./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro --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 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a --- 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-8393723 [2022-11-18 19:53:36,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:53:36,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:53:36,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:53:36,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:53:36,232 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:53:36,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:53:36,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:53:36,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:53:36,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:53:36,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:53:36,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:53:36,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:53:36,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:53:36,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:53:36,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:53:36,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:53:36,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:53:36,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:53:36,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:53:36,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:53:36,274 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:53:36,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:53:36,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:53:36,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:53:36,279 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:53:36,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:53:36,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:53:36,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:53:36,282 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:53:36,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:53:36,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:53:36,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:53:36,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:53:36,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:53:36,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:53:36,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:53:36,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:53:36,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:53:36,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:53:36,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:53:36,295 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:53:36,325 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:53:36,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:53:36,325 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:53:36,326 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:53:36,326 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:53:36,327 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:53:36,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:53:36,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:53:36,328 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:53:36,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:53:36,328 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:53:36,328 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:53:36,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:53:36,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:53:36,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:53:36,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:53:36,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:53:36,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:53:36,329 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:53:36,330 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:53:36,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:53:36,330 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:53:36,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:53:36,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:53:36,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:53:36,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:53:36,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:53:36,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:53:36,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:53:36,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:53:36,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:53:36,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:53:36,332 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:53:36,332 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:53:36,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:53:36,333 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a [2022-11-18 19:53:36,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:53:36,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:53:36,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:53:36,611 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:53:36,612 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:53:36,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2022-11-18 19:53:36,684 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/data/958d7ebbe/046f20f51c874fe69e8cd458cf23380f/FLAG9bf56a8c0 [2022-11-18 19:53:37,246 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:53:37,246 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2022-11-18 19:53:37,276 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/data/958d7ebbe/046f20f51c874fe69e8cd458cf23380f/FLAG9bf56a8c0 [2022-11-18 19:53:37,511 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/data/958d7ebbe/046f20f51c874fe69e8cd458cf23380f [2022-11-18 19:53:37,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:53:37,515 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:53:37,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:53:37,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:53:37,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:53:37,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:53:37" (1/1) ... [2022-11-18 19:53:37,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46bf6bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:37, skipping insertion in model container [2022-11-18 19:53:37,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:53:37" (1/1) ... [2022-11-18 19:53:37,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:53:37,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:53:38,185 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 19:53:38,186 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 19:53:38,188 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 19:53:38,189 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 19:53:38,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:53:38,256 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:53:38,307 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 19:53:38,309 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 19:53:38,310 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 19:53:38,311 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 19:53:38,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:53:38,405 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:53:38,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:38 WrapperNode [2022-11-18 19:53:38,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:53:38,407 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:53:38,407 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:53:38,407 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:53:38,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:38" (1/1) ... [2022-11-18 19:53:38,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:38" (1/1) ... [2022-11-18 19:53:38,497 INFO L138 Inliner]: procedures = 273, calls = 38, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 166 [2022-11-18 19:53:38,497 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:53:38,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:53:38,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:53:38,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:53:38,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:38" (1/1) ... [2022-11-18 19:53:38,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:38" (1/1) ... [2022-11-18 19:53:38,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:38" (1/1) ... [2022-11-18 19:53:38,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:38" (1/1) ... [2022-11-18 19:53:38,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:38" (1/1) ... [2022-11-18 19:53:38,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:38" (1/1) ... [2022-11-18 19:53:38,559 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:38" (1/1) ... [2022-11-18 19:53:38,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:38" (1/1) ... [2022-11-18 19:53:38,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:53:38,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:53:38,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:53:38,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:53:38,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:38" (1/1) ... [2022-11-18 19:53:38,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:53:38,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:38,598 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:53:38,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:53:38,649 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-18 19:53:38,649 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-18 19:53:38,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:53:38,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 19:53:38,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:53:38,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:53:38,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:53:38,650 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 19:53:38,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:53:38,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:53:38,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 19:53:38,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:53:38,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:53:38,652 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:53:38,856 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:53:38,858 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:53:39,206 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:53:39,214 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:53:39,215 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 19:53:39,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:53:39 BoogieIcfgContainer [2022-11-18 19:53:39,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:53:39,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:53:39,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:53:39,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:53:39,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:53:37" (1/3) ... [2022-11-18 19:53:39,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fff5256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:53:39, skipping insertion in model container [2022-11-18 19:53:39,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:53:38" (2/3) ... [2022-11-18 19:53:39,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fff5256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:53:39, skipping insertion in model container [2022-11-18 19:53:39,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:53:39" (3/3) ... [2022-11-18 19:53:39,226 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_24-evilcollapse_nr.i [2022-11-18 19:53:39,234 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:53:39,245 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:53:39,245 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-18 19:53:39,245 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:53:39,419 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 19:53:39,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 259 transitions, 528 flow [2022-11-18 19:53:39,635 INFO L130 PetriNetUnfolder]: 17/257 cut-off events. [2022-11-18 19:53:39,636 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:53:39,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 257 events. 17/257 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 580 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 198. Up to 2 conditions per place. [2022-11-18 19:53:39,645 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 259 transitions, 528 flow [2022-11-18 19:53:39,662 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 247 places, 257 transitions, 520 flow [2022-11-18 19:53:39,678 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:53:39,684 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;@1e54533c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:53:39,684 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-18 19:53:39,695 INFO L130 PetriNetUnfolder]: 2/55 cut-off events. [2022-11-18 19:53:39,695 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:53:39,696 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:39,696 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:39,697 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)] === [2022-11-18 19:53:39,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:39,702 INFO L85 PathProgramCache]: Analyzing trace with hash -784437459, now seen corresponding path program 1 times [2022-11-18 19:53:39,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:39,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619409966] [2022-11-18 19:53:39,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:39,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:39,854 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:53:39,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [733689761] [2022-11-18 19:53:39,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:39,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:39,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:39,859 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:39,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:53:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:40,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:53:40,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:40,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:40,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:53:40,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:40,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619409966] [2022-11-18 19:53:40,123 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:53:40,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733689761] [2022-11-18 19:53:40,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733689761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:40,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:40,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:53:40,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701695170] [2022-11-18 19:53:40,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:40,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:53:40,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:40,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:53:40,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:53:40,208 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 259 [2022-11-18 19:53:40,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 257 transitions, 520 flow. Second operand has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:40,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:40,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 259 [2022-11-18 19:53:40,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:40,371 INFO L130 PetriNetUnfolder]: 8/307 cut-off events. [2022-11-18 19:53:40,371 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 19:53:40,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 307 events. 8/307 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 792 event pairs, 0 based on Foata normal form. 10/287 useless extension candidates. Maximal degree in co-relation 275. Up to 17 conditions per place. [2022-11-18 19:53:40,378 INFO L137 encePairwiseOnDemand]: 244/259 looper letters, 23 selfloop transitions, 2 changer transitions 2/256 dead transitions. [2022-11-18 19:53:40,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 256 transitions, 568 flow [2022-11-18 19:53:40,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:53:40,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:53:40,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 739 transitions. [2022-11-18 19:53:40,396 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9510939510939511 [2022-11-18 19:53:40,397 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 739 transitions. [2022-11-18 19:53:40,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 739 transitions. [2022-11-18 19:53:40,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:40,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 739 transitions. [2022-11-18 19:53:40,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.33333333333334) internal successors, (739), 3 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:40,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:40,424 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:40,426 INFO L175 Difference]: Start difference. First operand has 247 places, 257 transitions, 520 flow. Second operand 3 states and 739 transitions. [2022-11-18 19:53:40,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 256 transitions, 568 flow [2022-11-18 19:53:40,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 256 transitions, 566 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:53:40,442 INFO L231 Difference]: Finished difference. Result has 248 places, 246 transitions, 510 flow [2022-11-18 19:53:40,444 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=510, PETRI_PLACES=248, PETRI_TRANSITIONS=246} [2022-11-18 19:53:40,451 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 1 predicate places. [2022-11-18 19:53:40,452 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 246 transitions, 510 flow [2022-11-18 19:53:40,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:40,457 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:40,457 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:40,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 19:53:40,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-18 19:53:40,663 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 19:53:40,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:40,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1452242165, now seen corresponding path program 1 times [2022-11-18 19:53:40,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:40,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904036315] [2022-11-18 19:53:40,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:40,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:40,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:40,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:40,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904036315] [2022-11-18 19:53:40,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904036315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:40,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:40,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:53:40,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681457575] [2022-11-18 19:53:40,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:40,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:53:40,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:40,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:53:40,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:53:40,936 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 259 [2022-11-18 19:53:40,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 246 transitions, 510 flow. Second operand has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:40,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:40,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 259 [2022-11-18 19:53:40,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:41,072 INFO L130 PetriNetUnfolder]: 8/389 cut-off events. [2022-11-18 19:53:41,072 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 19:53:41,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 389 events. 8/389 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 867 event pairs, 0 based on Foata normal form. 2/362 useless extension candidates. Maximal degree in co-relation 294. Up to 22 conditions per place. [2022-11-18 19:53:41,077 INFO L137 encePairwiseOnDemand]: 254/259 looper letters, 17 selfloop transitions, 2 changer transitions 0/252 dead transitions. [2022-11-18 19:53:41,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 252 transitions, 560 flow [2022-11-18 19:53:41,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:53:41,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:53:41,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 730 transitions. [2022-11-18 19:53:41,082 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9395109395109396 [2022-11-18 19:53:41,082 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 730 transitions. [2022-11-18 19:53:41,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 730 transitions. [2022-11-18 19:53:41,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:41,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 730 transitions. [2022-11-18 19:53:41,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:41,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:41,091 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:41,091 INFO L175 Difference]: Start difference. First operand has 248 places, 246 transitions, 510 flow. Second operand 3 states and 730 transitions. [2022-11-18 19:53:41,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 252 transitions, 560 flow [2022-11-18 19:53:41,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 252 transitions, 558 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:53:41,104 INFO L231 Difference]: Finished difference. Result has 248 places, 247 transitions, 524 flow [2022-11-18 19:53:41,104 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=524, PETRI_PLACES=248, PETRI_TRANSITIONS=247} [2022-11-18 19:53:41,105 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 1 predicate places. [2022-11-18 19:53:41,106 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 247 transitions, 524 flow [2022-11-18 19:53:41,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:41,107 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:41,107 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:41,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:53:41,109 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 19:53:41,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:41,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1781092602, now seen corresponding path program 1 times [2022-11-18 19:53:41,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:41,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392802133] [2022-11-18 19:53:41,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:41,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:41,185 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:53:41,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1708281624] [2022-11-18 19:53:41,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:41,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:41,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:41,188 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:41,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:53:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:41,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:53:41,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:41,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:41,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:53:41,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:41,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392802133] [2022-11-18 19:53:41,540 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:53:41,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708281624] [2022-11-18 19:53:41,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708281624] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:41,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:41,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:53:41,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432414420] [2022-11-18 19:53:41,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:41,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:53:41,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:41,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:53:41,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:53:41,547 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 259 [2022-11-18 19:53:41,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 247 transitions, 524 flow. Second operand has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:41,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:41,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 259 [2022-11-18 19:53:41,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:41,670 INFO L130 PetriNetUnfolder]: 8/389 cut-off events. [2022-11-18 19:53:41,670 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-18 19:53:41,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 389 events. 8/389 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 864 event pairs, 0 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 247. Up to 30 conditions per place. [2022-11-18 19:53:41,673 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 23 selfloop transitions, 5 changer transitions 0/256 dead transitions. [2022-11-18 19:53:41,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 256 transitions, 598 flow [2022-11-18 19:53:41,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:53:41,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:53:41,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1184 transitions. [2022-11-18 19:53:41,694 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9142857142857143 [2022-11-18 19:53:41,694 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1184 transitions. [2022-11-18 19:53:41,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1184 transitions. [2022-11-18 19:53:41,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:41,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1184 transitions. [2022-11-18 19:53:41,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 236.8) internal successors, (1184), 5 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:41,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:41,703 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:41,703 INFO L175 Difference]: Start difference. First operand has 248 places, 247 transitions, 524 flow. Second operand 5 states and 1184 transitions. [2022-11-18 19:53:41,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 256 transitions, 598 flow [2022-11-18 19:53:41,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 256 transitions, 596 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:53:41,709 INFO L231 Difference]: Finished difference. Result has 255 places, 250 transitions, 556 flow [2022-11-18 19:53:41,710 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=556, PETRI_PLACES=255, PETRI_TRANSITIONS=250} [2022-11-18 19:53:41,712 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 8 predicate places. [2022-11-18 19:53:41,713 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 250 transitions, 556 flow [2022-11-18 19:53:41,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:41,714 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:41,714 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:41,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 19:53:41,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:41,919 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 19:53:41,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:41,920 INFO L85 PathProgramCache]: Analyzing trace with hash 620704563, now seen corresponding path program 1 times [2022-11-18 19:53:41,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:41,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160787131] [2022-11-18 19:53:41,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:41,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:41,977 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:53:41,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [320791430] [2022-11-18 19:53:41,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:41,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:41,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:41,985 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:41,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:53:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:42,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:53:42,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:42,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:42,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:53:42,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:42,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160787131] [2022-11-18 19:53:42,248 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:53:42,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320791430] [2022-11-18 19:53:42,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320791430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:42,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:42,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:53:42,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882230670] [2022-11-18 19:53:42,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:42,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:53:42,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:42,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:53:42,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:53:42,254 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 259 [2022-11-18 19:53:42,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 250 transitions, 556 flow. Second operand has 4 states, 4 states have (on average 233.25) internal successors, (933), 4 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:42,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:42,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 259 [2022-11-18 19:53:42,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:42,378 INFO L130 PetriNetUnfolder]: 8/385 cut-off events. [2022-11-18 19:53:42,378 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-18 19:53:42,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 385 events. 8/385 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 856 event pairs, 0 based on Foata normal form. 4/370 useless extension candidates. Maximal degree in co-relation 296. Up to 28 conditions per place. [2022-11-18 19:53:42,381 INFO L137 encePairwiseOnDemand]: 255/259 looper letters, 16 selfloop transitions, 5 changer transitions 0/249 dead transitions. [2022-11-18 19:53:42,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 249 transitions, 596 flow [2022-11-18 19:53:42,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:53:42,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:53:42,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 943 transitions. [2022-11-18 19:53:42,384 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9102316602316602 [2022-11-18 19:53:42,384 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 943 transitions. [2022-11-18 19:53:42,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 943 transitions. [2022-11-18 19:53:42,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:42,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 943 transitions. [2022-11-18 19:53:42,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 235.75) internal successors, (943), 4 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:42,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:42,391 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:42,391 INFO L175 Difference]: Start difference. First operand has 255 places, 250 transitions, 556 flow. Second operand 4 states and 943 transitions. [2022-11-18 19:53:42,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 249 transitions, 596 flow [2022-11-18 19:53:42,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 249 transitions, 587 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:53:42,397 INFO L231 Difference]: Finished difference. Result has 255 places, 249 transitions, 558 flow [2022-11-18 19:53:42,398 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=558, PETRI_PLACES=255, PETRI_TRANSITIONS=249} [2022-11-18 19:53:42,399 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 8 predicate places. [2022-11-18 19:53:42,399 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 249 transitions, 558 flow [2022-11-18 19:53:42,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 233.25) internal successors, (933), 4 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:42,400 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:42,401 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:42,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:42,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:42,607 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 19:53:42,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:42,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1850046175, now seen corresponding path program 1 times [2022-11-18 19:53:42,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:42,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18909196] [2022-11-18 19:53:42,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:42,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:42,652 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:53:42,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [895355584] [2022-11-18 19:53:42,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:42,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:42,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:42,662 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:42,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:53:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:42,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:53:42,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:42,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:42,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:43,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:43,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:43,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18909196] [2022-11-18 19:53:43,028 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:53:43,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895355584] [2022-11-18 19:53:43,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895355584] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:43,028 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:53:43,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 19:53:43,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650124650] [2022-11-18 19:53:43,029 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:43,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:53:43,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:43,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:53:43,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:53:43,034 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 259 [2022-11-18 19:53:43,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 249 transitions, 558 flow. Second operand has 8 states, 8 states have (on average 233.875) internal successors, (1871), 8 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:43,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:43,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 259 [2022-11-18 19:53:43,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:43,263 INFO L130 PetriNetUnfolder]: 8/471 cut-off events. [2022-11-18 19:53:43,264 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-11-18 19:53:43,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 609 conditions, 471 events. 8/471 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 604 event pairs, 0 based on Foata normal form. 6/458 useless extension candidates. Maximal degree in co-relation 363. Up to 22 conditions per place. [2022-11-18 19:53:43,266 INFO L137 encePairwiseOnDemand]: 252/259 looper letters, 29 selfloop transitions, 10 changer transitions 0/267 dead transitions. [2022-11-18 19:53:43,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 267 transitions, 690 flow [2022-11-18 19:53:43,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:53:43,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:53:43,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2120 transitions. [2022-11-18 19:53:43,272 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9094809094809094 [2022-11-18 19:53:43,272 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2120 transitions. [2022-11-18 19:53:43,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2120 transitions. [2022-11-18 19:53:43,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:43,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2120 transitions. [2022-11-18 19:53:43,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 235.55555555555554) internal successors, (2120), 9 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:43,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 259.0) internal successors, (2590), 10 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:43,286 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 259.0) internal successors, (2590), 10 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:43,286 INFO L175 Difference]: Start difference. First operand has 255 places, 249 transitions, 558 flow. Second operand 9 states and 2120 transitions. [2022-11-18 19:53:43,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 267 transitions, 690 flow [2022-11-18 19:53:43,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 267 transitions, 677 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:53:43,293 INFO L231 Difference]: Finished difference. Result has 266 places, 253 transitions, 608 flow [2022-11-18 19:53:43,293 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=608, PETRI_PLACES=266, PETRI_TRANSITIONS=253} [2022-11-18 19:53:43,294 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 19 predicate places. [2022-11-18 19:53:43,294 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 253 transitions, 608 flow [2022-11-18 19:53:43,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 233.875) internal successors, (1871), 8 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:43,295 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:43,296 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:43,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:43,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:43,502 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 19:53:43,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:43,503 INFO L85 PathProgramCache]: Analyzing trace with hash 505126278, now seen corresponding path program 1 times [2022-11-18 19:53:43,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:43,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686509579] [2022-11-18 19:53:43,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:43,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:43,569 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:53:43,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [77851849] [2022-11-18 19:53:43,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:43,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:43,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:43,573 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:43,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:53:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:43,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:53:43,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:44,069 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:44,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:44,318 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:44,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:44,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686509579] [2022-11-18 19:53:44,319 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:53:44,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77851849] [2022-11-18 19:53:44,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77851849] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:44,319 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:53:44,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 19:53:44,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765913236] [2022-11-18 19:53:44,320 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:44,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:53:44,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:44,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:53:44,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:53:44,328 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 259 [2022-11-18 19:53:44,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 253 transitions, 608 flow. Second operand has 14 states, 14 states have (on average 234.64285714285714) internal successors, (3285), 14 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:44,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:44,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 259 [2022-11-18 19:53:44,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:44,657 INFO L130 PetriNetUnfolder]: 15/741 cut-off events. [2022-11-18 19:53:44,657 INFO L131 PetriNetUnfolder]: For 122/122 co-relation queries the response was YES. [2022-11-18 19:53:44,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 975 conditions, 741 events. 15/741 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1731 event pairs, 0 based on Foata normal form. 4/707 useless extension candidates. Maximal degree in co-relation 631. Up to 19 conditions per place. [2022-11-18 19:53:44,661 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 37 selfloop transitions, 16 changer transitions 0/281 dead transitions. [2022-11-18 19:53:44,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 281 transitions, 822 flow [2022-11-18 19:53:44,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:53:44,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 19:53:44,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3520 transitions. [2022-11-18 19:53:44,670 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9060489060489061 [2022-11-18 19:53:44,670 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3520 transitions. [2022-11-18 19:53:44,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3520 transitions. [2022-11-18 19:53:44,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:44,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3520 transitions. [2022-11-18 19:53:44,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 234.66666666666666) internal successors, (3520), 15 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:44,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 259.0) internal successors, (4144), 16 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:44,694 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 259.0) internal successors, (4144), 16 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:44,694 INFO L175 Difference]: Start difference. First operand has 266 places, 253 transitions, 608 flow. Second operand 15 states and 3520 transitions. [2022-11-18 19:53:44,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 281 transitions, 822 flow [2022-11-18 19:53:44,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 281 transitions, 804 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-18 19:53:44,705 INFO L231 Difference]: Finished difference. Result has 275 places, 257 transitions, 657 flow [2022-11-18 19:53:44,706 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=657, PETRI_PLACES=275, PETRI_TRANSITIONS=257} [2022-11-18 19:53:44,709 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 28 predicate places. [2022-11-18 19:53:44,709 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 257 transitions, 657 flow [2022-11-18 19:53:44,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 234.64285714285714) internal successors, (3285), 14 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:44,711 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:44,711 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:44,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-18 19:53:44,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:44,918 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 19:53:44,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:44,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1429378977, now seen corresponding path program 2 times [2022-11-18 19:53:44,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:44,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467450157] [2022-11-18 19:53:44,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:44,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:44,960 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:53:44,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1307106393] [2022-11-18 19:53:44,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:53:44,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:44,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:44,989 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:45,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:53:45,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:53:45,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:53:45,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:53:45,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:45,405 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-18 19:53:45,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:53:45,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:45,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467450157] [2022-11-18 19:53:45,410 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:53:45,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307106393] [2022-11-18 19:53:45,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307106393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:45,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:45,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:53:45,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429067601] [2022-11-18 19:53:45,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:45,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:53:45,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:45,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:53:45,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:53:45,414 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 259 [2022-11-18 19:53:45,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 257 transitions, 657 flow. Second operand has 4 states, 4 states have (on average 230.75) internal successors, (923), 4 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:45,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:45,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 259 [2022-11-18 19:53:45,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:45,619 INFO L130 PetriNetUnfolder]: 15/741 cut-off events. [2022-11-18 19:53:45,619 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2022-11-18 19:53:45,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 981 conditions, 741 events. 15/741 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1730 event pairs, 0 based on Foata normal form. 0/705 useless extension candidates. Maximal degree in co-relation 628. Up to 50 conditions per place. [2022-11-18 19:53:45,624 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 29 selfloop transitions, 5 changer transitions 0/269 dead transitions. [2022-11-18 19:53:45,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 269 transitions, 749 flow [2022-11-18 19:53:45,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:53:45,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:53:45,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1175 transitions. [2022-11-18 19:53:45,628 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9073359073359073 [2022-11-18 19:53:45,628 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1175 transitions. [2022-11-18 19:53:45,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1175 transitions. [2022-11-18 19:53:45,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:45,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1175 transitions. [2022-11-18 19:53:45,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:45,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:45,635 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:45,635 INFO L175 Difference]: Start difference. First operand has 275 places, 257 transitions, 657 flow. Second operand 5 states and 1175 transitions. [2022-11-18 19:53:45,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 269 transitions, 749 flow [2022-11-18 19:53:45,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 269 transitions, 690 flow, removed 11 selfloop flow, removed 13 redundant places. [2022-11-18 19:53:45,648 INFO L231 Difference]: Finished difference. Result has 270 places, 260 transitions, 632 flow [2022-11-18 19:53:45,648 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=632, PETRI_PLACES=270, PETRI_TRANSITIONS=260} [2022-11-18 19:53:45,649 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 23 predicate places. [2022-11-18 19:53:45,649 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 260 transitions, 632 flow [2022-11-18 19:53:45,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 230.75) internal successors, (923), 4 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:45,650 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:45,650 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:45,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:45,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 19:53:45,856 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 19:53:45,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:45,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1361075661, now seen corresponding path program 1 times [2022-11-18 19:53:45,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:45,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856775327] [2022-11-18 19:53:45,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:45,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:45,911 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:53:45,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1409784770] [2022-11-18 19:53:45,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:45,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:45,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:45,913 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:45,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:53:46,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:46,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:53:46,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:46,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:46,691 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:46,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:46,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856775327] [2022-11-18 19:53:46,692 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:53:46,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409784770] [2022-11-18 19:53:46,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409784770] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:46,692 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:53:46,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-18 19:53:46,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850380939] [2022-11-18 19:53:46,693 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:46,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:53:46,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:46,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:53:46,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:53:46,699 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 259 [2022-11-18 19:53:46,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 260 transitions, 632 flow. Second operand has 16 states, 16 states have (on average 234.6875) internal successors, (3755), 16 states have internal predecessors, (3755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:46,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:46,705 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 259 [2022-11-18 19:53:46,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:47,168 INFO L130 PetriNetUnfolder]: 8/805 cut-off events. [2022-11-18 19:53:47,168 INFO L131 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2022-11-18 19:53:47,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1116 conditions, 805 events. 8/805 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 627 event pairs, 0 based on Foata normal form. 8/798 useless extension candidates. Maximal degree in co-relation 650. Up to 20 conditions per place. [2022-11-18 19:53:47,171 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 60 selfloop transitions, 22 changer transitions 0/313 dead transitions. [2022-11-18 19:53:47,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 313 transitions, 989 flow [2022-11-18 19:53:47,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 19:53:47,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 19:53:47,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4936 transitions. [2022-11-18 19:53:47,181 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9075197646626219 [2022-11-18 19:53:47,182 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4936 transitions. [2022-11-18 19:53:47,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4936 transitions. [2022-11-18 19:53:47,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:47,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4936 transitions. [2022-11-18 19:53:47,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 235.04761904761904) internal successors, (4936), 21 states have internal predecessors, (4936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:47,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 259.0) internal successors, (5698), 22 states have internal predecessors, (5698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:47,208 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 259.0) internal successors, (5698), 22 states have internal predecessors, (5698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:47,208 INFO L175 Difference]: Start difference. First operand has 270 places, 260 transitions, 632 flow. Second operand 21 states and 4936 transitions. [2022-11-18 19:53:47,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 313 transitions, 989 flow [2022-11-18 19:53:47,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 313 transitions, 979 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-18 19:53:47,215 INFO L231 Difference]: Finished difference. Result has 294 places, 269 transitions, 742 flow [2022-11-18 19:53:47,215 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=742, PETRI_PLACES=294, PETRI_TRANSITIONS=269} [2022-11-18 19:53:47,216 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 47 predicate places. [2022-11-18 19:53:47,216 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 269 transitions, 742 flow [2022-11-18 19:53:47,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 234.6875) internal successors, (3755), 16 states have internal predecessors, (3755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:47,218 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:47,218 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:47,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:47,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:47,426 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 19:53:47,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:47,426 INFO L85 PathProgramCache]: Analyzing trace with hash -984629043, now seen corresponding path program 2 times [2022-11-18 19:53:47,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:47,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534502189] [2022-11-18 19:53:47,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:47,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:47,501 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:53:47,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [451613220] [2022-11-18 19:53:47,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:53:47,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:47,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:47,503 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:47,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:53:47,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:53:47,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:53:47,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:53:47,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:48,202 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2022-11-18 19:53:48,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:53:48,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:48,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534502189] [2022-11-18 19:53:48,203 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:53:48,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451613220] [2022-11-18 19:53:48,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451613220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:48,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:48,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:53:48,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383285637] [2022-11-18 19:53:48,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:48,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:53:48,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:48,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:53:48,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:53:48,209 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 259 [2022-11-18 19:53:48,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 269 transitions, 742 flow. Second operand has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:48,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:48,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 259 [2022-11-18 19:53:48,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:48,459 INFO L130 PetriNetUnfolder]: 8/803 cut-off events. [2022-11-18 19:53:48,460 INFO L131 PetriNetUnfolder]: For 180/180 co-relation queries the response was YES. [2022-11-18 19:53:48,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1122 conditions, 803 events. 8/803 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 622 event pairs, 0 based on Foata normal form. 2/790 useless extension candidates. Maximal degree in co-relation 651. Up to 80 conditions per place. [2022-11-18 19:53:48,463 INFO L137 encePairwiseOnDemand]: 255/259 looper letters, 18 selfloop transitions, 5 changer transitions 0/267 dead transitions. [2022-11-18 19:53:48,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 267 transitions, 778 flow [2022-11-18 19:53:48,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:53:48,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:53:48,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 933 transitions. [2022-11-18 19:53:48,466 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9005791505791506 [2022-11-18 19:53:48,467 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 933 transitions. [2022-11-18 19:53:48,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 933 transitions. [2022-11-18 19:53:48,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:48,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 933 transitions. [2022-11-18 19:53:48,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 233.25) internal successors, (933), 4 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:48,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:48,473 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:48,473 INFO L175 Difference]: Start difference. First operand has 294 places, 269 transitions, 742 flow. Second operand 4 states and 933 transitions. [2022-11-18 19:53:48,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 267 transitions, 778 flow [2022-11-18 19:53:48,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 267 transitions, 755 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-18 19:53:48,480 INFO L231 Difference]: Finished difference. Result has 285 places, 267 transitions, 719 flow [2022-11-18 19:53:48,480 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=719, PETRI_PLACES=285, PETRI_TRANSITIONS=267} [2022-11-18 19:53:48,482 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 38 predicate places. [2022-11-18 19:53:48,482 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 267 transitions, 719 flow [2022-11-18 19:53:48,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:48,483 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:48,483 INFO L209 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:48,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:48,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:48,690 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 19:53:48,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:48,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1280389661, now seen corresponding path program 1 times [2022-11-18 19:53:48,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:48,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92754599] [2022-11-18 19:53:48,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:48,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:48,768 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:53:48,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1140039959] [2022-11-18 19:53:48,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:48,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:48,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:48,770 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:48,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:53:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:49,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 1490 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 19:53:49,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:49,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 313 proven. 868 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:53:49,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:50,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 313 proven. 868 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:53:50,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:50,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92754599] [2022-11-18 19:53:50,597 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:53:50,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140039959] [2022-11-18 19:53:50,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140039959] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:50,597 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:53:50,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-18 19:53:50,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170727477] [2022-11-18 19:53:50,598 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:50,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 19:53:50,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:50,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 19:53:50,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-18 19:53:50,612 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 259 [2022-11-18 19:53:50,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 267 transitions, 719 flow. Second operand has 32 states, 32 states have (on average 235.4375) internal successors, (7534), 32 states have internal predecessors, (7534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:50,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:50,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 259 [2022-11-18 19:53:50,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:53:51,993 INFO L130 PetriNetUnfolder]: 8/1475 cut-off events. [2022-11-18 19:53:51,993 INFO L131 PetriNetUnfolder]: For 725/725 co-relation queries the response was YES. [2022-11-18 19:53:51,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2236 conditions, 1475 events. 8/1475 cut-off events. For 725/725 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 662 event pairs, 0 based on Foata normal form. 16/1476 useless extension candidates. Maximal degree in co-relation 1240. Up to 38 conditions per place. [2022-11-18 19:53:51,999 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 124 selfloop transitions, 46 changer transitions 0/399 dead transitions. [2022-11-18 19:53:51,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 399 transitions, 1655 flow [2022-11-18 19:53:51,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-18 19:53:51,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-18 19:53:52,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 10572 transitions. [2022-11-18 19:53:52,019 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9070785070785071 [2022-11-18 19:53:52,020 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 10572 transitions. [2022-11-18 19:53:52,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 10572 transitions. [2022-11-18 19:53:52,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:53:52,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 10572 transitions. [2022-11-18 19:53:52,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 234.93333333333334) internal successors, (10572), 45 states have internal predecessors, (10572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:52,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 259.0) internal successors, (11914), 46 states have internal predecessors, (11914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:52,077 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 259.0) internal successors, (11914), 46 states have internal predecessors, (11914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:52,077 INFO L175 Difference]: Start difference. First operand has 285 places, 267 transitions, 719 flow. Second operand 45 states and 10572 transitions. [2022-11-18 19:53:52,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 399 transitions, 1655 flow [2022-11-18 19:53:52,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 399 transitions, 1645 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:53:52,131 INFO L231 Difference]: Finished difference. Result has 335 places, 292 transitions, 1032 flow [2022-11-18 19:53:52,132 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1032, PETRI_PLACES=335, PETRI_TRANSITIONS=292} [2022-11-18 19:53:52,132 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 88 predicate places. [2022-11-18 19:53:52,132 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 292 transitions, 1032 flow [2022-11-18 19:53:52,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 235.4375) internal successors, (7534), 32 states have internal predecessors, (7534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:52,135 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:53:52,136 INFO L209 CegarLoopForPetriNet]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:52,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:52,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 19:53:52,345 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 19:53:52,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:52,345 INFO L85 PathProgramCache]: Analyzing trace with hash -808702947, now seen corresponding path program 2 times [2022-11-18 19:53:52,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:53:52,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149101877] [2022-11-18 19:53:52,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:52,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:53:52,475 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:53:52,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2064038149] [2022-11-18 19:53:52,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:53:52,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:53:52,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:53:52,477 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:53:52,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:53:53,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:53:53,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:53:53,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 2826 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 19:53:53,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:54,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4979 backedges. 657 proven. 4320 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:53:54,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:56,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4979 backedges. 657 proven. 4320 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:53:56,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:53:56,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149101877] [2022-11-18 19:53:56,511 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:53:56,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064038149] [2022-11-18 19:53:56,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064038149] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:56,512 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:53:56,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-18 19:53:56,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390050219] [2022-11-18 19:53:56,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:56,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-18 19:53:56,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:53:56,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-18 19:53:56,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-18 19:53:56,529 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 259 [2022-11-18 19:53:56,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 292 transitions, 1032 flow. Second operand has 61 states, 61 states have (on average 235.54098360655738) internal successors, (14368), 61 states have internal predecessors, (14368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:53:56,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:53:56,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 259 [2022-11-18 19:53:56,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:00,512 INFO L130 PetriNetUnfolder]: 8/2735 cut-off events. [2022-11-18 19:54:00,512 INFO L131 PetriNetUnfolder]: For 4813/4813 co-relation queries the response was YES. [2022-11-18 19:54:00,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4575 conditions, 2735 events. 8/2735 cut-off events. For 4813/4813 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 736 event pairs, 0 based on Foata normal form. 30/2750 useless extension candidates. Maximal degree in co-relation 2465. Up to 98 conditions per place. [2022-11-18 19:54:00,521 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 244 selfloop transitions, 91 changer transitions 0/564 dead transitions. [2022-11-18 19:54:00,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 564 transitions, 3144 flow [2022-11-18 19:54:00,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-18 19:54:00,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-18 19:54:00,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 21139 transitions. [2022-11-18 19:54:00,555 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9068640068640068 [2022-11-18 19:54:00,555 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 21139 transitions. [2022-11-18 19:54:00,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 21139 transitions. [2022-11-18 19:54:00,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:00,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 21139 transitions. [2022-11-18 19:54:00,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 234.87777777777777) internal successors, (21139), 90 states have internal predecessors, (21139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:00,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 259.0) internal successors, (23569), 91 states have internal predecessors, (23569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:00,639 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 259.0) internal successors, (23569), 91 states have internal predecessors, (23569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:00,639 INFO L175 Difference]: Start difference. First operand has 335 places, 292 transitions, 1032 flow. Second operand 90 states and 21139 transitions. [2022-11-18 19:54:00,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 564 transitions, 3144 flow [2022-11-18 19:54:00,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 564 transitions, 3057 flow, removed 25 selfloop flow, removed 18 redundant places. [2022-11-18 19:54:00,663 INFO L231 Difference]: Finished difference. Result has 422 places, 338 transitions, 1664 flow [2022-11-18 19:54:00,664 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=1664, PETRI_PLACES=422, PETRI_TRANSITIONS=338} [2022-11-18 19:54:00,665 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 175 predicate places. [2022-11-18 19:54:00,665 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 338 transitions, 1664 flow [2022-11-18 19:54:00,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 235.54098360655738) internal successors, (14368), 61 states have internal predecessors, (14368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:00,669 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:00,670 INFO L209 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:00,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:00,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:00,881 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 19:54:00,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:00,882 INFO L85 PathProgramCache]: Analyzing trace with hash -262578959, now seen corresponding path program 3 times [2022-11-18 19:54:00,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:00,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580195046] [2022-11-18 19:54:00,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:00,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:01,123 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:54:01,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [934471177] [2022-11-18 19:54:01,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:54:01,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:01,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:01,125 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:01,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:54:02,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 19:54:02,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:02,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:54:02,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:02,252 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 1301 proven. 2 refuted. 0 times theorem prover too weak. 17866 trivial. 0 not checked. [2022-11-18 19:54:02,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:02,535 INFO L134 CoverageAnalysis]: Checked inductivity of 19169 backedges. 1301 proven. 2 refuted. 0 times theorem prover too weak. 17866 trivial. 0 not checked. [2022-11-18 19:54:02,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:02,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580195046] [2022-11-18 19:54:02,536 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:54:02,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934471177] [2022-11-18 19:54:02,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934471177] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:02,537 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:54:02,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-18 19:54:02,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128922683] [2022-11-18 19:54:02,537 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:02,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:54:02,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:02,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:54:02,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:54:02,541 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 259 [2022-11-18 19:54:02,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 338 transitions, 1664 flow. Second operand has 10 states, 10 states have (on average 228.1) internal successors, (2281), 10 states have internal predecessors, (2281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:02,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:02,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 259 [2022-11-18 19:54:02,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:04,523 INFO L130 PetriNetUnfolder]: 8/2706 cut-off events. [2022-11-18 19:54:04,524 INFO L131 PetriNetUnfolder]: For 3181/3181 co-relation queries the response was YES. [2022-11-18 19:54:04,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4739 conditions, 2706 events. 8/2706 cut-off events. For 3181/3181 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 648 event pairs, 0 based on Foata normal form. 29/2720 useless extension candidates. Maximal degree in co-relation 2481. Up to 310 conditions per place. [2022-11-18 19:54:04,534 INFO L137 encePairwiseOnDemand]: 250/259 looper letters, 39 selfloop transitions, 103 changer transitions 0/361 dead transitions. [2022-11-18 19:54:04,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 361 transitions, 2004 flow [2022-11-18 19:54:04,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:54:04,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 19:54:04,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2954 transitions. [2022-11-18 19:54:04,540 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8773388773388774 [2022-11-18 19:54:04,541 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2954 transitions. [2022-11-18 19:54:04,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2954 transitions. [2022-11-18 19:54:04,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:04,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2954 transitions. [2022-11-18 19:54:04,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 227.23076923076923) internal successors, (2954), 13 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:04,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 259.0) internal successors, (3626), 14 states have internal predecessors, (3626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:04,555 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 259.0) internal successors, (3626), 14 states have internal predecessors, (3626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:04,555 INFO L175 Difference]: Start difference. First operand has 422 places, 338 transitions, 1664 flow. Second operand 13 states and 2954 transitions. [2022-11-18 19:54:04,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 361 transitions, 2004 flow [2022-11-18 19:54:04,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 361 transitions, 1883 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-18 19:54:04,588 INFO L231 Difference]: Finished difference. Result has 393 places, 340 transitions, 1800 flow [2022-11-18 19:54:04,589 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1800, PETRI_PLACES=393, PETRI_TRANSITIONS=340} [2022-11-18 19:54:04,590 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 146 predicate places. [2022-11-18 19:54:04,590 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 340 transitions, 1800 flow [2022-11-18 19:54:04,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 228.1) internal successors, (2281), 10 states have internal predecessors, (2281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:04,591 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:04,591 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:04,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:04,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:04,800 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 19:54:04,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:04,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1034934093, now seen corresponding path program 1 times [2022-11-18 19:54:04,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:04,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599410045] [2022-11-18 19:54:04,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:04,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:05,041 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:54:05,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [214414885] [2022-11-18 19:54:05,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:05,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:05,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:05,043 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:05,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 19:54:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:06,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 5239 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:54:06,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:08,712 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-18 19:54:08,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:10,692 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-18 19:54:10,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:10,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599410045] [2022-11-18 19:54:10,693 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:54:10,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214414885] [2022-11-18 19:54:10,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214414885] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:10,693 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:54:10,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 19:54:10,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60461469] [2022-11-18 19:54:10,694 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:10,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:54:10,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:10,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:54:10,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:54:10,698 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 259 [2022-11-18 19:54:10,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 340 transitions, 1800 flow. Second operand has 8 states, 8 states have (on average 231.75) internal successors, (1854), 8 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:10,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:10,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 259 [2022-11-18 19:54:10,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:13,430 INFO L130 PetriNetUnfolder]: 9/3983 cut-off events. [2022-11-18 19:54:13,430 INFO L131 PetriNetUnfolder]: For 5415/5415 co-relation queries the response was YES. [2022-11-18 19:54:13,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6803 conditions, 3983 events. 9/3983 cut-off events. For 5415/5415 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 406 event pairs, 0 based on Foata normal form. 3/3971 useless extension candidates. Maximal degree in co-relation 4626. Up to 158 conditions per place. [2022-11-18 19:54:13,440 INFO L137 encePairwiseOnDemand]: 252/259 looper letters, 36 selfloop transitions, 9 changer transitions 0/362 dead transitions. [2022-11-18 19:54:13,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 362 transitions, 1954 flow [2022-11-18 19:54:13,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:54:13,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:54:13,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2100 transitions. [2022-11-18 19:54:13,444 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9009009009009009 [2022-11-18 19:54:13,444 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2100 transitions. [2022-11-18 19:54:13,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2100 transitions. [2022-11-18 19:54:13,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:13,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2100 transitions. [2022-11-18 19:54:13,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 233.33333333333334) internal successors, (2100), 9 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:13,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 259.0) internal successors, (2590), 10 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:13,451 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 259.0) internal successors, (2590), 10 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:13,451 INFO L175 Difference]: Start difference. First operand has 393 places, 340 transitions, 1800 flow. Second operand 9 states and 2100 transitions. [2022-11-18 19:54:13,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 362 transitions, 1954 flow [2022-11-18 19:54:13,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 362 transitions, 1883 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 19:54:13,487 INFO L231 Difference]: Finished difference. Result has 400 places, 344 transitions, 1792 flow [2022-11-18 19:54:13,487 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=1729, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1792, PETRI_PLACES=400, PETRI_TRANSITIONS=344} [2022-11-18 19:54:13,488 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 153 predicate places. [2022-11-18 19:54:13,488 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 344 transitions, 1792 flow [2022-11-18 19:54:13,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 231.75) internal successors, (1854), 8 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:13,489 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:13,489 INFO L209 CegarLoopForPetriNet]: trace histogram [32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:13,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:13,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:13,702 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 19:54:13,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:13,703 INFO L85 PathProgramCache]: Analyzing trace with hash 449987226, now seen corresponding path program 1 times [2022-11-18 19:54:13,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:13,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642673807] [2022-11-18 19:54:13,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:13,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:13,905 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:54:13,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [680811466] [2022-11-18 19:54:13,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:13,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:13,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:13,907 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:13,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 19:54:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:23,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 5332 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:54:23,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:25,333 INFO L134 CoverageAnalysis]: Checked inductivity of 19200 backedges. 1335 proven. 0 refuted. 0 times theorem prover too weak. 17865 trivial. 0 not checked. [2022-11-18 19:54:25,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:54:25,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:25,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642673807] [2022-11-18 19:54:25,334 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:54:25,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680811466] [2022-11-18 19:54:25,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680811466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:25,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:25,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:54:25,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554589443] [2022-11-18 19:54:25,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:25,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:54:25,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:25,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:54:25,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:54:25,340 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 259 [2022-11-18 19:54:25,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 344 transitions, 1792 flow. Second operand has 9 states, 9 states have (on average 222.33333333333334) internal successors, (2001), 9 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:25,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:25,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 259 [2022-11-18 19:54:25,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:28,593 INFO L130 PetriNetUnfolder]: 9/3925 cut-off events. [2022-11-18 19:54:28,593 INFO L131 PetriNetUnfolder]: For 5807/5807 co-relation queries the response was YES. [2022-11-18 19:54:28,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7045 conditions, 3925 events. 9/3925 cut-off events. For 5807/5807 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 291 event pairs, 0 based on Foata normal form. 58/3968 useless extension candidates. Maximal degree in co-relation 4709. Up to 354 conditions per place. [2022-11-18 19:54:28,603 INFO L137 encePairwiseOnDemand]: 249/259 looper letters, 169 selfloop transitions, 74 changer transitions 0/457 dead transitions. [2022-11-18 19:54:28,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 457 transitions, 3476 flow [2022-11-18 19:54:28,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:54:28,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 19:54:28,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2671 transitions. [2022-11-18 19:54:28,606 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8593951093951094 [2022-11-18 19:54:28,606 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2671 transitions. [2022-11-18 19:54:28,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2671 transitions. [2022-11-18 19:54:28,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:28,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2671 transitions. [2022-11-18 19:54:28,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 222.58333333333334) internal successors, (2671), 12 states have internal predecessors, (2671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:28,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 259.0) internal successors, (3367), 13 states have internal predecessors, (3367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:28,615 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 259.0) internal successors, (3367), 13 states have internal predecessors, (3367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:28,615 INFO L175 Difference]: Start difference. First operand has 400 places, 344 transitions, 1792 flow. Second operand 12 states and 2671 transitions. [2022-11-18 19:54:28,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 457 transitions, 3476 flow [2022-11-18 19:54:28,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 457 transitions, 3462 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-18 19:54:28,651 INFO L231 Difference]: Finished difference. Result has 410 places, 403 transitions, 2755 flow [2022-11-18 19:54:28,652 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=1772, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2755, PETRI_PLACES=410, PETRI_TRANSITIONS=403} [2022-11-18 19:54:28,652 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 163 predicate places. [2022-11-18 19:54:28,652 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 403 transitions, 2755 flow [2022-11-18 19:54:28,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 222.33333333333334) internal successors, (2001), 9 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:28,653 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:28,654 INFO L209 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:28,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:28,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:28,878 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 19:54:28,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:28,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1664200277, now seen corresponding path program 1 times [2022-11-18 19:54:28,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:28,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607419495] [2022-11-18 19:54:28,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:28,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:29,603 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:54:29,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [494651302] [2022-11-18 19:54:29,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:29,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:29,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:29,605 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:29,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 19:54:33,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:33,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 15236 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:54:33,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:40,122 INFO L134 CoverageAnalysis]: Checked inductivity of 164517 backedges. 0 proven. 110922 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-18 19:54:40,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:47,151 INFO L134 CoverageAnalysis]: Checked inductivity of 164517 backedges. 0 proven. 110922 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-18 19:54:47,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:54:47,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607419495] [2022-11-18 19:54:47,152 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:54:47,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494651302] [2022-11-18 19:54:47,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494651302] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:54:47,152 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:54:47,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 19:54:47,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829690647] [2022-11-18 19:54:47,154 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:47,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:54:47,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:54:47,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:54:47,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:54:47,160 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 259 [2022-11-18 19:54:47,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 403 transitions, 2755 flow. Second operand has 14 states, 14 states have (on average 232.92857142857142) internal successors, (3261), 14 states have internal predecessors, (3261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:47,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:54:47,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 259 [2022-11-18 19:54:47,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:54:52,601 INFO L130 PetriNetUnfolder]: 15/5334 cut-off events. [2022-11-18 19:54:52,601 INFO L131 PetriNetUnfolder]: For 8853/8853 co-relation queries the response was YES. [2022-11-18 19:54:52,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9187 conditions, 5334 events. 15/5334 cut-off events. For 8853/8853 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 872 event pairs, 0 based on Foata normal form. 2/5306 useless extension candidates. Maximal degree in co-relation 6974. Up to 192 conditions per place. [2022-11-18 19:54:52,616 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 43 selfloop transitions, 14 changer transitions 0/434 dead transitions. [2022-11-18 19:54:52,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 434 transitions, 2976 flow [2022-11-18 19:54:52,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:54:52,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 19:54:52,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3479 transitions. [2022-11-18 19:54:52,621 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8954954954954955 [2022-11-18 19:54:52,621 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3479 transitions. [2022-11-18 19:54:52,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3479 transitions. [2022-11-18 19:54:52,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:54:52,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3479 transitions. [2022-11-18 19:54:52,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 231.93333333333334) internal successors, (3479), 15 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:52,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 259.0) internal successors, (4144), 16 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:52,632 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 259.0) internal successors, (4144), 16 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:52,633 INFO L175 Difference]: Start difference. First operand has 410 places, 403 transitions, 2755 flow. Second operand 15 states and 3479 transitions. [2022-11-18 19:54:52,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 434 transitions, 2976 flow [2022-11-18 19:54:52,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 434 transitions, 2937 flow, removed 2 selfloop flow, removed 10 redundant places. [2022-11-18 19:54:52,681 INFO L231 Difference]: Finished difference. Result has 414 places, 406 transitions, 2784 flow [2022-11-18 19:54:52,682 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=2719, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2784, PETRI_PLACES=414, PETRI_TRANSITIONS=406} [2022-11-18 19:54:52,683 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 167 predicate places. [2022-11-18 19:54:52,683 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 406 transitions, 2784 flow [2022-11-18 19:54:52,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 232.92857142857142) internal successors, (3261), 14 states have internal predecessors, (3261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:54:52,684 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:54:52,685 INFO L209 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:52,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:52,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 19:54:52,910 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 19:54:52,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:52,911 INFO L85 PathProgramCache]: Analyzing trace with hash 2122701357, now seen corresponding path program 2 times [2022-11-18 19:54:52,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:54:52,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763307241] [2022-11-18 19:54:52,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:52,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:54:53,450 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:54:53,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [845452911] [2022-11-18 19:54:53,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:54:53,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:54:53,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:54:53,452 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:54:53,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 19:54:58,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:54:58,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:58,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 15359 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:54:58,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:55:04,607 INFO L134 CoverageAnalysis]: Checked inductivity of 164526 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-18 19:55:04,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:55:10,698 INFO L134 CoverageAnalysis]: Checked inductivity of 164526 backedges. 0 proven. 110931 refuted. 0 times theorem prover too weak. 53595 trivial. 0 not checked. [2022-11-18 19:55:10,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:10,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763307241] [2022-11-18 19:55:10,698 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:55:10,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845452911] [2022-11-18 19:55:10,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845452911] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:55:10,699 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:55:10,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-18 19:55:10,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983586686] [2022-11-18 19:55:10,701 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:55:10,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:55:10,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:10,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:55:10,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:55:10,709 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 259 [2022-11-18 19:55:10,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 406 transitions, 2784 flow. Second operand has 16 states, 16 states have (on average 232.875) internal successors, (3726), 16 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:10,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:55:10,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 259 [2022-11-18 19:55:10,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:55:23,352 INFO L130 PetriNetUnfolder]: 13/8912 cut-off events. [2022-11-18 19:55:23,352 INFO L131 PetriNetUnfolder]: For 15656/15656 co-relation queries the response was YES. [2022-11-18 19:55:23,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15623 conditions, 8912 events. 13/8912 cut-off events. For 15656/15656 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 294 event pairs, 0 based on Foata normal form. 4/8901 useless extension candidates. Maximal degree in co-relation 13243. Up to 336 conditions per place. [2022-11-18 19:55:23,369 INFO L137 encePairwiseOnDemand]: 253/259 looper letters, 69 selfloop transitions, 21 changer transitions 0/467 dead transitions. [2022-11-18 19:55:23,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 467 transitions, 3196 flow [2022-11-18 19:55:23,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 19:55:23,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 19:55:23,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4882 transitions. [2022-11-18 19:55:23,375 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8975914690200405 [2022-11-18 19:55:23,376 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4882 transitions. [2022-11-18 19:55:23,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4882 transitions. [2022-11-18 19:55:23,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:55:23,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4882 transitions. [2022-11-18 19:55:23,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 232.47619047619048) internal successors, (4882), 21 states have internal predecessors, (4882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:23,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 259.0) internal successors, (5698), 22 states have internal predecessors, (5698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:23,389 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 259.0) internal successors, (5698), 22 states have internal predecessors, (5698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:23,389 INFO L175 Difference]: Start difference. First operand has 414 places, 406 transitions, 2784 flow. Second operand 21 states and 4882 transitions. [2022-11-18 19:55:23,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 467 transitions, 3196 flow [2022-11-18 19:55:23,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 467 transitions, 3112 flow, removed 15 selfloop flow, removed 12 redundant places. [2022-11-18 19:55:23,447 INFO L231 Difference]: Finished difference. Result has 427 places, 416 transitions, 2875 flow [2022-11-18 19:55:23,448 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=2736, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2875, PETRI_PLACES=427, PETRI_TRANSITIONS=416} [2022-11-18 19:55:23,448 INFO L288 CegarLoopForPetriNet]: 247 programPoint places, 180 predicate places. [2022-11-18 19:55:23,448 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 416 transitions, 2875 flow [2022-11-18 19:55:23,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 232.875) internal successors, (3726), 16 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:23,449 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:55:23,451 INFO L209 CegarLoopForPetriNet]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:23,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 19:55:23,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 19:55:23,678 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 19:55:23,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:23,680 INFO L85 PathProgramCache]: Analyzing trace with hash -984338451, now seen corresponding path program 3 times [2022-11-18 19:55:23,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:23,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974490180] [2022-11-18 19:55:23,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:23,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:24,844 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:55:24,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [127989451] [2022-11-18 19:55:24,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:55:24,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:24,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:55:24,854 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:55:24,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_017b109b-ee33-44b5-bb2c-da6ce2e55ecf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process