./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:42:30,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:42:30,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:42:30,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:42:30,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:42:30,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:42:30,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:42:30,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:42:30,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:42:30,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:42:30,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:42:30,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:42:30,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:42:30,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:42:30,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:42:30,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:42:30,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:42:30,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:42:30,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:42:30,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:42:30,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:42:30,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:42:30,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:42:30,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:42:30,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:42:30,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:42:30,293 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:42:30,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:42:30,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:42:30,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:42:30,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:42:30,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:42:30,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:42:30,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:42:30,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:42:30,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:42:30,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:42:30,318 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:42:30,318 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:42:30,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:42:30,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:42:30,325 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 17:42:30,383 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:42:30,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:42:30,384 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:42:30,384 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:42:30,385 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:42:30,385 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:42:30,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:42:30,386 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:42:30,387 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:42:30,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:42:30,387 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:42:30,388 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:42:30,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:42:30,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:42:30,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:42:30,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:42:30,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:42:30,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:42:30,389 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:42:30,390 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:42:30,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:42:30,390 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:42:30,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:42:30,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:42:30,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:42:30,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:42:30,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:42:30,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:42:30,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:42:30,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:42:30,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:42:30,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:42:30,397 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:42:30,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:42:30,397 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:42:30,398 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:42:30,399 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_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e [2022-11-25 17:42:30,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:42:30,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:42:30,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:42:30,766 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:42:30,766 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:42:30,768 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2022-11-25 17:42:34,798 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:42:35,228 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:42:35,235 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2022-11-25 17:42:35,260 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/data/389673500/aad3e073e5f04559beed6a4e521ccc7a/FLAG5e24165dd [2022-11-25 17:42:35,287 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/data/389673500/aad3e073e5f04559beed6a4e521ccc7a [2022-11-25 17:42:35,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:42:35,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:42:35,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:42:35,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:42:35,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:42:35,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:42:35" (1/1) ... [2022-11-25 17:42:35,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e387b2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:35, skipping insertion in model container [2022-11-25 17:42:35,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:42:35" (1/1) ... [2022-11-25 17:42:35,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:42:35,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:42:36,038 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 17:42:36,039 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 17:42:36,039 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 17:42:36,040 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 17:42:36,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:42:36,093 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:42:36,144 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 17:42:36,145 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 17:42:36,146 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 17:42:36,146 WARN L1576 CHandler]: Possible shadowing of function new [2022-11-25 17:42:36,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:42:36,233 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:42:36,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:36 WrapperNode [2022-11-25 17:42:36,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:42:36,236 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:42:36,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:42:36,237 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:42:36,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:36" (1/1) ... [2022-11-25 17:42:36,285 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:36" (1/1) ... [2022-11-25 17:42:36,350 INFO L138 Inliner]: procedures = 271, calls = 32, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 127 [2022-11-25 17:42:36,351 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:42:36,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:42:36,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:42:36,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:42:36,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:36" (1/1) ... [2022-11-25 17:42:36,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:36" (1/1) ... [2022-11-25 17:42:36,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:36" (1/1) ... [2022-11-25 17:42:36,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:36" (1/1) ... [2022-11-25 17:42:36,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:36" (1/1) ... [2022-11-25 17:42:36,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:36" (1/1) ... [2022-11-25 17:42:36,421 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:36" (1/1) ... [2022-11-25 17:42:36,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:36" (1/1) ... [2022-11-25 17:42:36,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:42:36,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:42:36,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:42:36,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:42:36,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:36" (1/1) ... [2022-11-25 17:42:36,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:42:36,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:42:36,501 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:42:36,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:42:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-25 17:42:36,598 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-25 17:42:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:42:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 17:42:36,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:42:36,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:42:36,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:42:36,599 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 17:42:36,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 17:42:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:42:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 17:42:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:42:36,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:42:36,602 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:42:36,818 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:42:36,821 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:42:37,368 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:42:37,379 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:42:37,379 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-25 17:42:37,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:42:37 BoogieIcfgContainer [2022-11-25 17:42:37,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:42:37,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:42:37,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:42:37,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:42:37,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:42:35" (1/3) ... [2022-11-25 17:42:37,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@140902ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:42:37, skipping insertion in model container [2022-11-25 17:42:37,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:36" (2/3) ... [2022-11-25 17:42:37,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@140902ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:42:37, skipping insertion in model container [2022-11-25 17:42:37,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:42:37" (3/3) ... [2022-11-25 17:42:37,407 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_21-arrayloop2_nr.i [2022-11-25 17:42:37,419 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:42:37,432 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:42:37,459 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-25 17:42:37,459 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:42:37,687 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 17:42:37,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 203 transitions, 416 flow [2022-11-25 17:42:37,848 INFO L130 PetriNetUnfolder]: 14/201 cut-off events. [2022-11-25 17:42:37,848 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:42:37,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 201 events. 14/201 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 503 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 142. Up to 2 conditions per place. [2022-11-25 17:42:37,861 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 203 transitions, 416 flow [2022-11-25 17:42:37,869 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 201 transitions, 408 flow [2022-11-25 17:42:37,875 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:42:37,894 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 194 places, 201 transitions, 408 flow [2022-11-25 17:42:37,898 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 194 places, 201 transitions, 408 flow [2022-11-25 17:42:37,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 201 transitions, 408 flow [2022-11-25 17:42:37,960 INFO L130 PetriNetUnfolder]: 14/201 cut-off events. [2022-11-25 17:42:37,961 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:42:37,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 201 events. 14/201 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 505 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 142. Up to 2 conditions per place. [2022-11-25 17:42:37,969 INFO L119 LiptonReduction]: Number of co-enabled transitions 7600 [2022-11-25 17:43:17,330 WARN L233 SmtUtils]: Spent 17.47s on a formula simplification. DAG size of input: 190 DAG size of output: 188 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:43:26,998 WARN L233 SmtUtils]: Spent 9.66s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:43:46,582 WARN L233 SmtUtils]: Spent 19.58s on a formula simplification. DAG size of input: 188 DAG size of output: 187 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:43:57,771 WARN L233 SmtUtils]: Spent 11.18s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:44:24,052 WARN L233 SmtUtils]: Spent 26.28s on a formula simplification. DAG size of input: 188 DAG size of output: 186 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:44:35,134 WARN L233 SmtUtils]: Spent 11.08s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:45:03,980 WARN L233 SmtUtils]: Spent 28.84s on a formula simplification. DAG size of input: 188 DAG size of output: 186 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 17:45:15,166 WARN L233 SmtUtils]: Spent 11.16s 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) [2022-11-25 17:45:15,227 INFO L134 LiptonReduction]: Checked pairs total: 7749 [2022-11-25 17:45:15,227 INFO L136 LiptonReduction]: Total number of compositions: 207 [2022-11-25 17:45:15,249 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:45:15,254 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;@472d1500, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:45:15,255 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-25 17:45:15,260 INFO L130 PetriNetUnfolder]: 2/6 cut-off events. [2022-11-25 17:45:15,260 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:45:15,260 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:15,261 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:45:15,262 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 17:45:15,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:15,268 INFO L85 PathProgramCache]: Analyzing trace with hash 674717, now seen corresponding path program 1 times [2022-11-25 17:45:15,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:15,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545736813] [2022-11-25 17:45:15,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:15,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:15,417 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:45:15,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1129717177] [2022-11-25 17:45:15,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:15,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:15,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:45:15,423 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:45:15,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:45:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:15,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:45:15,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:45:15,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:15,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:45:15,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:15,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545736813] [2022-11-25 17:45:15,639 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:45:15,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129717177] [2022-11-25 17:45:15,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129717177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:15,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:15,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:45:15,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211687447] [2022-11-25 17:45:15,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:15,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:45:15,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:15,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:45:15,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:45:15,757 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 410 [2022-11-25 17:45:15,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:15,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:15,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 410 [2022-11-25 17:45:15,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:16,477 INFO L130 PetriNetUnfolder]: 436/710 cut-off events. [2022-11-25 17:45:16,477 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-25 17:45:16,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448 conditions, 710 events. 436/710 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2762 event pairs, 340 based on Foata normal form. 0/425 useless extension candidates. Maximal degree in co-relation 1412. Up to 706 conditions per place. [2022-11-25 17:45:16,486 INFO L137 encePairwiseOnDemand]: 401/410 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2022-11-25 17:45:16,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 174 flow [2022-11-25 17:45:16,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:45:16,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:45:16,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 610 transitions. [2022-11-25 17:45:16,507 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4959349593495935 [2022-11-25 17:45:16,509 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 610 transitions. [2022-11-25 17:45:16,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 610 transitions. [2022-11-25 17:45:16,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:16,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 610 transitions. [2022-11-25 17:45:16,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:16,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:16,532 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:16,534 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 84 flow. Second operand 3 states and 610 transitions. [2022-11-25 17:45:16,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 174 flow [2022-11-25 17:45:16,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:45:16,541 INFO L231 Difference]: Finished difference. Result has 41 places, 40 transitions, 110 flow [2022-11-25 17:45:16,543 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=41, PETRI_TRANSITIONS=40} [2022-11-25 17:45:16,548 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2022-11-25 17:45:16,548 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 40 transitions, 110 flow [2022-11-25 17:45:16,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:16,549 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:16,549 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:45:16,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:45:16,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-25 17:45:16,757 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 17:45:16,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:16,757 INFO L85 PathProgramCache]: Analyzing trace with hash 674875, now seen corresponding path program 1 times [2022-11-25 17:45:16,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:16,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124267562] [2022-11-25 17:45:16,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:16,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:16,810 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:45:16,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1414588555] [2022-11-25 17:45:16,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:16,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:16,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:45:16,812 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:45:16,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:45:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:17,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:45:17,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:45:17,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:17,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:45:17,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:17,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124267562] [2022-11-25 17:45:17,079 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:45:17,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414588555] [2022-11-25 17:45:17,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414588555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:17,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:17,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:45:17,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766929707] [2022-11-25 17:45:17,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:17,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:45:17,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:17,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:45:17,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:45:17,154 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 410 [2022-11-25 17:45:17,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:17,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:17,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 410 [2022-11-25 17:45:17,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:17,466 INFO L130 PetriNetUnfolder]: 435/708 cut-off events. [2022-11-25 17:45:17,467 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:45:17,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1454 conditions, 708 events. 435/708 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2769 event pairs, 340 based on Foata normal form. 2/430 useless extension candidates. Maximal degree in co-relation 1438. Up to 707 conditions per place. [2022-11-25 17:45:17,476 INFO L137 encePairwiseOnDemand]: 408/410 looper letters, 38 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2022-11-25 17:45:17,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 39 transitions, 180 flow [2022-11-25 17:45:17,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:45:17,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:45:17,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 606 transitions. [2022-11-25 17:45:17,480 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4926829268292683 [2022-11-25 17:45:17,480 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 606 transitions. [2022-11-25 17:45:17,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 606 transitions. [2022-11-25 17:45:17,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:17,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 606 transitions. [2022-11-25 17:45:17,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:17,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:17,489 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:17,489 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 110 flow. Second operand 3 states and 606 transitions. [2022-11-25 17:45:17,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 39 transitions, 180 flow [2022-11-25 17:45:17,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:45:17,492 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 103 flow [2022-11-25 17:45:17,492 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2022-11-25 17:45:17,493 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2022-11-25 17:45:17,493 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 103 flow [2022-11-25 17:45:17,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:17,494 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:17,494 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2022-11-25 17:45:17,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:45:17,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:17,702 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 17:45:17,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:17,703 INFO L85 PathProgramCache]: Analyzing trace with hash 648536711, now seen corresponding path program 1 times [2022-11-25 17:45:17,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:17,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210368057] [2022-11-25 17:45:17,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:17,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:17,739 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:45:17,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [454974697] [2022-11-25 17:45:17,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:17,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:17,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:45:17,741 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:45:17,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:45:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:17,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 17:45:17,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:45:17,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:17,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:45:17,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:17,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210368057] [2022-11-25 17:45:17,906 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:45:17,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454974697] [2022-11-25 17:45:17,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454974697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:17,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:17,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:45:17,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355167648] [2022-11-25 17:45:17,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:17,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:45:17,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:17,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:45:17,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:45:17,933 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 410 [2022-11-25 17:45:17,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:17,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:17,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 410 [2022-11-25 17:45:17,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:18,361 INFO L130 PetriNetUnfolder]: 435/712 cut-off events. [2022-11-25 17:45:18,361 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:45:18,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1465 conditions, 712 events. 435/712 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2768 event pairs, 340 based on Foata normal form. 1/432 useless extension candidates. Maximal degree in co-relation 1454. Up to 709 conditions per place. [2022-11-25 17:45:18,367 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2022-11-25 17:45:18,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 42 transitions, 197 flow [2022-11-25 17:45:18,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:45:18,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:45:18,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 610 transitions. [2022-11-25 17:45:18,371 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4959349593495935 [2022-11-25 17:45:18,371 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 610 transitions. [2022-11-25 17:45:18,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 610 transitions. [2022-11-25 17:45:18,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:18,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 610 transitions. [2022-11-25 17:45:18,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:18,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:18,379 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:18,380 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 103 flow. Second operand 3 states and 610 transitions. [2022-11-25 17:45:18,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 42 transitions, 197 flow [2022-11-25 17:45:18,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 42 transitions, 197 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:45:18,382 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 124 flow [2022-11-25 17:45:18,383 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2022-11-25 17:45:18,384 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2022-11-25 17:45:18,384 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 124 flow [2022-11-25 17:45:18,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:18,385 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:18,385 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-11-25 17:45:18,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-25 17:45:18,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-25 17:45:18,592 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 17:45:18,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:18,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1369052894, now seen corresponding path program 1 times [2022-11-25 17:45:18,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:18,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104765945] [2022-11-25 17:45:18,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:18,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:18,687 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:45:18,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1241636939] [2022-11-25 17:45:18,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:18,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:18,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:45:18,699 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:45:18,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:45:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:18,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:45:18,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:45:18,974 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:18,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:45:18,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:18,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:18,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104765945] [2022-11-25 17:45:18,998 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:45:18,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241636939] [2022-11-25 17:45:18,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241636939] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:45:18,999 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:45:18,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-25 17:45:19,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963968265] [2022-11-25 17:45:19,000 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:45:19,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:45:19,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:19,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:45:19,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:45:19,117 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 410 [2022-11-25 17:45:19,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 124 flow. Second operand has 6 states, 6 states have (on average 189.5) internal successors, (1137), 6 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:19,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:19,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 410 [2022-11-25 17:45:19,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:19,713 INFO L130 PetriNetUnfolder]: 437/724 cut-off events. [2022-11-25 17:45:19,713 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 17:45:19,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1515 conditions, 724 events. 437/724 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2822 event pairs, 340 based on Foata normal form. 6/447 useless extension candidates. Maximal degree in co-relation 1501. Up to 707 conditions per place. [2022-11-25 17:45:19,719 INFO L137 encePairwiseOnDemand]: 403/410 looper letters, 43 selfloop transitions, 8 changer transitions 0/51 dead transitions. [2022-11-25 17:45:19,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 51 transitions, 270 flow [2022-11-25 17:45:19,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:45:19,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:45:19,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1186 transitions. [2022-11-25 17:45:19,725 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4821138211382114 [2022-11-25 17:45:19,725 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1186 transitions. [2022-11-25 17:45:19,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1186 transitions. [2022-11-25 17:45:19,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:19,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1186 transitions. [2022-11-25 17:45:19,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 197.66666666666666) internal successors, (1186), 6 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:19,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:19,739 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:19,739 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 124 flow. Second operand 6 states and 1186 transitions. [2022-11-25 17:45:19,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 51 transitions, 270 flow [2022-11-25 17:45:19,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 51 transitions, 267 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:45:19,742 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 200 flow [2022-11-25 17:45:19,743 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2022-11-25 17:45:19,744 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 12 predicate places. [2022-11-25 17:45:19,744 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 200 flow [2022-11-25 17:45:19,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 189.5) internal successors, (1137), 6 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:19,746 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:19,746 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2022-11-25 17:45:19,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:45:19,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:19,953 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 17:45:19,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:19,954 INFO L85 PathProgramCache]: Analyzing trace with hash 692203847, now seen corresponding path program 2 times [2022-11-25 17:45:19,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:19,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530180017] [2022-11-25 17:45:19,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:19,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:20,038 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:45:20,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1452574367] [2022-11-25 17:45:20,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:45:20,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:20,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:45:20,041 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:45:20,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:45:20,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 17:45:20,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:45:20,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:45:20,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:45:20,393 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 17:45:20,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:45:20,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:20,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530180017] [2022-11-25 17:45:20,394 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:45:20,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452574367] [2022-11-25 17:45:20,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452574367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:20,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:20,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:45:20,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869922070] [2022-11-25 17:45:20,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:20,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:45:20,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:20,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:45:20,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:45:20,426 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 410 [2022-11-25 17:45:20,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:20,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:20,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 410 [2022-11-25 17:45:20,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:21,066 INFO L130 PetriNetUnfolder]: 437/722 cut-off events. [2022-11-25 17:45:21,067 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-25 17:45:21,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1552 conditions, 722 events. 437/722 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2814 event pairs, 340 based on Foata normal form. 1/441 useless extension candidates. Maximal degree in co-relation 1533. Up to 721 conditions per place. [2022-11-25 17:45:21,073 INFO L137 encePairwiseOnDemand]: 406/410 looper letters, 42 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2022-11-25 17:45:21,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 290 flow [2022-11-25 17:45:21,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:45:21,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:45:21,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 601 transitions. [2022-11-25 17:45:21,076 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4886178861788618 [2022-11-25 17:45:21,077 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 601 transitions. [2022-11-25 17:45:21,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 601 transitions. [2022-11-25 17:45:21,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:21,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 601 transitions. [2022-11-25 17:45:21,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:21,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:21,085 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:21,085 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 200 flow. Second operand 3 states and 601 transitions. [2022-11-25 17:45:21,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 290 flow [2022-11-25 17:45:21,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 45 transitions, 279 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-25 17:45:21,089 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 202 flow [2022-11-25 17:45:21,089 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2022-11-25 17:45:21,090 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 14 predicate places. [2022-11-25 17:45:21,091 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 202 flow [2022-11-25 17:45:21,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:21,092 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:21,092 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2022-11-25 17:45:21,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:45:21,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:21,299 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 17:45:21,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:21,300 INFO L85 PathProgramCache]: Analyzing trace with hash -16511858, now seen corresponding path program 3 times [2022-11-25 17:45:21,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:21,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307170618] [2022-11-25 17:45:21,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:21,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:21,406 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:45:21,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [661649454] [2022-11-25 17:45:21,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:45:21,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:21,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:45:21,409 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:45:21,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 17:45:21,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 17:45:21,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:45:21,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:45:21,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:45:21,980 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 17:45:21,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:45:21,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:21,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307170618] [2022-11-25 17:45:21,981 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:45:21,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661649454] [2022-11-25 17:45:21,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661649454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:21,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:21,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:45:21,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263852222] [2022-11-25 17:45:21,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:21,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:45:21,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:21,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:45:21,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:45:22,203 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 410 [2022-11-25 17:45:22,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 185.16666666666666) internal successors, (1111), 6 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:22,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:22,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 410 [2022-11-25 17:45:22,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:22,927 INFO L130 PetriNetUnfolder]: 435/712 cut-off events. [2022-11-25 17:45:22,927 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2022-11-25 17:45:22,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1502 conditions, 712 events. 435/712 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2760 event pairs, 340 based on Foata normal form. 4/440 useless extension candidates. Maximal degree in co-relation 1481. Up to 699 conditions per place. [2022-11-25 17:45:22,934 INFO L137 encePairwiseOnDemand]: 402/410 looper letters, 39 selfloop transitions, 5 changer transitions 0/44 dead transitions. [2022-11-25 17:45:22,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 44 transitions, 265 flow [2022-11-25 17:45:22,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:45:22,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:45:22,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1145 transitions. [2022-11-25 17:45:22,939 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4654471544715447 [2022-11-25 17:45:22,939 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1145 transitions. [2022-11-25 17:45:22,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1145 transitions. [2022-11-25 17:45:22,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:22,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1145 transitions. [2022-11-25 17:45:22,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 190.83333333333334) internal successors, (1145), 6 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:22,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:22,950 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:22,951 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 202 flow. Second operand 6 states and 1145 transitions. [2022-11-25 17:45:22,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 44 transitions, 265 flow [2022-11-25 17:45:22,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 237 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-11-25 17:45:22,954 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 146 flow [2022-11-25 17:45:22,955 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2022-11-25 17:45:22,956 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 12 predicate places. [2022-11-25 17:45:22,956 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 146 flow [2022-11-25 17:45:22,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 185.16666666666666) internal successors, (1111), 6 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:22,957 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:22,957 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:22,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 17:45:23,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 17:45:23,165 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 17:45:23,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:23,166 INFO L85 PathProgramCache]: Analyzing trace with hash 599397561, now seen corresponding path program 1 times [2022-11-25 17:45:23,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:23,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461476120] [2022-11-25 17:45:23,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:23,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:23,252 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:45:23,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1720045909] [2022-11-25 17:45:23,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:23,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:23,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:45:23,254 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:45:23,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 17:45:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:23,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:45:23,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:45:24,009 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:24,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:45:24,100 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:24,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:24,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461476120] [2022-11-25 17:45:24,102 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:45:24,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720045909] [2022-11-25 17:45:24,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720045909] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:45:24,102 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:45:24,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-25 17:45:24,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302350450] [2022-11-25 17:45:24,104 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:45:24,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:45:24,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:24,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:45:24,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:45:24,500 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 410 [2022-11-25 17:45:24,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 146 flow. Second operand has 12 states, 12 states have (on average 189.58333333333334) internal successors, (2275), 12 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:24,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:24,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 410 [2022-11-25 17:45:24,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:25,417 INFO L130 PetriNetUnfolder]: 435/724 cut-off events. [2022-11-25 17:45:25,417 INFO L131 PetriNetUnfolder]: For 159/159 co-relation queries the response was YES. [2022-11-25 17:45:25,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1543 conditions, 724 events. 435/724 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2833 event pairs, 340 based on Foata normal form. 12/460 useless extension candidates. Maximal degree in co-relation 1523. Up to 705 conditions per place. [2022-11-25 17:45:25,423 INFO L137 encePairwiseOnDemand]: 407/410 looper letters, 33 selfloop transitions, 13 changer transitions 0/46 dead transitions. [2022-11-25 17:45:25,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 46 transitions, 274 flow [2022-11-25 17:45:25,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:45:25,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 17:45:25,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2305 transitions. [2022-11-25 17:45:25,431 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4684959349593496 [2022-11-25 17:45:25,432 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2305 transitions. [2022-11-25 17:45:25,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2305 transitions. [2022-11-25 17:45:25,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:25,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2305 transitions. [2022-11-25 17:45:25,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 192.08333333333334) internal successors, (2305), 12 states have internal predecessors, (2305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:25,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:25,451 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:25,452 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 146 flow. Second operand 12 states and 2305 transitions. [2022-11-25 17:45:25,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 46 transitions, 274 flow [2022-11-25 17:45:25,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 46 transitions, 266 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-25 17:45:25,455 INFO L231 Difference]: Finished difference. Result has 66 places, 46 transitions, 238 flow [2022-11-25 17:45:25,456 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=238, PETRI_PLACES=66, PETRI_TRANSITIONS=46} [2022-11-25 17:45:25,456 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 26 predicate places. [2022-11-25 17:45:25,457 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 46 transitions, 238 flow [2022-11-25 17:45:25,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 189.58333333333334) internal successors, (2275), 12 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:25,458 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:25,458 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:25,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 17:45:25,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:25,668 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 17:45:25,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:25,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1061656871, now seen corresponding path program 2 times [2022-11-25 17:45:25,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:25,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602665217] [2022-11-25 17:45:25,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:25,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:25,884 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:45:25,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [667858077] [2022-11-25 17:45:25,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:45:25,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:25,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:45:25,886 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:45:25,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 17:45:26,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 17:45:26,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:45:26,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 17:45:26,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:45:26,665 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-25 17:45:26,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:45:26,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:26,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602665217] [2022-11-25 17:45:26,666 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:45:26,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667858077] [2022-11-25 17:45:26,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667858077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:26,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:26,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:45:26,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161941476] [2022-11-25 17:45:26,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:26,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:45:26,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:26,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:45:26,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:45:26,694 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 410 [2022-11-25 17:45:26,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 46 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:26,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:26,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 410 [2022-11-25 17:45:26,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:27,053 INFO L130 PetriNetUnfolder]: 398/663 cut-off events. [2022-11-25 17:45:27,053 INFO L131 PetriNetUnfolder]: For 88/88 co-relation queries the response was YES. [2022-11-25 17:45:27,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1469 conditions, 663 events. 398/663 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2875 event pairs, 10 based on Foata normal form. 0/423 useless extension candidates. Maximal degree in co-relation 1444. Up to 597 conditions per place. [2022-11-25 17:45:27,058 INFO L137 encePairwiseOnDemand]: 408/410 looper letters, 59 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2022-11-25 17:45:27,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 60 transitions, 388 flow [2022-11-25 17:45:27,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:45:27,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:45:27,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 618 transitions. [2022-11-25 17:45:27,065 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5024390243902439 [2022-11-25 17:45:27,066 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 618 transitions. [2022-11-25 17:45:27,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 618 transitions. [2022-11-25 17:45:27,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:27,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 618 transitions. [2022-11-25 17:45:27,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:27,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:27,073 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:27,073 INFO L175 Difference]: Start difference. First operand has 66 places, 46 transitions, 238 flow. Second operand 3 states and 618 transitions. [2022-11-25 17:45:27,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 60 transitions, 388 flow [2022-11-25 17:45:27,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 60 transitions, 336 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-11-25 17:45:27,079 INFO L231 Difference]: Finished difference. Result has 62 places, 45 transitions, 186 flow [2022-11-25 17:45:27,079 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=62, PETRI_TRANSITIONS=45} [2022-11-25 17:45:27,083 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 22 predicate places. [2022-11-25 17:45:27,083 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 45 transitions, 186 flow [2022-11-25 17:45:27,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:27,084 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:27,084 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:27,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 17:45:27,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:27,292 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 17:45:27,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:27,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1061656854, now seen corresponding path program 1 times [2022-11-25 17:45:27,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:27,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364673429] [2022-11-25 17:45:27,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:27,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:27,456 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:45:27,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1653072577] [2022-11-25 17:45:27,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:27,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:27,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:45:27,459 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:45:27,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 17:45:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:28,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 2492 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 17:45:28,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:45:29,067 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:29,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:45:29,391 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:29,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:29,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364673429] [2022-11-25 17:45:29,392 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:45:29,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653072577] [2022-11-25 17:45:29,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653072577] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:45:29,393 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:45:29,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-25 17:45:29,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321107290] [2022-11-25 17:45:29,403 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:45:29,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-25 17:45:29,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:29,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-25 17:45:29,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-25 17:45:29,759 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 410 [2022-11-25 17:45:29,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 45 transitions, 186 flow. Second operand has 24 states, 24 states have (on average 189.29166666666666) internal successors, (4543), 24 states have internal predecessors, (4543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:29,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:29,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 410 [2022-11-25 17:45:29,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:32,690 INFO L130 PetriNetUnfolder]: 398/687 cut-off events. [2022-11-25 17:45:32,690 INFO L131 PetriNetUnfolder]: For 1220/1220 co-relation queries the response was YES. [2022-11-25 17:45:32,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1541 conditions, 687 events. 398/687 cut-off events. For 1220/1220 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2543 event pairs, 307 based on Foata normal form. 24/471 useless extension candidates. Maximal degree in co-relation 1517. Up to 644 conditions per place. [2022-11-25 17:45:32,695 INFO L137 encePairwiseOnDemand]: 407/410 looper letters, 32 selfloop transitions, 25 changer transitions 0/57 dead transitions. [2022-11-25 17:45:32,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 57 transitions, 372 flow [2022-11-25 17:45:32,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-25 17:45:32,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-25 17:45:32,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4578 transitions. [2022-11-25 17:45:32,711 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4652439024390244 [2022-11-25 17:45:32,712 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4578 transitions. [2022-11-25 17:45:32,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4578 transitions. [2022-11-25 17:45:32,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:32,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4578 transitions. [2022-11-25 17:45:32,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 190.75) internal successors, (4578), 24 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:32,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 410.0) internal successors, (10250), 25 states have internal predecessors, (10250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:32,759 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 410.0) internal successors, (10250), 25 states have internal predecessors, (10250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:32,768 INFO L175 Difference]: Start difference. First operand has 62 places, 45 transitions, 186 flow. Second operand 24 states and 4578 transitions. [2022-11-25 17:45:32,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 57 transitions, 372 flow [2022-11-25 17:45:32,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 57 transitions, 371 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:45:32,772 INFO L231 Difference]: Finished difference. Result has 96 places, 57 transitions, 381 flow [2022-11-25 17:45:32,773 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=381, PETRI_PLACES=96, PETRI_TRANSITIONS=57} [2022-11-25 17:45:32,773 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 56 predicate places. [2022-11-25 17:45:32,774 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 57 transitions, 381 flow [2022-11-25 17:45:32,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 189.29166666666666) internal successors, (4543), 24 states have internal predecessors, (4543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:32,777 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:32,778 INFO L209 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:32,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 17:45:32,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:32,991 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 17:45:32,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:32,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1533854506, now seen corresponding path program 2 times [2022-11-25 17:45:32,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:32,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017926825] [2022-11-25 17:45:32,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:32,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:33,291 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:45:33,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [103268402] [2022-11-25 17:45:33,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:45:33,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:33,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:45:33,294 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:45:33,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 17:45:34,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 17:45:34,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:45:34,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:45:34,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:45:34,657 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-11-25 17:45:34,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:45:34,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:34,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017926825] [2022-11-25 17:45:34,658 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:45:34,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103268402] [2022-11-25 17:45:34,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103268402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:34,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:34,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:45:34,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243392117] [2022-11-25 17:45:34,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:34,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:45:34,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:34,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:45:34,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:45:34,686 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 410 [2022-11-25 17:45:34,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 57 transitions, 381 flow. Second operand has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:34,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:34,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 410 [2022-11-25 17:45:34,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:35,235 INFO L130 PetriNetUnfolder]: 361/626 cut-off events. [2022-11-25 17:45:35,235 INFO L131 PetriNetUnfolder]: For 436/436 co-relation queries the response was YES. [2022-11-25 17:45:35,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1525 conditions, 626 events. 361/626 cut-off events. For 436/436 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2448 event pairs, 76 based on Foata normal form. 0/422 useless extension candidates. Maximal degree in co-relation 1488. Up to 390 conditions per place. [2022-11-25 17:45:35,243 INFO L137 encePairwiseOnDemand]: 407/410 looper letters, 69 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2022-11-25 17:45:35,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 71 transitions, 553 flow [2022-11-25 17:45:35,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:45:35,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:45:35,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 614 transitions. [2022-11-25 17:45:35,246 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4991869918699187 [2022-11-25 17:45:35,246 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 614 transitions. [2022-11-25 17:45:35,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 614 transitions. [2022-11-25 17:45:35,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:35,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 614 transitions. [2022-11-25 17:45:35,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:35,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:35,253 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:35,253 INFO L175 Difference]: Start difference. First operand has 96 places, 57 transitions, 381 flow. Second operand 3 states and 614 transitions. [2022-11-25 17:45:35,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 71 transitions, 553 flow [2022-11-25 17:45:35,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 71 transitions, 453 flow, removed 37 selfloop flow, removed 11 redundant places. [2022-11-25 17:45:35,264 INFO L231 Difference]: Finished difference. Result has 86 places, 56 transitions, 283 flow [2022-11-25 17:45:35,265 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=283, PETRI_PLACES=86, PETRI_TRANSITIONS=56} [2022-11-25 17:45:35,267 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 46 predicate places. [2022-11-25 17:45:35,267 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 56 transitions, 283 flow [2022-11-25 17:45:35,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:35,268 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:35,268 INFO L209 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:35,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 17:45:35,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 17:45:35,478 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 17:45:35,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:35,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1533854491, now seen corresponding path program 1 times [2022-11-25 17:45:35,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:35,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287200327] [2022-11-25 17:45:35,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:35,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:35,846 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:45:35,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442823935] [2022-11-25 17:45:35,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:35,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:35,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:45:35,861 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:45:35,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 17:45:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:38,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 5295 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-25 17:45:38,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:45:39,016 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:39,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:45:39,680 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:39,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:39,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287200327] [2022-11-25 17:45:39,680 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:45:39,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442823935] [2022-11-25 17:45:39,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442823935] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:45:39,681 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:45:39,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2022-11-25 17:45:39,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748429617] [2022-11-25 17:45:39,682 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:45:39,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-25 17:45:39,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:39,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-25 17:45:39,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-11-25 17:45:40,336 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 410 [2022-11-25 17:45:40,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 56 transitions, 283 flow. Second operand has 32 states, 32 states have (on average 189.25) internal successors, (6056), 32 states have internal predecessors, (6056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:40,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:40,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 410 [2022-11-25 17:45:40,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:43,523 INFO L130 PetriNetUnfolder]: 361/642 cut-off events. [2022-11-25 17:45:43,524 INFO L131 PetriNetUnfolder]: For 4249/4249 co-relation queries the response was YES. [2022-11-25 17:45:43,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1541 conditions, 642 events. 361/642 cut-off events. For 4249/4249 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2227 event pairs, 274 based on Foata normal form. 16/502 useless extension candidates. Maximal degree in co-relation 1505. Up to 583 conditions per place. [2022-11-25 17:45:43,530 INFO L137 encePairwiseOnDemand]: 407/410 looper letters, 31 selfloop transitions, 33 changer transitions 0/64 dead transitions. [2022-11-25 17:45:43,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 64 transitions, 459 flow [2022-11-25 17:45:43,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-25 17:45:43,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-25 17:45:43,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 6085 transitions. [2022-11-25 17:45:43,548 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4637957317073171 [2022-11-25 17:45:43,548 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 6085 transitions. [2022-11-25 17:45:43,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 6085 transitions. [2022-11-25 17:45:43,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:43,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 6085 transitions. [2022-11-25 17:45:43,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 190.15625) internal successors, (6085), 32 states have internal predecessors, (6085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:43,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 410.0) internal successors, (13530), 33 states have internal predecessors, (13530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:43,593 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 410.0) internal successors, (13530), 33 states have internal predecessors, (13530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:43,593 INFO L175 Difference]: Start difference. First operand has 86 places, 56 transitions, 283 flow. Second operand 32 states and 6085 transitions. [2022-11-25 17:45:43,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 64 transitions, 459 flow [2022-11-25 17:45:43,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 64 transitions, 455 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:45:43,601 INFO L231 Difference]: Finished difference. Result has 123 places, 64 transitions, 443 flow [2022-11-25 17:45:43,601 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=443, PETRI_PLACES=123, PETRI_TRANSITIONS=64} [2022-11-25 17:45:43,602 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 83 predicate places. [2022-11-25 17:45:43,602 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 64 transitions, 443 flow [2022-11-25 17:45:43,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 189.25) internal successors, (6056), 32 states have internal predecessors, (6056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:43,604 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:43,605 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:43,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 17:45:43,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-25 17:45:43,827 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 17:45:43,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:43,828 INFO L85 PathProgramCache]: Analyzing trace with hash 908206235, now seen corresponding path program 2 times [2022-11-25 17:45:43,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:43,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913112054] [2022-11-25 17:45:43,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:43,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:44,302 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:45:44,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [100040176] [2022-11-25 17:45:44,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:45:44,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:44,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:45:44,307 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:45:44,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-25 17:45:47,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:45:47,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:45:47,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 7167 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:45:47,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:45:48,014 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-25 17:45:48,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:45:48,091 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-25 17:45:48,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:48,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913112054] [2022-11-25 17:45:48,092 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:45:48,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100040176] [2022-11-25 17:45:48,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100040176] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:45:48,093 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:45:48,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-11-25 17:45:48,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665672399] [2022-11-25 17:45:48,094 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:45:48,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:45:48,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:48,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:45:48,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:45:48,196 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 410 [2022-11-25 17:45:48,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 64 transitions, 443 flow. Second operand has 6 states, 6 states have (on average 190.5) internal successors, (1143), 6 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:48,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:48,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 410 [2022-11-25 17:45:48,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:48,969 INFO L130 PetriNetUnfolder]: 363/709 cut-off events. [2022-11-25 17:45:48,969 INFO L131 PetriNetUnfolder]: For 1655/1655 co-relation queries the response was YES. [2022-11-25 17:45:48,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1964 conditions, 709 events. 363/709 cut-off events. For 1655/1655 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2101 event pairs, 274 based on Foata normal form. 3/508 useless extension candidates. Maximal degree in co-relation 1919. Up to 577 conditions per place. [2022-11-25 17:45:48,977 INFO L137 encePairwiseOnDemand]: 406/410 looper letters, 155 selfloop transitions, 6 changer transitions 0/161 dead transitions. [2022-11-25 17:45:48,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 161 transitions, 1580 flow [2022-11-25 17:45:48,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:45:48,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:45:48,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1172 transitions. [2022-11-25 17:45:48,986 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4764227642276423 [2022-11-25 17:45:48,986 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1172 transitions. [2022-11-25 17:45:48,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1172 transitions. [2022-11-25 17:45:48,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:48,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1172 transitions. [2022-11-25 17:45:48,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 195.33333333333334) internal successors, (1172), 6 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:48,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:48,998 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 410.0) internal successors, (2870), 7 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:48,998 INFO L175 Difference]: Start difference. First operand has 123 places, 64 transitions, 443 flow. Second operand 6 states and 1172 transitions. [2022-11-25 17:45:48,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 161 transitions, 1580 flow [2022-11-25 17:45:49,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 161 transitions, 1194 flow, removed 100 selfloop flow, removed 23 redundant places. [2022-11-25 17:45:49,014 INFO L231 Difference]: Finished difference. Result has 109 places, 67 transitions, 509 flow [2022-11-25 17:45:49,014 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=509, PETRI_PLACES=109, PETRI_TRANSITIONS=67} [2022-11-25 17:45:49,015 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 69 predicate places. [2022-11-25 17:45:49,015 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 67 transitions, 509 flow [2022-11-25 17:45:49,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.5) internal successors, (1143), 6 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:49,016 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:49,016 INFO L209 CegarLoopForPetriNet]: trace histogram [120, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:49,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-25 17:45:49,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-25 17:45:49,243 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-25 17:45:49,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:49,243 INFO L85 PathProgramCache]: Analyzing trace with hash 147412537, now seen corresponding path program 3 times [2022-11-25 17:45:49,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:49,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827673932] [2022-11-25 17:45:49,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:49,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:50,909 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:45:50,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [110468669] [2022-11-25 17:45:50,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:45:50,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:50,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:45:50,912 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:45:50,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac10000b-52c9-47a0-841b-44b34bee927e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process