-13 20:12:33,000 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 103 transitions, 334 flow [2022-12-13 20:12:33,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 326.5) internal successors, (1959), 6 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:33,001 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:12:33,001 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2022-12-13 20:12:33,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 20:12:33,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:12:33,202 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 20:12:33,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:12:33,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1660269274, now seen corresponding path program 2 times [2022-12-13 20:12:33,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:12:33,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695860057] [2022-12-13 20:12:33,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:12:33,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:12:33,294 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:12:33,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [800061645] [2022-12-13 20:12:33,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:12:33,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:12:33,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:12:33,295 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:12:33,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 20:12:33,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 20:12:33,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:12:33,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:12:33,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:12:33,447 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 20:12:33,447 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:12:33,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:12:33,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695860057] [2022-12-13 20:12:33,447 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:12:33,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800061645] [2022-12-13 20:12:33,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800061645] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:12:33,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:12:33,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:12:33,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529157939] [2022-12-13 20:12:33,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:12:33,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:12:33,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:12:33,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:12:33,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:12:33,466 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 719 [2022-12-13 20:12:33,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 103 transitions, 334 flow. Second operand has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:33,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:12:33,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 719 [2022-12-13 20:12:33,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:12:34,957 INFO L130 PetriNetUnfolder]: 11404/17947 cut-off events. [2022-12-13 20:12:34,958 INFO L131 PetriNetUnfolder]: For 265/265 co-relation queries the response was YES. [2022-12-13 20:12:34,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34981 conditions, 17947 events. 11404/17947 cut-off events. For 265/265 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 118694 event pairs, 9873 based on Foata normal form. 1/10991 useless extension candidates. Maximal degree in co-relation 34960. Up to 16798 conditions per place. [2022-12-13 20:12:35,022 INFO L137 encePairwiseOnDemand]: 715/719 looper letters, 87 selfloop transitions, 3 changer transitions 0/103 dead transitions. [2022-12-13 20:12:35,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 103 transitions, 514 flow [2022-12-13 20:12:35,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:12:35,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:12:35,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1057 transitions. [2022-12-13 20:12:35,025 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4900324524802967 [2022-12-13 20:12:35,025 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1057 transitions. [2022-12-13 20:12:35,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1057 transitions. [2022-12-13 20:12:35,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:12:35,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1057 transitions. [2022-12-13 20:12:35,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 352.3333333333333) internal successors, (1057), 3 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:35,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:35,031 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:35,031 INFO L175 Difference]: Start difference. First operand has 104 places, 103 transitions, 334 flow. Second operand 3 states and 1057 transitions. [2022-12-13 20:12:35,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 103 transitions, 514 flow [2022-12-13 20:12:35,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 103 transitions, 503 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 20:12:35,034 INFO L231 Difference]: Finished difference. Result has 106 places, 103 transitions, 336 flow [2022-12-13 20:12:35,034 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=106, PETRI_TRANSITIONS=103} [2022-12-13 20:12:35,035 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 14 predicate places. [2022-12-13 20:12:35,035 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 103 transitions, 336 flow [2022-12-13 20:12:35,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:35,035 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:12:35,035 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2022-12-13 20:12:35,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-13 20:12:35,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:12:35,237 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 20:12:35,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:12:35,238 INFO L85 PathProgramCache]: Analyzing trace with hash -71250653, now seen corresponding path program 3 times [2022-12-13 20:12:35,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:12:35,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264332569] [2022-12-13 20:12:35,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:12:35,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:12:35,308 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:12:35,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2079356245] [2022-12-13 20:12:35,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 20:12:35,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:12:35,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:12:35,310 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:12:35,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 20:12:35,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 20:12:35,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:12:35,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:12:35,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:12:35,567 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 20:12:35,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:12:35,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:12:35,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264332569] [2022-12-13 20:12:35,568 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:12:35,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079356245] [2022-12-13 20:12:35,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079356245] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:12:35,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:12:35,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:12:35,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740209909] [2022-12-13 20:12:35,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:12:35,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:12:35,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:12:35,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:12:35,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:12:35,628 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 719 [2022-12-13 20:12:35,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 103 transitions, 336 flow. Second operand has 6 states, 6 states have (on average 322.1666666666667) internal successors, (1933), 6 states have internal predecessors, (1933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:35,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:12:35,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 719 [2022-12-13 20:12:35,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:12:37,070 INFO L130 PetriNetUnfolder]: 11403/17942 cut-off events. [2022-12-13 20:12:37,070 INFO L131 PetriNetUnfolder]: For 293/293 co-relation queries the response was YES. [2022-12-13 20:12:37,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34958 conditions, 17942 events. 11403/17942 cut-off events. For 293/293 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 118633 event pairs, 9873 based on Foata normal form. 0/10990 useless extension candidates. Maximal degree in co-relation 34935. Up to 16786 conditions per place. [2022-12-13 20:12:37,218 INFO L137 encePairwiseOnDemand]: 713/719 looper letters, 88 selfloop transitions, 4 changer transitions 0/105 dead transitions. [2022-12-13 20:12:37,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 105 transitions, 523 flow [2022-12-13 20:12:37,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:12:37,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 20:12:37,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1691 transitions. [2022-12-13 20:12:37,221 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47037552155771906 [2022-12-13 20:12:37,221 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1691 transitions. [2022-12-13 20:12:37,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1691 transitions. [2022-12-13 20:12:37,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:12:37,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1691 transitions. [2022-12-13 20:12:37,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 338.2) internal successors, (1691), 5 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:37,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:37,227 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 719.0) internal successors, (4314), 6 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:37,227 INFO L175 Difference]: Start difference. First operand has 106 places, 103 transitions, 336 flow. Second operand 5 states and 1691 transitions. [2022-12-13 20:12:37,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 105 transitions, 523 flow [2022-12-13 20:12:37,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 105 transitions, 515 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:12:37,229 INFO L231 Difference]: Finished difference. Result has 107 places, 101 transitions, 319 flow [2022-12-13 20:12:37,229 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=319, PETRI_PLACES=107, PETRI_TRANSITIONS=101} [2022-12-13 20:12:37,230 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 15 predicate places. [2022-12-13 20:12:37,230 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 101 transitions, 319 flow [2022-12-13 20:12:37,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 322.1666666666667) internal successors, (1933), 6 states have internal predecessors, (1933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:37,230 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:12:37,230 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2022-12-13 20:12:37,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 20:12:37,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 20:12:37,431 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 20:12:37,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:12:37,432 INFO L85 PathProgramCache]: Analyzing trace with hash -71250558, now seen corresponding path program 1 times [2022-12-13 20:12:37,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:12:37,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337729976] [2022-12-13 20:12:37,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:12:37,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:12:37,470 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:12:37,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [959638296] [2022-12-13 20:12:37,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:12:37,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:12:37,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:12:37,471 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:12:37,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 20:12:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:37,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 1302 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:12:37,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:12:37,775 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:12:37,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:12:37,807 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:12:37,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:12:37,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337729976] [2022-12-13 20:12:37,807 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:12:37,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959638296] [2022-12-13 20:12:37,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959638296] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:12:37,807 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:12:37,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-12-13 20:12:37,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385585468] [2022-12-13 20:12:37,808 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:12:37,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 20:12:37,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:12:37,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 20:12:37,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-12-13 20:12:37,945 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 719 [2022-12-13 20:12:37,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 101 transitions, 319 flow. Second operand has 12 states, 12 states have (on average 326.3333333333333) internal successors, (3916), 12 states have internal predecessors, (3916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:37,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:12:37,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 719 [2022-12-13 20:12:37,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:12:40,166 INFO L130 PetriNetUnfolder]: 11403/17960 cut-off events. [2022-12-13 20:12:40,166 INFO L131 PetriNetUnfolder]: For 396/396 co-relation queries the response was YES. [2022-12-13 20:12:40,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35039 conditions, 17960 events. 11403/17960 cut-off events. For 396/396 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 118739 event pairs, 9873 based on Foata normal form. 12/11020 useless extension candidates. Maximal degree in co-relation 35015. Up to 16783 conditions per place. [2022-12-13 20:12:40,245 INFO L137 encePairwiseOnDemand]: 714/719 looper letters, 88 selfloop transitions, 14 changer transitions 0/115 dead transitions. [2022-12-13 20:12:40,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 115 transitions, 623 flow [2022-12-13 20:12:40,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 20:12:40,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 20:12:40,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4011 transitions. [2022-12-13 20:12:40,253 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4648817802503477 [2022-12-13 20:12:40,254 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4011 transitions. [2022-12-13 20:12:40,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4011 transitions. [2022-12-13 20:12:40,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:12:40,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4011 transitions. [2022-12-13 20:12:40,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 334.25) internal successors, (4011), 12 states have internal predecessors, (4011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:40,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 719.0) internal successors, (9347), 13 states have internal predecessors, (9347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:40,272 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 719.0) internal successors, (9347), 13 states have internal predecessors, (9347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:40,272 INFO L175 Difference]: Start difference. First operand has 107 places, 101 transitions, 319 flow. Second operand 12 states and 4011 transitions. [2022-12-13 20:12:40,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 115 transitions, 623 flow [2022-12-13 20:12:40,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 115 transitions, 617 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-12-13 20:12:40,275 INFO L231 Difference]: Finished difference. Result has 122 places, 108 transitions, 442 flow [2022-12-13 20:12:40,275 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=442, PETRI_PLACES=122, PETRI_TRANSITIONS=108} [2022-12-13 20:12:40,276 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 30 predicate places. [2022-12-13 20:12:40,276 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 108 transitions, 442 flow [2022-12-13 20:12:40,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 326.3333333333333) internal successors, (3916), 12 states have internal predecessors, (3916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:40,277 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:12:40,277 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 2, 1, 1, 1] [2022-12-13 20:12:40,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 20:12:40,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 20:12:40,479 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 20:12:40,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:12:40,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1607889634, now seen corresponding path program 2 times [2022-12-13 20:12:40,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:12:40,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820303233] [2022-12-13 20:12:40,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:12:40,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:12:40,604 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:12:40,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [113671414] [2022-12-13 20:12:40,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:12:40,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:12:40,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:12:40,606 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:12:40,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 20:12:41,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 20:12:41,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:12:41,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 2706 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 20:12:41,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:12:41,214 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:12:41,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:12:41,349 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:12:41,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:12:41,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820303233] [2022-12-13 20:12:41,350 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:12:41,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113671414] [2022-12-13 20:12:41,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113671414] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:12:41,350 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:12:41,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-12-13 20:12:41,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803802472] [2022-12-13 20:12:41,350 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:12:41,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 20:12:41,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:12:41,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 20:12:41,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-12-13 20:12:41,512 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 719 [2022-12-13 20:12:41,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 108 transitions, 442 flow. Second operand has 24 states, 24 states have (on average 326.1666666666667) internal successors, (7828), 24 states have internal predecessors, (7828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:41,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:12:41,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 719 [2022-12-13 20:12:41,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:12:45,468 INFO L130 PetriNetUnfolder]: 11403/17996 cut-off events. [2022-12-13 20:12:45,468 INFO L131 PetriNetUnfolder]: For 1491/1491 co-relation queries the response was YES. [2022-12-13 20:12:45,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35310 conditions, 17996 events. 11403/17996 cut-off events. For 1491/1491 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 119124 event pairs, 9873 based on Foata normal form. 24/11068 useless extension candidates. Maximal degree in co-relation 35280. Up to 16783 conditions per place. [2022-12-13 20:12:45,545 INFO L137 encePairwiseOnDemand]: 714/719 looper letters, 100 selfloop transitions, 26 changer transitions 0/139 dead transitions. [2022-12-13 20:12:45,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 139 transitions, 1000 flow [2022-12-13 20:12:45,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 20:12:45,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-13 20:12:45,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 7947 transitions. [2022-12-13 20:12:45,556 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4605354659248957 [2022-12-13 20:12:45,556 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 7947 transitions. [2022-12-13 20:12:45,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 7947 transitions. [2022-12-13 20:12:45,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:12:45,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 7947 transitions. [2022-12-13 20:12:45,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 331.125) internal successors, (7947), 24 states have internal predecessors, (7947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:45,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 719.0) internal successors, (17975), 25 states have internal predecessors, (17975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:45,584 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 719.0) internal successors, (17975), 25 states have internal predecessors, (17975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:45,584 INFO L175 Difference]: Start difference. First operand has 122 places, 108 transitions, 442 flow. Second operand 24 states and 7947 transitions. [2022-12-13 20:12:45,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 139 transitions, 1000 flow [2022-12-13 20:12:45,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 139 transitions, 932 flow, removed 19 selfloop flow, removed 4 redundant places. [2022-12-13 20:12:45,588 INFO L231 Difference]: Finished difference. Result has 154 places, 121 transitions, 655 flow [2022-12-13 20:12:45,588 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=655, PETRI_PLACES=154, PETRI_TRANSITIONS=121} [2022-12-13 20:12:45,589 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 62 predicate places. [2022-12-13 20:12:45,589 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 121 transitions, 655 flow [2022-12-13 20:12:45,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 326.1666666666667) internal successors, (7828), 24 states have internal predecessors, (7828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:45,590 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:12:45,590 INFO L209 CegarLoopForPetriNet]: trace histogram [23, 2, 1, 1, 1] [2022-12-13 20:12:45,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 20:12:45,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 20:12:45,791 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 20:12:45,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:12:45,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1415895646, now seen corresponding path program 3 times [2022-12-13 20:12:45,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:12:45,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903192964] [2022-12-13 20:12:45,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:12:45,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:12:45,988 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:12:45,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1515240025] [2022-12-13 20:12:45,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 20:12:45,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:12:45,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:12:45,989 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:12:45,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 20:12:46,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 20:12:46,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:12:46,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 20:12:46,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:12:46,689 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-12-13 20:12:46,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:12:46,779 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-12-13 20:12:46,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:12:46,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903192964] [2022-12-13 20:12:46,779 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:12:46,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515240025] [2022-12-13 20:12:46,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515240025] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:12:46,779 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:12:46,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-12-13 20:12:46,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992270936] [2022-12-13 20:12:46,780 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:12:46,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 20:12:46,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:12:46,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 20:12:46,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 20:12:47,080 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 719 [2022-12-13 20:12:47,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 121 transitions, 655 flow. Second operand has 10 states, 10 states have (on average 319.4) internal successors, (3194), 10 states have internal predecessors, (3194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:47,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:12:47,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 719 [2022-12-13 20:12:47,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:12:56,657 INFO L130 PetriNetUnfolder]: 22803/35944 cut-off events. [2022-12-13 20:12:56,657 INFO L131 PetriNetUnfolder]: For 1494/1494 co-relation queries the response was YES. [2022-12-13 20:12:56,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70377 conditions, 35944 events. 22803/35944 cut-off events. For 1494/1494 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 239146 event pairs, 19746 based on Foata normal form. 24/22138 useless extension candidates. Maximal degree in co-relation 70333. Up to 16818 conditions per place. [2022-12-13 20:12:56,884 INFO L137 encePairwiseOnDemand]: 712/719 looper letters, 218 selfloop transitions, 11 changer transitions 0/242 dead transitions. [2022-12-13 20:12:56,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 242 transitions, 1751 flow [2022-12-13 20:12:56,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 20:12:56,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 20:12:56,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3668 transitions. [2022-12-13 20:12:56,890 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4637754456947781 [2022-12-13 20:12:56,890 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3668 transitions. [2022-12-13 20:12:56,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3668 transitions. [2022-12-13 20:12:56,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:12:56,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3668 transitions. [2022-12-13 20:12:56,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 333.45454545454544) internal successors, (3668), 11 states have internal predecessors, (3668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:56,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 719.0) internal successors, (8628), 12 states have internal predecessors, (8628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:56,903 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 719.0) internal successors, (8628), 12 states have internal predecessors, (8628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:56,903 INFO L175 Difference]: Start difference. First operand has 154 places, 121 transitions, 655 flow. Second operand 11 states and 3668 transitions. [2022-12-13 20:12:56,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 242 transitions, 1751 flow [2022-12-13 20:12:56,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 242 transitions, 1604 flow, removed 42 selfloop flow, removed 10 redundant places. [2022-12-13 20:12:56,913 INFO L231 Difference]: Finished difference. Result has 157 places, 126 transitions, 692 flow [2022-12-13 20:12:56,913 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=692, PETRI_PLACES=157, PETRI_TRANSITIONS=126} [2022-12-13 20:12:56,914 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 65 predicate places. [2022-12-13 20:12:56,914 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 126 transitions, 692 flow [2022-12-13 20:12:56,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 319.4) internal successors, (3194), 10 states have internal predecessors, (3194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:12:56,915 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:12:56,915 INFO L209 CegarLoopForPetriNet]: trace histogram [44, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 20:12:56,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 20:12:57,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:12:57,115 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 20:12:57,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:12:57,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1376517296, now seen corresponding path program 1 times [2022-12-13 20:12:57,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:12:57,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195418838] [2022-12-13 20:12:57,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:12:57,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:12:57,363 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:12:57,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1737133566] [2022-12-13 20:12:57,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:12:57,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:12:57,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:12:57,364 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:12:57,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 20:12:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:59,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 10472 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 20:12:59,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:12:59,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 531 proven. 253 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-12-13 20:12:59,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:12:59,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 531 proven. 253 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-12-13 20:12:59,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:12:59,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195418838] [2022-12-13 20:12:59,796 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:12:59,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737133566] [2022-12-13 20:12:59,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737133566] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:12:59,796 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:12:59,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2022-12-13 20:12:59,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846804426] [2022-12-13 20:12:59,796 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:12:59,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 20:12:59,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:12:59,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 20:12:59,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-12-13 20:13:00,073 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 719 [2022-12-13 20:13:00,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 126 transitions, 692 flow. Second operand has 32 states, 32 states have (on average 326.28125) internal successors, (10441), 32 states have internal predecessors, (10441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:00,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:13:00,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 719 [2022-12-13 20:13:00,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:13:06,364 INFO L130 PetriNetUnfolder]: 22803/35974 cut-off events. [2022-12-13 20:13:06,365 INFO L131 PetriNetUnfolder]: For 8027/8027 co-relation queries the response was YES. [2022-12-13 20:13:06,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70497 conditions, 35974 events. 22803/35974 cut-off events. For 8027/8027 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 238158 event pairs, 19746 based on Foata normal form. 24/22096 useless extension candidates. Maximal degree in co-relation 70448. Up to 33559 conditions per place. [2022-12-13 20:13:06,560 INFO L137 encePairwiseOnDemand]: 715/719 looper letters, 107 selfloop transitions, 39 changer transitions 0/159 dead transitions. [2022-12-13 20:13:06,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 159 transitions, 1383 flow [2022-12-13 20:13:06,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-13 20:13:06,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-13 20:13:06,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 10545 transitions. [2022-12-13 20:13:06,573 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45831884561891517 [2022-12-13 20:13:06,573 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 10545 transitions. [2022-12-13 20:13:06,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 10545 transitions. [2022-12-13 20:13:06,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:13:06,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 10545 transitions. [2022-12-13 20:13:06,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 329.53125) internal successors, (10545), 32 states have internal predecessors, (10545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:06,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 719.0) internal successors, (23727), 33 states have internal predecessors, (23727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:06,602 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 719.0) internal successors, (23727), 33 states have internal predecessors, (23727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:06,602 INFO L175 Difference]: Start difference. First operand has 157 places, 126 transitions, 692 flow. Second operand 32 states and 10545 transitions. [2022-12-13 20:13:06,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 159 transitions, 1383 flow [2022-12-13 20:13:06,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 159 transitions, 1363 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-12-13 20:13:06,613 INFO L231 Difference]: Finished difference. Result has 193 places, 135 transitions, 889 flow [2022-12-13 20:13:06,613 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=889, PETRI_PLACES=193, PETRI_TRANSITIONS=135} [2022-12-13 20:13:06,613 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 101 predicate places. [2022-12-13 20:13:06,613 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 135 transitions, 889 flow [2022-12-13 20:13:06,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 326.28125) internal successors, (10441), 32 states have internal predecessors, (10441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:13:06,614 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:13:06,614 INFO L209 CegarLoopForPetriNet]: trace histogram [62, 3, 2, 1, 1] [2022-12-13 20:13:06,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 20:13:06,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 20:13:06,815 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 20:13:06,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:13:06,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1030958392, now seen corresponding path program 4 times [2022-12-13 20:13:06,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:13:06,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120236954] [2022-12-13 20:13:06,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:13:06,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:13:07,201 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:13:07,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [758444515] [2022-12-13 20:13:07,201 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 20:13:07,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:13:07,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:13:07,202 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:13:07,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 20:14:56,719 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 20:14:56,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:14:56,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 14680 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-13 20:14:56,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:14:57,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2083 backedges. 0 proven. 1153 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2022-12-13 20:14:57,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:15:11,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2083 backedges. 0 proven. 189 refuted. 964 times theorem prover too weak. 930 trivial. 0 not checked. [2022-12-13 20:15:11,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:15:11,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120236954] [2022-12-13 20:15:11,141 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:15:11,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758444515] [2022-12-13 20:15:11,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758444515] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:15:11,141 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:15:11,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2022-12-13 20:15:11,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831657955] [2022-12-13 20:15:11,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:15:11,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 20:15:11,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:15:11,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 20:15:11,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=114, Unknown=6, NotChecked=0, Total=182 [2022-12-13 20:15:13,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:15:15,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:15:16,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:15:18,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:15:20,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:15:22,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:15:24,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:15:26,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:15:28,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:15:30,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:15:32,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:15:34,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:15:36,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:15:38,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:15:40,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:15:42,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:15:45,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:15:45,002 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 719 [2022-12-13 20:15:45,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 135 transitions, 889 flow. Second operand has 14 states, 14 states have (on average 304.57142857142856) internal successors, (4264), 14 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:15:45,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:15:45,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 719 [2022-12-13 20:15:45,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:16:12,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:16:14,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:16:16,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:16:18,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:16:20,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:16:22,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:16:24,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:16:26,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:16:28,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:16:30,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:16:32,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:16:34,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:16:36,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:16:38,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:16:40,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:16:42,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:16:44,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:16:46,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:16:48,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:16:50,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:16:52,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:16:54,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:16:56,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:16:58,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:17:00,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:17:02,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:17:04,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:17:06,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:17:08,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2022-12-13 20:17:11,489 INFO L130 PetriNetUnfolder]: 24706/38780 cut-off events. [2022-12-13 20:17:11,489 INFO L131 PetriNetUnfolder]: For 3231/3231 co-relation queries the response was YES. [2022-12-13 20:17:11,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76510 conditions, 38780 events. 24706/38780 cut-off events. For 3231/3231 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 249515 event pairs, 21520 based on Foata normal form. 31/23155 useless extension candidates. Maximal degree in co-relation 76452. Up to 18257 conditions per place. [2022-12-13 20:17:11,702 INFO L137 encePairwiseOnDemand]: 713/719 looper letters, 276 selfloop transitions, 15 changer transitions 0/302 dead transitions. [2022-12-13 20:17:11,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 302 transitions, 2613 flow [2022-12-13 20:17:11,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 20:17:11,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-13 20:17:11,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4722 transitions. [2022-12-13 20:17:11,707 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43783031988873433 [2022-12-13 20:17:11,707 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4722 transitions. [2022-12-13 20:17:11,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4722 transitions. [2022-12-13 20:17:11,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:17:11,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4722 transitions. [2022-12-13 20:17:11,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 314.8) internal successors, (4722), 15 states have internal predecessors, (4722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:17:11,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 719.0) internal successors, (11504), 16 states have internal predecessors, (11504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:17:11,720 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 719.0) internal successors, (11504), 16 states have internal predecessors, (11504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:17:11,720 INFO L175 Difference]: Start difference. First operand has 193 places, 135 transitions, 889 flow. Second operand 15 states and 4722 transitions. [2022-12-13 20:17:11,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 302 transitions, 2613 flow [2022-12-13 20:17:11,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 302 transitions, 2354 flow, removed 40 selfloop flow, removed 22 redundant places. [2022-12-13 20:17:11,734 INFO L231 Difference]: Finished difference. Result has 189 places, 141 transitions, 974 flow [2022-12-13 20:17:11,734 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=974, PETRI_PLACES=189, PETRI_TRANSITIONS=141} [2022-12-13 20:17:11,734 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 97 predicate places. [2022-12-13 20:17:11,734 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 141 transitions, 974 flow [2022-12-13 20:17:11,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 304.57142857142856) internal successors, (4264), 14 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:17:11,735 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:17:11,735 INFO L209 CegarLoopForPetriNet]: trace histogram [90, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 20:17:11,935 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forcibly destroying the process [2022-12-13 20:17:11,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 137 [2022-12-13 20:17:11,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:17:11,985 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 20:17:11,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:17:11,986 INFO L85 PathProgramCache]: Analyzing trace with hash 167362767, now seen corresponding path program 2 times [2022-12-13 20:17:11,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:17:11,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144086283] [2022-12-13 20:17:11,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:17:11,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:17:12,508 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:17:12,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1657648120] [2022-12-13 20:17:12,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:17:12,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:17:12,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:17:12,510 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:17:12,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 20:17:14,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 20:17:14,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:17:14,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:17:14,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:17:14,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4284 trivial. 0 not checked. [2022-12-13 20:17:14,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:17:14,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:17:14,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144086283] [2022-12-13 20:17:14,817 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:17:14,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657648120] [2022-12-13 20:17:14,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657648120] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:17:14,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:17:14,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:17:14,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178714382] [2022-12-13 20:17:14,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:17:14,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:17:14,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:17:14,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:17:14,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:17:14,827 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 719 [2022-12-13 20:17:14,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 141 transitions, 974 flow. Second operand has 3 states, 3 states have (on average 328.6666666666667) internal successors, (986), 3 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:17:14,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:17:14,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 719 [2022-12-13 20:17:14,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:17:20,435 INFO L130 PetriNetUnfolder]: 22756/35906 cut-off events. [2022-12-13 20:17:20,435 INFO L131 PetriNetUnfolder]: For 3151/3151 co-relation queries the response was YES. [2022-12-13 20:17:20,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70606 conditions, 35906 events. 22756/35906 cut-off events. For 3151/3151 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 237337 event pairs, 19704 based on Foata normal form. 0/22064 useless extension candidates. Maximal degree in co-relation 70543. Up to 33458 conditions per place. [2022-12-13 20:17:20,676 INFO L137 encePairwiseOnDemand]: 717/719 looper letters, 126 selfloop transitions, 1 changer transitions 0/140 dead transitions. [2022-12-13 20:17:20,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 140 transitions, 1226 flow [2022-12-13 20:17:20,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:17:20,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:17:20,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1057 transitions. [2022-12-13 20:17:20,678 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4900324524802967 [2022-12-13 20:17:20,678 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1057 transitions. [2022-12-13 20:17:20,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1057 transitions. [2022-12-13 20:17:20,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:17:20,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1057 transitions. [2022-12-13 20:17:20,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 352.3333333333333) internal successors, (1057), 3 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:17:20,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:17:20,681 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 719.0) internal successors, (2876), 4 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:17:20,681 INFO L175 Difference]: Start difference. First operand has 189 places, 141 transitions, 974 flow. Second operand 3 states and 1057 transitions. [2022-12-13 20:17:20,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 140 transitions, 1226 flow [2022-12-13 20:17:20,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 140 transitions, 1204 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-12-13 20:17:20,697 INFO L231 Difference]: Finished difference. Result has 184 places, 140 transitions, 952 flow [2022-12-13 20:17:20,697 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=950, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=952, PETRI_PLACES=184, PETRI_TRANSITIONS=140} [2022-12-13 20:17:20,698 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 92 predicate places. [2022-12-13 20:17:20,698 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 140 transitions, 952 flow [2022-12-13 20:17:20,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 328.6666666666667) internal successors, (986), 3 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:17:20,698 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:17:20,698 INFO L209 CegarLoopForPetriNet]: trace histogram [90, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 20:17:20,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 20:17:20,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 20:17:20,899 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 20:17:20,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:17:20,900 INFO L85 PathProgramCache]: Analyzing trace with hash 167362769, now seen corresponding path program 1 times [2022-12-13 20:17:20,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:17:20,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098630938] [2022-12-13 20:17:20,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:17:20,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:17:21,713 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:17:21,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2066716563] [2022-12-13 20:17:21,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:17:21,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:17:21,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:17:21,714 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:17:21,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 20:17:26,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:17:26,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 21276 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 20:17:26,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:17:26,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4284 backedges. 0 proven. 2889 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2022-12-13 20:17:26,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:17:26,785 INFO L134 CoverageAnalysis]: Checked inductivity of 4284 backedges. 0 proven. 2889 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2022-12-13 20:17:26,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:17:26,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098630938] [2022-12-13 20:17:26,785 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:17:26,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066716563] [2022-12-13 20:17:26,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066716563] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:17:26,786 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:17:26,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-12-13 20:17:26,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864231021] [2022-12-13 20:17:26,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:17:26,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 20:17:26,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:17:26,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 20:17:26,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2022-12-13 20:17:26,858 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 719 [2022-12-13 20:17:26,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 140 transitions, 952 flow. Second operand has 10 states, 10 states have (on average 327.5) internal successors, (3275), 10 states have internal predecessors, (3275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:17:26,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:17:26,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 719 [2022-12-13 20:17:26,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:17:31,780 INFO L130 PetriNetUnfolder]: 11497/18278 cut-off events. [2022-12-13 20:17:31,781 INFO L131 PetriNetUnfolder]: For 7130/7130 co-relation queries the response was YES. [2022-12-13 20:17:31,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37563 conditions, 18278 events. 11497/18278 cut-off events. For 7130/7130 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 118347 event pairs, 9852 based on Foata normal form. 5/11362 useless extension candidates. Maximal degree in co-relation 37501. Up to 16731 conditions per place. [2022-12-13 20:17:31,911 INFO L137 encePairwiseOnDemand]: 714/719 looper letters, 329 selfloop transitions, 35 changer transitions 0/377 dead transitions. [2022-12-13 20:17:31,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 377 transitions, 4050 flow [2022-12-13 20:17:31,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 20:17:31,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 20:17:31,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3359 transitions. [2022-12-13 20:17:31,916 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46717663421418637 [2022-12-13 20:17:31,916 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3359 transitions. [2022-12-13 20:17:31,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3359 transitions. [2022-12-13 20:17:31,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:17:31,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3359 transitions. [2022-12-13 20:17:31,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 335.9) internal successors, (3359), 10 states have internal predecessors, (3359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:17:31,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 719.0) internal successors, (7909), 11 states have internal predecessors, (7909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:17:31,927 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 719.0) internal successors, (7909), 11 states have internal predecessors, (7909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:17:31,928 INFO L175 Difference]: Start difference. First operand has 184 places, 140 transitions, 952 flow. Second operand 10 states and 3359 transitions. [2022-12-13 20:17:31,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 377 transitions, 4050 flow [2022-12-13 20:17:31,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 377 transitions, 4049 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:17:31,953 INFO L231 Difference]: Finished difference. Result has 198 places, 165 transitions, 1701 flow [2022-12-13 20:17:31,953 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=719, PETRI_DIFFERENCE_MINUEND_FLOW=951, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1701, PETRI_PLACES=198, PETRI_TRANSITIONS=165} [2022-12-13 20:17:31,953 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 106 predicate places. [2022-12-13 20:17:31,953 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 165 transitions, 1701 flow [2022-12-13 20:17:31,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 327.5) internal successors, (3275), 10 states have internal predecessors, (3275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:17:31,954 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:17:31,954 INFO L209 CegarLoopForPetriNet]: trace histogram [93, 4, 3, 1, 1] [2022-12-13 20:17:32,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 20:17:32,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 20:17:32,155 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-12-13 20:17:32,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:17:32,157 INFO L85 PathProgramCache]: Analyzing trace with hash 949804484, now seen corresponding path program 5 times [2022-12-13 20:17:32,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:17:32,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199829677] [2022-12-13 20:17:32,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:17:32,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:17:32,957 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:17:32,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1530232877] [2022-12-13 20:17:32,957 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 20:17:32,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:17:32,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:17:32,958 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:17:32,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14cfe271-b57b-4e34-a74d-840b921e7710/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process