./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/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_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/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_7553d851-5b4d-46fb-b7d8-0c751d82d523/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 ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 19:49:14,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:49:14,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:49:14,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:49:14,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:49:14,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:49:14,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:49:14,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:49:14,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:49:14,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:49:14,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:49:14,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:49:14,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:49:14,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:49:14,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:49:14,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:49:14,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:49:14,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:49:14,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:49:14,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:49:14,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:49:14,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:49:14,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:49:14,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:49:14,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:49:14,082 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:49:14,082 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:49:14,083 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:49:14,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:49:14,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:49:14,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:49:14,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:49:14,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:49:14,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:49:14,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:49:14,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:49:14,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:49:14,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:49:14,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:49:14,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:49:14,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:49:14,091 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 19:49:14,111 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:49:14,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:49:14,111 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:49:14,111 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:49:14,112 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:49:14,112 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:49:14,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:49:14,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:49:14,113 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:49:14,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:49:14,113 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:49:14,114 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:49:14,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:49:14,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:49:14,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:49:14,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:49:14,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:49:14,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:49:14,115 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 19:49:14,115 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:49:14,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:49:14,115 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:49:14,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:49:14,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:49:14,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:49:14,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:49:14,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:49:14,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:49:14,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:49:14,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:49:14,117 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:49:14,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:49:14,117 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:49:14,117 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:49:14,117 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:49:14,117 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:49:14,118 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:49:14,118 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_7553d851-5b4d-46fb-b7d8-0c751d82d523/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 [2022-12-13 19:49:14,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:49:14,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:49:14,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:49:14,334 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:49:14,334 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:49:14,335 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2022-12-13 19:49:16,970 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:49:17,140 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:49:17,141 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2022-12-13 19:49:17,151 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/data/8206eebb7/fdac35f3729a4ae9b001d63d2b127089/FLAGd6550b19e [2022-12-13 19:49:17,161 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/data/8206eebb7/fdac35f3729a4ae9b001d63d2b127089 [2022-12-13 19:49:17,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:49:17,164 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:49:17,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:49:17,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:49:17,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:49:17,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:49:17" (1/1) ... [2022-12-13 19:49:17,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@418ff042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:49:17, skipping insertion in model container [2022-12-13 19:49:17,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:49:17" (1/1) ... [2022-12-13 19:49:17,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:49:17,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:49:17,495 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_7553d851-5b4d-46fb-b7d8-0c751d82d523/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i[47038,47051] [2022-12-13 19:49:17,503 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 19:49:17,503 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 19:49:17,503 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 19:49:17,504 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 19:49:17,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:49:17,530 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:49:17,555 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_7553d851-5b4d-46fb-b7d8-0c751d82d523/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i[47038,47051] [2022-12-13 19:49:17,558 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 19:49:17,558 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 19:49:17,559 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 19:49:17,559 WARN L1576 CHandler]: Possible shadowing of function new [2022-12-13 19:49:17,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:49:17,602 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:49:17,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:49:17 WrapperNode [2022-12-13 19:49:17,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:49:17,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:49:17,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:49:17,604 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:49:17,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:49:17" (1/1) ... [2022-12-13 19:49:17,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:49:17" (1/1) ... [2022-12-13 19:49:17,638 INFO L138 Inliner]: procedures = 277, calls = 45, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 198 [2022-12-13 19:49:17,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:49:17,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:49:17,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:49:17,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:49:17,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:49:17" (1/1) ... [2022-12-13 19:49:17,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:49:17" (1/1) ... [2022-12-13 19:49:17,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:49:17" (1/1) ... [2022-12-13 19:49:17,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:49:17" (1/1) ... [2022-12-13 19:49:17,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:49:17" (1/1) ... [2022-12-13 19:49:17,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:49:17" (1/1) ... [2022-12-13 19:49:17,661 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:49:17" (1/1) ... [2022-12-13 19:49:17,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:49:17" (1/1) ... [2022-12-13 19:49:17,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:49:17,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:49:17,666 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:49:17,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:49:17,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:49:17" (1/1) ... [2022-12-13 19:49:17,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:49:17,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:49:17,692 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:49:17,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:49:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:49:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 19:49:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:49:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 19:49:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 19:49:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 19:49:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 19:49:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:49:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 19:49:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 19:49:17,725 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 19:49:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:49:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:49:17,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:49:17,727 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 19:49:17,843 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:49:17,844 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:49:18,149 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:49:18,157 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:49:18,157 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-12-13 19:49:18,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:49:18 BoogieIcfgContainer [2022-12-13 19:49:18,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:49:18,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:49:18,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:49:18,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:49:18,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:49:17" (1/3) ... [2022-12-13 19:49:18,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@643daa92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:49:18, skipping insertion in model container [2022-12-13 19:49:18,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:49:17" (2/3) ... [2022-12-13 19:49:18,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@643daa92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:49:18, skipping insertion in model container [2022-12-13 19:49:18,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:49:18" (3/3) ... [2022-12-13 19:49:18,169 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_91-arrayloop2_racefree.i [2022-12-13 19:49:18,177 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 19:49:18,187 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:49:18,188 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-12-13 19:49:18,188 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 19:49:18,261 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 19:49:18,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 229 transitions, 466 flow [2022-12-13 19:49:18,368 INFO L130 PetriNetUnfolder]: 26/246 cut-off events. [2022-12-13 19:49:18,368 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-12-13 19:49:18,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 246 events. 26/246 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 695 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 126. Up to 4 conditions per place. [2022-12-13 19:49:18,373 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 229 transitions, 466 flow [2022-12-13 19:49:18,378 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 226 transitions, 460 flow [2022-12-13 19:49:18,381 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:49:18,389 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 226 transitions, 460 flow [2022-12-13 19:49:18,391 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 226 transitions, 460 flow [2022-12-13 19:49:18,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 226 transitions, 460 flow [2022-12-13 19:49:18,420 INFO L130 PetriNetUnfolder]: 25/243 cut-off events. [2022-12-13 19:49:18,420 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-12-13 19:49:18,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 243 events. 25/243 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 678 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 126. Up to 4 conditions per place. [2022-12-13 19:49:18,423 INFO L119 LiptonReduction]: Number of co-enabled transitions 5400 [2022-12-13 19:49:36,897 WARN L233 SmtUtils]: Spent 11.21s on a formula simplification. DAG size of input: 192 DAG size of output: 190 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 19:49:44,064 WARN L233 SmtUtils]: Spent 7.16s 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 19:49:58,093 WARN L233 SmtUtils]: Spent 14.03s on a formula simplification. DAG size of input: 192 DAG size of output: 190 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 19:50:05,226 WARN L233 SmtUtils]: Spent 7.13s 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 19:50:15,140 WARN L233 SmtUtils]: Spent 9.91s on a formula simplification. DAG size of input: 194 DAG size of output: 192 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 19:50:22,593 WARN L233 SmtUtils]: Spent 7.45s 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 19:50:43,998 WARN L233 SmtUtils]: Spent 21.40s on a formula simplification. DAG size of input: 192 DAG size of output: 191 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 19:50:51,678 WARN L233 SmtUtils]: Spent 7.68s 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 19:50:51,735 INFO L134 LiptonReduction]: Checked pairs total: 5897 [2022-12-13 19:50:51,735 INFO L136 LiptonReduction]: Total number of compositions: 229 [2022-12-13 19:50:51,745 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:50:51,748 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;@3852afb1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:50:51,748 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-12-13 19:50:51,750 INFO L130 PetriNetUnfolder]: 2/8 cut-off events. [2022-12-13 19:50:51,751 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:50:51,751 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:50:51,751 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 19:50:51,751 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 19:50:51,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:50:51,755 INFO L85 PathProgramCache]: Analyzing trace with hash 909897, now seen corresponding path program 1 times [2022-12-13 19:50:51,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:50:51,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518042800] [2022-12-13 19:50:51,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:51,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:50:51,837 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:50:51,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1954561565] [2022-12-13 19:50:51,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:51,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:50:51,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:50:51,839 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:50:51,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 19:50:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:51,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:50:51,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:50:51,936 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 19:50:51,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:50:51,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:50:51,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518042800] [2022-12-13 19:50:51,937 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:50:51,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954561565] [2022-12-13 19:50:51,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954561565] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:50:51,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:50:51,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:50:51,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826061612] [2022-12-13 19:50:51,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:50:51,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:50:51,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:50:51,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:50:51,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:50:51,987 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 458 [2022-12-13 19:50:51,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 52 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:50:51,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:50:51,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 458 [2022-12-13 19:50:51,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:50:52,331 INFO L130 PetriNetUnfolder]: 102/233 cut-off events. [2022-12-13 19:50:52,331 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 19:50:52,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 233 events. 102/233 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 860 event pairs, 80 based on Foata normal form. 12/135 useless extension candidates. Maximal degree in co-relation 404. Up to 209 conditions per place. [2022-12-13 19:50:52,333 INFO L137 encePairwiseOnDemand]: 439/458 looper letters, 38 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2022-12-13 19:50:52,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 45 transitions, 180 flow [2022-12-13 19:50:52,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:50:52,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:50:52,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 664 transitions. [2022-12-13 19:50:52,345 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48326055312954874 [2022-12-13 19:50:52,345 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 664 transitions. [2022-12-13 19:50:52,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 664 transitions. [2022-12-13 19:50:52,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:50:52,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 664 transitions. [2022-12-13 19:50:52,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:50:52,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:50:52,356 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:50:52,358 INFO L175 Difference]: Start difference. First operand has 41 places, 52 transitions, 112 flow. Second operand 3 states and 664 transitions. [2022-12-13 19:50:52,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 45 transitions, 180 flow [2022-12-13 19:50:52,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:50:52,361 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 120 flow [2022-12-13 19:50:52,362 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2022-12-13 19:50:52,365 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2022-12-13 19:50:52,365 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 120 flow [2022-12-13 19:50:52,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:50:52,365 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:50:52,366 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 19:50:52,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 19:50:52,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-13 19:50:52,568 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 19:50:52,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:50:52,570 INFO L85 PathProgramCache]: Analyzing trace with hash 910122, now seen corresponding path program 1 times [2022-12-13 19:50:52,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:50:52,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897363759] [2022-12-13 19:50:52,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:52,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:50:52,634 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:50:52,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1852272100] [2022-12-13 19:50:52,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:52,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:50:52,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:50:52,635 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:50:52,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 19:50:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:52,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:50:52,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:50:52,749 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 19:50:52,749 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:50:52,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:50:52,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897363759] [2022-12-13 19:50:52,749 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:50:52,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852272100] [2022-12-13 19:50:52,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852272100] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:50:52,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:50:52,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:50:52,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860562022] [2022-12-13 19:50:52,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:50:52,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:50:52,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:50:52,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:50:52,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:50:52,809 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 458 [2022-12-13 19:50:52,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:50:52,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:50:52,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 458 [2022-12-13 19:50:52,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:50:52,917 INFO L130 PetriNetUnfolder]: 101/231 cut-off events. [2022-12-13 19:50:52,917 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 19:50:52,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 231 events. 101/231 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 855 event pairs, 80 based on Foata normal form. 2/128 useless extension candidates. Maximal degree in co-relation 445. Up to 210 conditions per place. [2022-12-13 19:50:52,918 INFO L137 encePairwiseOnDemand]: 456/458 looper letters, 37 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2022-12-13 19:50:52,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 188 flow [2022-12-13 19:50:52,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:50:52,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:50:52,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 650 transitions. [2022-12-13 19:50:52,921 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47307132459970885 [2022-12-13 19:50:52,921 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 650 transitions. [2022-12-13 19:50:52,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 650 transitions. [2022-12-13 19:50:52,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:50:52,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 650 transitions. [2022-12-13 19:50:52,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:50:52,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:50:52,931 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:50:52,931 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 120 flow. Second operand 3 states and 650 transitions. [2022-12-13 19:50:52,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 188 flow [2022-12-13 19:50:52,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:50:52,932 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 113 flow [2022-12-13 19:50:52,932 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2022-12-13 19:50:52,933 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2022-12-13 19:50:52,933 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 113 flow [2022-12-13 19:50:52,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:50:52,933 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:50:52,933 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2022-12-13 19:50:52,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 19:50:53,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-12-13 19:50:53,134 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 19:50:53,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:50:53,135 INFO L85 PathProgramCache]: Analyzing trace with hash 874611840, now seen corresponding path program 1 times [2022-12-13 19:50:53,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:50:53,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952241895] [2022-12-13 19:50:53,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:53,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:50:53,154 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:50:53,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [825227855] [2022-12-13 19:50:53,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:53,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:50:53,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:50:53,155 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:50:53,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 19:50:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:53,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 19:50:53,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:50:53,238 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 19:50:53,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:50:53,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:50:53,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952241895] [2022-12-13 19:50:53,239 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:50:53,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825227855] [2022-12-13 19:50:53,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825227855] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:50:53,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:50:53,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:50:53,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313523862] [2022-12-13 19:50:53,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:50:53,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:50:53,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:50:53,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:50:53,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:50:53,252 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 458 [2022-12-13 19:50:53,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 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 19:50:53,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:50:53,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 458 [2022-12-13 19:50:53,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:50:53,396 INFO L130 PetriNetUnfolder]: 101/235 cut-off events. [2022-12-13 19:50:53,396 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 19:50:53,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 235 events. 101/235 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 874 event pairs, 80 based on Foata normal form. 1/130 useless extension candidates. Maximal degree in co-relation 461. Up to 212 conditions per place. [2022-12-13 19:50:53,397 INFO L137 encePairwiseOnDemand]: 453/458 looper letters, 38 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2022-12-13 19:50:53,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 205 flow [2022-12-13 19:50:53,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:50:53,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:50:53,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 654 transitions. [2022-12-13 19:50:53,399 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4759825327510917 [2022-12-13 19:50:53,399 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 654 transitions. [2022-12-13 19:50:53,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 654 transitions. [2022-12-13 19:50:53,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:50:53,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 654 transitions. [2022-12-13 19:50:53,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:50:53,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:50:53,403 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:50:53,403 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 113 flow. Second operand 3 states and 654 transitions. [2022-12-13 19:50:53,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 205 flow [2022-12-13 19:50:53,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 45 transitions, 205 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:50:53,404 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 134 flow [2022-12-13 19:50:53,404 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2022-12-13 19:50:53,405 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2022-12-13 19:50:53,405 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 134 flow [2022-12-13 19:50:53,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 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 19:50:53,405 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:50:53,405 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 19:50:53,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 19:50:53,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:50:53,606 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 19:50:53,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:50:53,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1344512327, now seen corresponding path program 1 times [2022-12-13 19:50:53,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:50:53,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733321253] [2022-12-13 19:50:53,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:53,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:50:53,627 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:50:53,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [490147131] [2022-12-13 19:50:53,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:53,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:50:53,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:50:53,628 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:50:53,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 19:50:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:53,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:50:53,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:50:53,760 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 19:50:53,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:50:53,773 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 19:50:53,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:50:53,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733321253] [2022-12-13 19:50:53,773 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:50:53,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490147131] [2022-12-13 19:50:53,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490147131] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:50:53,774 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:50:53,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-12-13 19:50:53,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593240089] [2022-12-13 19:50:53,774 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:50:53,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:50:53,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:50:53,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:50:53,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:50:53,860 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 458 [2022-12-13 19:50:53,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 134 flow. Second operand has 6 states, 6 states have (on average 204.5) internal successors, (1227), 6 states have internal predecessors, (1227), 0 states have call successors, (0), 0 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 19:50:53,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:50:53,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 458 [2022-12-13 19:50:53,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:50:54,154 INFO L130 PetriNetUnfolder]: 103/247 cut-off events. [2022-12-13 19:50:54,154 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 19:50:54,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 523 conditions, 247 events. 103/247 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 936 event pairs, 80 based on Foata normal form. 6/145 useless extension candidates. Maximal degree in co-relation 508. Up to 210 conditions per place. [2022-12-13 19:50:54,156 INFO L137 encePairwiseOnDemand]: 451/458 looper letters, 42 selfloop transitions, 8 changer transitions 0/54 dead transitions. [2022-12-13 19:50:54,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 278 flow [2022-12-13 19:50:54,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:50:54,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:50:54,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1275 transitions. [2022-12-13 19:50:54,160 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46397379912663755 [2022-12-13 19:50:54,160 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1275 transitions. [2022-12-13 19:50:54,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1275 transitions. [2022-12-13 19:50:54,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:50:54,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1275 transitions. [2022-12-13 19:50:54,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 212.5) internal successors, (1275), 6 states have internal predecessors, (1275), 0 states have call successors, (0), 0 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 19:50:54,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 458.0) internal successors, (3206), 7 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:50:54,170 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 458.0) internal successors, (3206), 7 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:50:54,170 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 134 flow. Second operand 6 states and 1275 transitions. [2022-12-13 19:50:54,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 278 flow [2022-12-13 19:50:54,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 54 transitions, 275 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:50:54,172 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 210 flow [2022-12-13 19:50:54,172 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=210, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2022-12-13 19:50:54,173 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2022-12-13 19:50:54,173 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 210 flow [2022-12-13 19:50:54,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 204.5) internal successors, (1227), 6 states have internal predecessors, (1227), 0 states have call successors, (0), 0 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 19:50:54,174 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:50:54,174 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2022-12-13 19:50:54,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 19:50:54,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:50:54,375 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 19:50:54,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:50:54,376 INFO L85 PathProgramCache]: Analyzing trace with hash 841350720, now seen corresponding path program 2 times [2022-12-13 19:50:54,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:50:54,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069234835] [2022-12-13 19:50:54,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:54,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:50:54,457 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:50:54,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116246808] [2022-12-13 19:50:54,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:50:54,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:50:54,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:50:54,459 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:50:54,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 19:50:54,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 19:50:54,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:50:54,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:50:54,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:50:54,612 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 19:50:54,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:50:54,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:50:54,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069234835] [2022-12-13 19:50:54,613 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:50:54,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116246808] [2022-12-13 19:50:54,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116246808] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:50:54,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:50:54,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:50:54,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801557420] [2022-12-13 19:50:54,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:50:54,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:50:54,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:50:54,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:50:54,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:50:54,630 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 458 [2022-12-13 19:50:54,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 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 19:50:54,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:50:54,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 458 [2022-12-13 19:50:54,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:50:54,821 INFO L130 PetriNetUnfolder]: 103/245 cut-off events. [2022-12-13 19:50:54,821 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-12-13 19:50:54,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 560 conditions, 245 events. 103/245 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 917 event pairs, 80 based on Foata normal form. 1/139 useless extension candidates. Maximal degree in co-relation 540. Up to 224 conditions per place. [2022-12-13 19:50:54,822 INFO L137 encePairwiseOnDemand]: 454/458 looper letters, 41 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2022-12-13 19:50:54,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 48 transitions, 298 flow [2022-12-13 19:50:54,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:50:54,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:50:54,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 645 transitions. [2022-12-13 19:50:54,824 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46943231441048033 [2022-12-13 19:50:54,824 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 645 transitions. [2022-12-13 19:50:54,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 645 transitions. [2022-12-13 19:50:54,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:50:54,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 645 transitions. [2022-12-13 19:50:54,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 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 19:50:54,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:50:54,828 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:50:54,828 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 210 flow. Second operand 3 states and 645 transitions. [2022-12-13 19:50:54,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 48 transitions, 298 flow [2022-12-13 19:50:54,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 48 transitions, 287 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 19:50:54,830 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 212 flow [2022-12-13 19:50:54,830 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2022-12-13 19:50:54,831 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 15 predicate places. [2022-12-13 19:50:54,831 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 212 flow [2022-12-13 19:50:54,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 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 19:50:54,831 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:50:54,831 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2022-12-13 19:50:54,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 19:50:55,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:50:55,032 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 19:50:55,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:50:55,033 INFO L85 PathProgramCache]: Analyzing trace with hash 312071897, now seen corresponding path program 3 times [2022-12-13 19:50:55,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:50:55,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729417309] [2022-12-13 19:50:55,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:55,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:50:55,075 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:50:55,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73146331] [2022-12-13 19:50:55,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 19:50:55,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:50:55,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:50:55,076 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:50:55,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 19:50:55,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 19:50:55,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:50:55,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 19:50:55,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:50:55,323 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 19:50:55,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:50:55,510 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 19:50:55,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:50:55,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729417309] [2022-12-13 19:50:55,510 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:50:55,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73146331] [2022-12-13 19:50:55,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73146331] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:50:55,511 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:50:55,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-12-13 19:50:55,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315594275] [2022-12-13 19:50:55,511 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:50:55,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 19:50:55,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:50:55,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 19:50:55,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 19:50:56,207 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 458 [2022-12-13 19:50:56,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 212 flow. Second operand has 10 states, 10 states have (on average 197.4) internal successors, (1974), 10 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:50:56,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:50:56,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 458 [2022-12-13 19:50:56,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:50:58,801 INFO L130 PetriNetUnfolder]: 203/474 cut-off events. [2022-12-13 19:50:58,801 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2022-12-13 19:50:58,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 474 events. 203/474 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1970 event pairs, 160 based on Foata normal form. 2/270 useless extension candidates. Maximal degree in co-relation 1011. Up to 208 conditions per place. [2022-12-13 19:50:58,803 INFO L137 encePairwiseOnDemand]: 449/458 looper letters, 72 selfloop transitions, 15 changer transitions 0/91 dead transitions. [2022-12-13 19:50:58,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 91 transitions, 558 flow [2022-12-13 19:50:58,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 19:50:58,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 19:50:58,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2240 transitions. [2022-12-13 19:50:58,806 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44462088130210403 [2022-12-13 19:50:58,806 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2240 transitions. [2022-12-13 19:50:58,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2240 transitions. [2022-12-13 19:50:58,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:50:58,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2240 transitions. [2022-12-13 19:50:58,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 203.63636363636363) internal successors, (2240), 11 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:50:58,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 458.0) internal successors, (5496), 12 states have internal predecessors, (5496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:50:58,814 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 458.0) internal successors, (5496), 12 states have internal predecessors, (5496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:50:58,814 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 212 flow. Second operand 11 states and 2240 transitions. [2022-12-13 19:50:58,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 91 transitions, 558 flow [2022-12-13 19:50:58,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 91 transitions, 544 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:50:58,816 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 334 flow [2022-12-13 19:50:58,817 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=334, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2022-12-13 19:50:58,817 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 27 predicate places. [2022-12-13 19:50:58,817 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 334 flow [2022-12-13 19:50:58,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 197.4) internal successors, (1974), 10 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:50:58,818 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:50:58,818 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 2, 1, 1, 1] [2022-12-13 19:50:58,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 19:50:59,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:50:59,020 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 19:50:59,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:50:59,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1084297424, now seen corresponding path program 1 times [2022-12-13 19:50:59,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:50:59,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442689651] [2022-12-13 19:50:59,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:59,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:50:59,086 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:50:59,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [448370313] [2022-12-13 19:50:59,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:50:59,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:50:59,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:50:59,088 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:50:59,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 19:50:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:50:59,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 1536 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 19:50:59,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:50:59,444 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 19:50:59,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:50:59,482 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 19:50:59,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:50:59,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442689651] [2022-12-13 19:50:59,482 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:50:59,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448370313] [2022-12-13 19:50:59,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448370313] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:50:59,483 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:50:59,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-12-13 19:50:59,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417081326] [2022-12-13 19:50:59,483 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:50:59,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 19:50:59,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:50:59,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 19:50:59,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-12-13 19:50:59,537 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 458 [2022-12-13 19:50:59,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 334 flow. Second operand has 12 states, 12 states have (on average 204.33333333333334) internal successors, (2452), 12 states have internal predecessors, (2452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:50:59,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:50:59,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 458 [2022-12-13 19:50:59,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:51:00,479 INFO L130 PetriNetUnfolder]: 203/510 cut-off events. [2022-12-13 19:51:00,479 INFO L131 PetriNetUnfolder]: For 410/410 co-relation queries the response was YES. [2022-12-13 19:51:00,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1258 conditions, 510 events. 203/510 cut-off events. For 410/410 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1994 event pairs, 160 based on Foata normal form. 18/325 useless extension candidates. Maximal degree in co-relation 1231. Up to 412 conditions per place. [2022-12-13 19:51:00,481 INFO L137 encePairwiseOnDemand]: 452/458 looper letters, 59 selfloop transitions, 21 changer transitions 0/84 dead transitions. [2022-12-13 19:51:00,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 84 transitions, 751 flow [2022-12-13 19:51:00,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 19:51:00,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 19:51:00,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2510 transitions. [2022-12-13 19:51:00,485 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4566957787481805 [2022-12-13 19:51:00,485 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2510 transitions. [2022-12-13 19:51:00,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2510 transitions. [2022-12-13 19:51:00,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:51:00,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2510 transitions. [2022-12-13 19:51:00,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 209.16666666666666) internal successors, (2510), 12 states have internal predecessors, (2510), 0 states have call successors, (0), 0 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 19:51:00,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 458.0) internal successors, (5954), 13 states have internal predecessors, (5954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:51:00,493 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 458.0) internal successors, (5954), 13 states have internal predecessors, (5954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:51:00,493 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 334 flow. Second operand 12 states and 2510 transitions. [2022-12-13 19:51:00,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 84 transitions, 751 flow [2022-12-13 19:51:00,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 84 transitions, 721 flow, removed 13 selfloop flow, removed 3 redundant places. [2022-12-13 19:51:00,498 INFO L231 Difference]: Finished difference. Result has 83 places, 66 transitions, 494 flow [2022-12-13 19:51:00,498 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=494, PETRI_PLACES=83, PETRI_TRANSITIONS=66} [2022-12-13 19:51:00,499 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 42 predicate places. [2022-12-13 19:51:00,499 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 494 flow [2022-12-13 19:51:00,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 204.33333333333334) internal successors, (2452), 12 states have internal predecessors, (2452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:51:00,500 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:51:00,500 INFO L209 CegarLoopForPetriNet]: trace histogram [12, 2, 1, 1, 1] [2022-12-13 19:51:00,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 19:51:00,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:51:00,701 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 19:51:00,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:51:00,702 INFO L85 PathProgramCache]: Analyzing trace with hash -2062206096, now seen corresponding path program 2 times [2022-12-13 19:51:00,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:51:00,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018769684] [2022-12-13 19:51:00,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:51:00,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:51:00,842 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:51:00,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [338042683] [2022-12-13 19:51:00,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:51:00,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:51:00,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:51:00,843 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:51:00,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 19:51:01,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:51:01,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:51:01,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 2940 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 19:51:01,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:51:01,508 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 34 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 19:51:01,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:51:01,646 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 34 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 19:51:01,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:51:01,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018769684] [2022-12-13 19:51:01,646 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:51:01,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338042683] [2022-12-13 19:51:01,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338042683] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:51:01,646 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:51:01,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-12-13 19:51:01,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187185874] [2022-12-13 19:51:01,647 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:51:01,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 19:51:01,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:51:01,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 19:51:01,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-12-13 19:51:01,759 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 458 [2022-12-13 19:51:01,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 66 transitions, 494 flow. Second operand has 24 states, 24 states have (on average 204.16666666666666) internal successors, (4900), 24 states have internal predecessors, (4900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:51:01,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:51:01,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 458 [2022-12-13 19:51:01,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:51:03,992 INFO L130 PetriNetUnfolder]: 203/582 cut-off events. [2022-12-13 19:51:03,992 INFO L131 PetriNetUnfolder]: For 2393/2393 co-relation queries the response was YES. [2022-12-13 19:51:03,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1836 conditions, 582 events. 203/582 cut-off events. For 2393/2393 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2148 event pairs, 160 based on Foata normal form. 36/415 useless extension candidates. Maximal degree in co-relation 1803. Up to 412 conditions per place. [2022-12-13 19:51:03,997 INFO L137 encePairwiseOnDemand]: 452/458 looper letters, 95 selfloop transitions, 33 changer transitions 0/132 dead transitions. [2022-12-13 19:51:03,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 132 transitions, 1580 flow [2022-12-13 19:51:03,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 19:51:03,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-13 19:51:04,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4994 transitions. [2022-12-13 19:51:04,006 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45433042212518193 [2022-12-13 19:51:04,006 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4994 transitions. [2022-12-13 19:51:04,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4994 transitions. [2022-12-13 19:51:04,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:51:04,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4994 transitions. [2022-12-13 19:51:04,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 208.08333333333334) internal successors, (4994), 24 states have internal predecessors, (4994), 0 states have call successors, (0), 0 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 19:51:04,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 458.0) internal successors, (11450), 25 states have internal predecessors, (11450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:51:04,022 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 458.0) internal successors, (11450), 25 states have internal predecessors, (11450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:51:04,023 INFO L175 Difference]: Start difference. First operand has 83 places, 66 transitions, 494 flow. Second operand 24 states and 4994 transitions. [2022-12-13 19:51:04,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 132 transitions, 1580 flow [2022-12-13 19:51:04,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 132 transitions, 1466 flow, removed 19 selfloop flow, removed 4 redundant places. [2022-12-13 19:51:04,029 INFO L231 Difference]: Finished difference. Result has 115 places, 81 transitions, 772 flow [2022-12-13 19:51:04,029 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=772, PETRI_PLACES=115, PETRI_TRANSITIONS=81} [2022-12-13 19:51:04,030 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 74 predicate places. [2022-12-13 19:51:04,030 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 81 transitions, 772 flow [2022-12-13 19:51:04,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 204.16666666666666) internal successors, (4900), 24 states have internal predecessors, (4900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:51:04,031 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:51:04,031 INFO L209 CegarLoopForPetriNet]: trace histogram [24, 2, 1, 1, 1] [2022-12-13 19:51:04,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 19:51:04,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:51:04,233 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 19:51:04,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:51:04,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1066412208, now seen corresponding path program 3 times [2022-12-13 19:51:04,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:51:04,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327286589] [2022-12-13 19:51:04,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:51:04,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:51:04,444 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:51:04,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [785091491] [2022-12-13 19:51:04,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 19:51:04,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:51:04,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:51:04,445 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:51:04,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 19:51:05,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 19:51:05,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:51:05,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 19:51:05,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:51:05,166 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-12-13 19:51:05,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:51:05,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:51:05,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327286589] [2022-12-13 19:51:05,167 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:51:05,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785091491] [2022-12-13 19:51:05,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785091491] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:51:05,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:51:05,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:51:05,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089159192] [2022-12-13 19:51:05,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:51:05,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:51:05,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:51:05,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:51:05,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:51:05,229 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 458 [2022-12-13 19:51:05,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 81 transitions, 772 flow. Second operand has 7 states, 7 states have (on average 200.14285714285714) internal successors, (1401), 7 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:51:05,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:51:05,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 458 [2022-12-13 19:51:05,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:51:05,665 INFO L130 PetriNetUnfolder]: 201/538 cut-off events. [2022-12-13 19:51:05,665 INFO L131 PetriNetUnfolder]: For 1414/1414 co-relation queries the response was YES. [2022-12-13 19:51:05,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1570 conditions, 538 events. 201/538 cut-off events. For 1414/1414 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1915 event pairs, 160 based on Foata normal form. 43/379 useless extension candidates. Maximal degree in co-relation 1523. Up to 468 conditions per place. [2022-12-13 19:51:05,667 INFO L137 encePairwiseOnDemand]: 452/458 looper letters, 79 selfloop transitions, 9 changer transitions 0/92 dead transitions. [2022-12-13 19:51:05,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 92 transitions, 993 flow [2022-12-13 19:51:05,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:51:05,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:51:05,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1235 transitions. [2022-12-13 19:51:05,669 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4494177583697234 [2022-12-13 19:51:05,669 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1235 transitions. [2022-12-13 19:51:05,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1235 transitions. [2022-12-13 19:51:05,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:51:05,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1235 transitions. [2022-12-13 19:51:05,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 205.83333333333334) internal successors, (1235), 6 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:51:05,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 458.0) internal successors, (3206), 7 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:51:05,673 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 458.0) internal successors, (3206), 7 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:51:05,673 INFO L175 Difference]: Start difference. First operand has 115 places, 81 transitions, 772 flow. Second operand 6 states and 1235 transitions. [2022-12-13 19:51:05,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 92 transitions, 993 flow [2022-12-13 19:51:05,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 92 transitions, 885 flow, removed 28 selfloop flow, removed 11 redundant places. [2022-12-13 19:51:05,681 INFO L231 Difference]: Finished difference. Result has 107 places, 71 transitions, 561 flow [2022-12-13 19:51:05,681 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=561, PETRI_PLACES=107, PETRI_TRANSITIONS=71} [2022-12-13 19:51:05,682 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 66 predicate places. [2022-12-13 19:51:05,682 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 71 transitions, 561 flow [2022-12-13 19:51:05,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 200.14285714285714) internal successors, (1401), 7 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:51:05,683 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:51:05,683 INFO L209 CegarLoopForPetriNet]: trace histogram [44, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 19:51:05,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 19:51:05,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:51:05,884 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 19:51:05,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:51:05,885 INFO L85 PathProgramCache]: Analyzing trace with hash 51386607, now seen corresponding path program 1 times [2022-12-13 19:51:05,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:51:05,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140082709] [2022-12-13 19:51:05,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:51:05,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:51:06,200 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:51:06,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [486933169] [2022-12-13 19:51:06,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:51:06,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:51:06,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:51:06,201 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:51:06,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 19:51:08,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:08,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 10472 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 19:51:08,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:51:08,696 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 19:51:08,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:51:08,925 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 19:51:08,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:51:08,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140082709] [2022-12-13 19:51:08,926 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:51:08,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486933169] [2022-12-13 19:51:08,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486933169] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:51:08,926 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:51:08,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2022-12-13 19:51:08,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492670320] [2022-12-13 19:51:08,926 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:51:08,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 19:51:08,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:51:08,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 19:51:08,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-12-13 19:51:09,087 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 458 [2022-12-13 19:51:09,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 71 transitions, 561 flow. Second operand has 32 states, 32 states have (on average 204.28125) internal successors, (6537), 32 states have internal predecessors, (6537), 0 states have call successors, (0), 0 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 19:51:09,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:51:09,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 458 [2022-12-13 19:51:09,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:51:10,698 INFO L130 PetriNetUnfolder]: 201/570 cut-off events. [2022-12-13 19:51:10,698 INFO L131 PetriNetUnfolder]: For 6922/6922 co-relation queries the response was YES. [2022-12-13 19:51:10,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1652 conditions, 570 events. 201/570 cut-off events. For 6922/6922 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1945 event pairs, 160 based on Foata normal form. 24/392 useless extension candidates. Maximal degree in co-relation 1605. Up to 411 conditions per place. [2022-12-13 19:51:10,701 INFO L137 encePairwiseOnDemand]: 454/458 looper letters, 61 selfloop transitions, 39 changer transitions 0/104 dead transitions. [2022-12-13 19:51:10,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 104 transitions, 1160 flow [2022-12-13 19:51:10,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-13 19:51:10,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-13 19:51:10,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 6595 transitions. [2022-12-13 19:51:10,708 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4499863537117904 [2022-12-13 19:51:10,708 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 6595 transitions. [2022-12-13 19:51:10,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 6595 transitions. [2022-12-13 19:51:10,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:51:10,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 6595 transitions. [2022-12-13 19:51:10,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 206.09375) internal successors, (6595), 32 states have internal predecessors, (6595), 0 states have call successors, (0), 0 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 19:51:10,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 458.0) internal successors, (15114), 33 states have internal predecessors, (15114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:51:10,725 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 458.0) internal successors, (15114), 33 states have internal predecessors, (15114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:51:10,726 INFO L175 Difference]: Start difference. First operand has 107 places, 71 transitions, 561 flow. Second operand 32 states and 6595 transitions. [2022-12-13 19:51:10,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 104 transitions, 1160 flow [2022-12-13 19:51:10,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 104 transitions, 1142 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 19:51:10,735 INFO L231 Difference]: Finished difference. Result has 142 places, 80 transitions, 760 flow [2022-12-13 19:51:10,735 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=760, PETRI_PLACES=142, PETRI_TRANSITIONS=80} [2022-12-13 19:51:10,735 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 101 predicate places. [2022-12-13 19:51:10,736 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 80 transitions, 760 flow [2022-12-13 19:51:10,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 204.28125) internal successors, (6537), 32 states have internal predecessors, (6537), 0 states have call successors, (0), 0 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 19:51:10,736 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:51:10,736 INFO L209 CegarLoopForPetriNet]: trace histogram [60, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 19:51:10,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 19:51:10,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 19:51:10,937 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 19:51:10,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:51:10,938 INFO L85 PathProgramCache]: Analyzing trace with hash -561002257, now seen corresponding path program 2 times [2022-12-13 19:51:10,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:51:10,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890435341] [2022-12-13 19:51:10,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:51:10,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:51:11,411 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:51:11,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [168611019] [2022-12-13 19:51:11,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:51:11,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:51:11,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:51:11,412 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:51:11,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 19:51:12,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 19:51:12,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:51:12,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:51:12,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:51:12,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1894 trivial. 0 not checked. [2022-12-13 19:51:12,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:51:12,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:51:12,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890435341] [2022-12-13 19:51:12,966 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:51:12,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168611019] [2022-12-13 19:51:12,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168611019] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:51:12,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:51:12,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:51:12,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806802145] [2022-12-13 19:51:12,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:51:12,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:51:12,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:51:12,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:51:12,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:51:12,976 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 458 [2022-12-13 19:51:12,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 80 transitions, 760 flow. Second operand has 3 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 0 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 19:51:12,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:51:12,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 458 [2022-12-13 19:51:12,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:51:13,212 INFO L130 PetriNetUnfolder]: 163/494 cut-off events. [2022-12-13 19:51:13,212 INFO L131 PetriNetUnfolder]: For 1758/1758 co-relation queries the response was YES. [2022-12-13 19:51:13,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1664 conditions, 494 events. 163/494 cut-off events. For 1758/1758 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1580 event pairs, 128 based on Foata normal form. 0/342 useless extension candidates. Maximal degree in co-relation 1608. Up to 330 conditions per place. [2022-12-13 19:51:13,215 INFO L137 encePairwiseOnDemand]: 456/458 looper letters, 74 selfloop transitions, 1 changer transitions 0/79 dead transitions. [2022-12-13 19:51:13,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 79 transitions, 908 flow [2022-12-13 19:51:13,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:51:13,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:51:13,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 645 transitions. [2022-12-13 19:51:13,217 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46943231441048033 [2022-12-13 19:51:13,218 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 645 transitions. [2022-12-13 19:51:13,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 645 transitions. [2022-12-13 19:51:13,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:51:13,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 645 transitions. [2022-12-13 19:51:13,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 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 19:51:13,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:51:13,221 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:51:13,221 INFO L175 Difference]: Start difference. First operand has 142 places, 80 transitions, 760 flow. Second operand 3 states and 645 transitions. [2022-12-13 19:51:13,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 79 transitions, 908 flow [2022-12-13 19:51:13,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 79 transitions, 833 flow, removed 9 selfloop flow, removed 22 redundant places. [2022-12-13 19:51:13,233 INFO L231 Difference]: Finished difference. Result has 121 places, 79 transitions, 685 flow [2022-12-13 19:51:13,233 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=685, PETRI_PLACES=121, PETRI_TRANSITIONS=79} [2022-12-13 19:51:13,234 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 80 predicate places. [2022-12-13 19:51:13,234 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 79 transitions, 685 flow [2022-12-13 19:51:13,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 0 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 19:51:13,234 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:51:13,234 INFO L209 CegarLoopForPetriNet]: trace histogram [60, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 19:51:13,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-13 19:51:13,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 19:51:13,435 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 19:51:13,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:51:13,435 INFO L85 PathProgramCache]: Analyzing trace with hash -561002256, now seen corresponding path program 1 times [2022-12-13 19:51:13,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:51:13,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868379582] [2022-12-13 19:51:13,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:51:13,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:51:13,917 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:51:13,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [896377103] [2022-12-13 19:51:13,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:51:13,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:51:13,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:51:13,918 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:51:13,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 19:51:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:17,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 14216 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:51:17,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:51:17,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 964 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2022-12-13 19:51:17,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:51:17,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 964 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2022-12-13 19:51:17,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:51:17,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868379582] [2022-12-13 19:51:17,565 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:51:17,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896377103] [2022-12-13 19:51:17,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896377103] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:51:17,565 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:51:17,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-12-13 19:51:17,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374045809] [2022-12-13 19:51:17,566 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:51:17,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 19:51:17,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:51:17,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 19:51:17,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:51:17,628 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 458 [2022-12-13 19:51:17,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 79 transitions, 685 flow. Second operand has 8 states, 8 states have (on average 205.375) internal successors, (1643), 8 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:51:17,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:51:17,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 458 [2022-12-13 19:51:17,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:51:18,353 INFO L130 PetriNetUnfolder]: 174/498 cut-off events. [2022-12-13 19:51:18,353 INFO L131 PetriNetUnfolder]: For 4595/4595 co-relation queries the response was YES. [2022-12-13 19:51:18,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2424 conditions, 498 events. 174/498 cut-off events. For 4595/4595 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 793 event pairs, 64 based on Foata normal form. 4/426 useless extension candidates. Maximal degree in co-relation 2368. Up to 181 conditions per place. [2022-12-13 19:51:18,356 INFO L137 encePairwiseOnDemand]: 453/458 looper letters, 219 selfloop transitions, 28 changer transitions 0/251 dead transitions. [2022-12-13 19:51:18,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 251 transitions, 2846 flow [2022-12-13 19:51:18,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 19:51:18,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 19:51:18,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1679 transitions. [2022-12-13 19:51:18,360 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45824235807860264 [2022-12-13 19:51:18,360 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1679 transitions. [2022-12-13 19:51:18,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1679 transitions. [2022-12-13 19:51:18,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:51:18,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1679 transitions. [2022-12-13 19:51:18,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 209.875) internal successors, (1679), 8 states have internal predecessors, (1679), 0 states have call successors, (0), 0 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 19:51:18,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 458.0) internal successors, (4122), 9 states have internal predecessors, (4122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:51:18,366 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 458.0) internal successors, (4122), 9 states have internal predecessors, (4122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:51:18,366 INFO L175 Difference]: Start difference. First operand has 121 places, 79 transitions, 685 flow. Second operand 8 states and 1679 transitions. [2022-12-13 19:51:18,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 251 transitions, 2846 flow [2022-12-13 19:51:18,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 251 transitions, 2845 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:51:18,383 INFO L231 Difference]: Finished difference. Result has 132 places, 98 transitions, 1214 flow [2022-12-13 19:51:18,383 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1214, PETRI_PLACES=132, PETRI_TRANSITIONS=98} [2022-12-13 19:51:18,384 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 91 predicate places. [2022-12-13 19:51:18,384 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 98 transitions, 1214 flow [2022-12-13 19:51:18,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 205.375) internal successors, (1643), 8 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:51:18,384 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:51:18,384 INFO L209 CegarLoopForPetriNet]: trace histogram [62, 3, 2, 1, 1] [2022-12-13 19:51:18,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 19:51:18,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 19:51:18,586 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 19:51:18,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:51:18,587 INFO L85 PathProgramCache]: Analyzing trace with hash -559453753, now seen corresponding path program 4 times [2022-12-13 19:51:18,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:51:18,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528417479] [2022-12-13 19:51:18,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:51:18,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:51:19,156 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:51:19,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1865121761] [2022-12-13 19:51:19,156 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 19:51:19,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:51:19,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:51:19,157 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:51:19,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 19:52:55,092 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 19:52:55,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:52:55,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 14680 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 19:52:55,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:52:55,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2083 backedges. 1150 proven. 0 refuted. 0 times theorem prover too weak. 933 trivial. 0 not checked. [2022-12-13 19:52:55,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:52:55,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:52:55,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528417479] [2022-12-13 19:52:55,327 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:52:55,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865121761] [2022-12-13 19:52:55,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865121761] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:52:55,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:52:55,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:52:55,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501160497] [2022-12-13 19:52:55,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:52:55,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:52:55,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:52:55,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:52:55,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:52:55,401 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 458 [2022-12-13 19:52:55,402 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 98 transitions, 1214 flow. Second operand has 6 states, 6 states have (on average 202.66666666666666) internal successors, (1216), 6 states have internal predecessors, (1216), 0 states have call successors, (0), 0 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 19:52:55,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:52:55,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 458 [2022-12-13 19:52:55,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:52:56,146 INFO L130 PetriNetUnfolder]: 86/382 cut-off events. [2022-12-13 19:52:56,146 INFO L131 PetriNetUnfolder]: For 5639/5639 co-relation queries the response was YES. [2022-12-13 19:52:56,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1613 conditions, 382 events. 86/382 cut-off events. For 5639/5639 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 671 event pairs, 64 based on Foata normal form. 116/422 useless extension candidates. Maximal degree in co-relation 1551. Up to 181 conditions per place. [2022-12-13 19:52:56,147 INFO L137 encePairwiseOnDemand]: 454/458 looper letters, 122 selfloop transitions, 10 changer transitions 0/136 dead transitions. [2022-12-13 19:52:56,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 136 transitions, 1582 flow [2022-12-13 19:52:56,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:52:56,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:52:56,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1244 transitions. [2022-12-13 19:52:56,149 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45269286754002913 [2022-12-13 19:52:56,149 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1244 transitions. [2022-12-13 19:52:56,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1244 transitions. [2022-12-13 19:52:56,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:52:56,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1244 transitions. [2022-12-13 19:52:56,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 207.33333333333334) internal successors, (1244), 6 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:52:56,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 458.0) internal successors, (3206), 7 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:52:56,152 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 458.0) internal successors, (3206), 7 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:52:56,153 INFO L175 Difference]: Start difference. First operand has 132 places, 98 transitions, 1214 flow. Second operand 6 states and 1244 transitions. [2022-12-13 19:52:56,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 136 transitions, 1582 flow [2022-12-13 19:52:56,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 136 transitions, 1176 flow, removed 166 selfloop flow, removed 13 redundant places. [2022-12-13 19:52:56,163 INFO L231 Difference]: Finished difference. Result has 123 places, 78 transitions, 698 flow [2022-12-13 19:52:56,164 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=698, PETRI_PLACES=123, PETRI_TRANSITIONS=78} [2022-12-13 19:52:56,164 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 82 predicate places. [2022-12-13 19:52:56,164 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 78 transitions, 698 flow [2022-12-13 19:52:56,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 202.66666666666666) internal successors, (1216), 6 states have internal predecessors, (1216), 0 states have call successors, (0), 0 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 19:52:56,164 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:52:56,164 INFO L209 CegarLoopForPetriNet]: trace histogram [180, 6, 6, 1, 1, 1, 1, 1] [2022-12-13 19:52:56,365 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forcibly destroying the process [2022-12-13 19:52:56,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 137 [2022-12-13 19:52:56,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 19:52:56,427 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 19:52:56,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:52:56,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1703680756, now seen corresponding path program 2 times [2022-12-13 19:52:56,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:52:56,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150986194] [2022-12-13 19:52:56,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:52:56,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:52:57,500 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:52:57,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [224769667] [2022-12-13 19:52:57,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:52:57,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:52:57,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:52:57,501 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:52:57,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 19:53:01,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 19:53:01,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:53:01,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:53:01,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:53:01,649 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17226 trivial. 0 not checked. [2022-12-13 19:53:01,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:53:01,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:53:01,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150986194] [2022-12-13 19:53:01,650 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:53:01,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224769667] [2022-12-13 19:53:01,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224769667] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:53:01,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:53:01,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:53:01,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062807348] [2022-12-13 19:53:01,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:53:01,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:53:01,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:53:01,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:53:01,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:53:01,660 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 458 [2022-12-13 19:53:01,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 78 transitions, 698 flow. Second operand has 3 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 0 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 19:53:01,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:53:01,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 458 [2022-12-13 19:53:01,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:53:02,062 INFO L130 PetriNetUnfolder]: 67/344 cut-off events. [2022-12-13 19:53:02,062 INFO L131 PetriNetUnfolder]: For 3160/3160 co-relation queries the response was YES. [2022-12-13 19:53:02,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1161 conditions, 344 events. 67/344 cut-off events. For 3160/3160 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 540 event pairs, 22 based on Foata normal form. 0/294 useless extension candidates. Maximal degree in co-relation 1109. Up to 309 conditions per place. [2022-12-13 19:53:02,063 INFO L137 encePairwiseOnDemand]: 454/458 looper letters, 90 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2022-12-13 19:53:02,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 96 transitions, 918 flow [2022-12-13 19:53:02,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:53:02,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:53:02,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2022-12-13 19:53:02,065 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48253275109170307 [2022-12-13 19:53:02,065 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2022-12-13 19:53:02,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2022-12-13 19:53:02,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:53:02,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2022-12-13 19:53:02,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 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 19:53:02,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:53:02,067 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:53:02,067 INFO L175 Difference]: Start difference. First operand has 123 places, 78 transitions, 698 flow. Second operand 3 states and 663 transitions. [2022-12-13 19:53:02,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 96 transitions, 918 flow [2022-12-13 19:53:02,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 96 transitions, 913 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 19:53:02,073 INFO L231 Difference]: Finished difference. Result has 122 places, 77 transitions, 699 flow [2022-12-13 19:53:02,074 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=699, PETRI_PLACES=122, PETRI_TRANSITIONS=77} [2022-12-13 19:53:02,074 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 81 predicate places. [2022-12-13 19:53:02,074 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 77 transitions, 699 flow [2022-12-13 19:53:02,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 0 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 19:53:02,074 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:53:02,074 INFO L209 CegarLoopForPetriNet]: trace histogram [180, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:53:02,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 19:53:02,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:53:02,276 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 19:53:02,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:53:02,277 INFO L85 PathProgramCache]: Analyzing trace with hash -854611417, now seen corresponding path program 1 times [2022-12-13 19:53:02,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:53:02,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119954064] [2022-12-13 19:53:02,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:53:02,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:53:03,563 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:53:03,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1330357635] [2022-12-13 19:53:03,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:53:03,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:53:03,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:53:03,564 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:53:03,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 19:53:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:53:14,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 42491 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 19:53:14,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:53:14,444 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 14436 refuted. 0 times theorem prover too weak. 2790 trivial. 0 not checked. [2022-12-13 19:53:14,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:53:14,691 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 14436 refuted. 0 times theorem prover too weak. 2790 trivial. 0 not checked. [2022-12-13 19:53:14,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:53:14,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119954064] [2022-12-13 19:53:14,692 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:53:14,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330357635] [2022-12-13 19:53:14,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330357635] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:53:14,692 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:53:14,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-12-13 19:53:14,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383438210] [2022-12-13 19:53:14,692 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:53:14,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 19:53:14,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:53:14,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 19:53:14,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-12-13 19:53:14,823 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 458 [2022-12-13 19:53:14,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 77 transitions, 699 flow. Second operand has 12 states, 12 states have (on average 206.0) internal successors, (2472), 12 states have internal predecessors, (2472), 0 states have call successors, (0), 0 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 19:53:14,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:53:14,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 458 [2022-12-13 19:53:14,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:53:15,973 INFO L130 PetriNetUnfolder]: 71/474 cut-off events. [2022-12-13 19:53:15,974 INFO L131 PetriNetUnfolder]: For 5340/5340 co-relation queries the response was YES. [2022-12-13 19:53:15,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1757 conditions, 474 events. 71/474 cut-off events. For 5340/5340 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 485 event pairs, 48 based on Foata normal form. 4/445 useless extension candidates. Maximal degree in co-relation 1705. Up to 131 conditions per place. [2022-12-13 19:53:15,975 INFO L137 encePairwiseOnDemand]: 454/458 looper letters, 346 selfloop transitions, 12 changer transitions 0/362 dead transitions. [2022-12-13 19:53:15,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 362 transitions, 2898 flow [2022-12-13 19:53:15,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 19:53:15,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 19:53:15,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2498 transitions. [2022-12-13 19:53:15,979 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4545123726346434 [2022-12-13 19:53:15,979 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2498 transitions. [2022-12-13 19:53:15,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2498 transitions. [2022-12-13 19:53:15,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:53:15,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2498 transitions. [2022-12-13 19:53:15,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 208.16666666666666) internal successors, (2498), 12 states have internal predecessors, (2498), 0 states have call successors, (0), 0 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 19:53:15,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 458.0) internal successors, (5954), 13 states have internal predecessors, (5954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:53:15,985 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 458.0) internal successors, (5954), 13 states have internal predecessors, (5954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:53:15,985 INFO L175 Difference]: Start difference. First operand has 122 places, 77 transitions, 699 flow. Second operand 12 states and 2498 transitions. [2022-12-13 19:53:15,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 362 transitions, 2898 flow [2022-12-13 19:53:15,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 362 transitions, 2894 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:53:15,995 INFO L231 Difference]: Finished difference. Result has 136 places, 82 transitions, 1026 flow [2022-12-13 19:53:15,995 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1026, PETRI_PLACES=136, PETRI_TRANSITIONS=82} [2022-12-13 19:53:15,995 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 95 predicate places. [2022-12-13 19:53:15,995 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 82 transitions, 1026 flow [2022-12-13 19:53:15,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 206.0) internal successors, (2472), 12 states have internal predecessors, (2472), 0 states have call successors, (0), 0 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 19:53:15,996 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:53:15,996 INFO L209 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 2, 1, 1, 1, 1, 1] [2022-12-13 19:53:16,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 19:53:16,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 19:53:16,197 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-12-13 19:53:16,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:53:16,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1810841385, now seen corresponding path program 1 times [2022-12-13 19:53:16,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:53:16,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139398489] [2022-12-13 19:53:16,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:53:16,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:53:18,194 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:53:18,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [894864512] [2022-12-13 19:53:18,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:53:18,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:53:18,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:53:18,196 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:53:18,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7553d851-5b4d-46fb-b7d8-0c751d82d523/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process