./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 15:44:17,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:44:17,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:44:17,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:44:17,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:44:17,496 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:44:17,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:44:17,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:44:17,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:44:17,511 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:44:17,513 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:44:17,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:44:17,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:44:17,519 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:44:17,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:44:17,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:44:17,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:44:17,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:44:17,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:44:17,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:44:17,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:44:17,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:44:17,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:44:17,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:44:17,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:44:17,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:44:17,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:44:17,544 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:44:17,544 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:44:17,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:44:17,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:44:17,547 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:44:17,548 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:44:17,549 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:44:17,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:44:17,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:44:17,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:44:17,553 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:44:17,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:44:17,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:44:17,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:44:17,556 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 15:44:17,580 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:44:17,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:44:17,581 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:44:17,581 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:44:17,582 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:44:17,582 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:44:17,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:44:17,584 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:44:17,585 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:44:17,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:44:17,585 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:44:17,586 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 15:44:17,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:44:17,586 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:44:17,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:44:17,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 15:44:17,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:44:17,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 15:44:17,588 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 15:44:17,588 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:44:17,589 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:44:17,589 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:44:17,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 15:44:17,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:44:17,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:44:17,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:44:17,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:44:17,591 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:44:17,592 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:44:17,592 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 15:44:17,592 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:44:17,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:44:17,593 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:44:17,593 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 15:44:17,594 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:44:17,594 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:44:17,594 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba [2022-11-25 15:44:17,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:44:17,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:44:18,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:44:18,003 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:44:18,004 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:44:18,005 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2022-11-25 15:44:21,733 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:44:22,068 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:44:22,069 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2022-11-25 15:44:22,106 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/data/9f7f6835c/67ecfde701534d0593ae056abab22ce2/FLAG5120f3002 [2022-11-25 15:44:22,126 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/data/9f7f6835c/67ecfde701534d0593ae056abab22ce2 [2022-11-25 15:44:22,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:44:22,131 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:44:22,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:44:22,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:44:22,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:44:22,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:44:22" (1/1) ... [2022-11-25 15:44:22,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1da655ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:44:22, skipping insertion in model container [2022-11-25 15:44:22,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:44:22" (1/1) ... [2022-11-25 15:44:22,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:44:22,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:44:22,769 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i[41323,41336] [2022-11-25 15:44:22,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:44:22,854 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:44:22,932 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i[41323,41336] [2022-11-25 15:44:22,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:44:23,075 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:44:23,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:44:23 WrapperNode [2022-11-25 15:44:23,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:44:23,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:44:23,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:44:23,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:44:23,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:44:23" (1/1) ... [2022-11-25 15:44:23,138 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:44:23" (1/1) ... [2022-11-25 15:44:23,202 INFO L138 Inliner]: procedures = 271, calls = 31, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 211 [2022-11-25 15:44:23,202 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:44:23,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:44:23,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:44:23,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:44:23,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:44:23" (1/1) ... [2022-11-25 15:44:23,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:44:23" (1/1) ... [2022-11-25 15:44:23,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:44:23" (1/1) ... [2022-11-25 15:44:23,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:44:23" (1/1) ... [2022-11-25 15:44:23,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:44:23" (1/1) ... [2022-11-25 15:44:23,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:44:23" (1/1) ... [2022-11-25 15:44:23,256 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:44:23" (1/1) ... [2022-11-25 15:44:23,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:44:23" (1/1) ... [2022-11-25 15:44:23,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:44:23,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:44:23,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:44:23,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:44:23,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:44:23" (1/1) ... [2022-11-25 15:44:23,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:44:23,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:44:23,308 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:44:23,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:44:23,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 15:44:23,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 15:44:23,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 15:44:23,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 15:44:23,364 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 15:44:23,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:44:23,366 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-25 15:44:23,366 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-25 15:44:23,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:44:23,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:44:23,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:44:23,369 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 15:44:23,632 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:44:23,635 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:44:24,203 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:44:24,214 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:44:24,214 INFO L300 CfgBuilder]: Removed 25 assume(true) statements. [2022-11-25 15:44:24,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:44:24 BoogieIcfgContainer [2022-11-25 15:44:24,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:44:24,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:44:24,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:44:24,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:44:24,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:44:22" (1/3) ... [2022-11-25 15:44:24,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e46a170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:44:24, skipping insertion in model container [2022-11-25 15:44:24,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:44:23" (2/3) ... [2022-11-25 15:44:24,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e46a170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:44:24, skipping insertion in model container [2022-11-25 15:44:24,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:44:24" (3/3) ... [2022-11-25 15:44:24,234 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_70-funloop_racefree.i [2022-11-25 15:44:24,263 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 15:44:24,291 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:44:24,302 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-25 15:44:24,302 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 15:44:24,448 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-25 15:44:24,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 234 transitions, 476 flow [2022-11-25 15:44:24,642 INFO L130 PetriNetUnfolder]: 49/329 cut-off events. [2022-11-25 15:44:24,643 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 15:44:24,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 329 events. 49/329 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1296 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 186. Up to 8 conditions per place. [2022-11-25 15:44:24,656 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 234 transitions, 476 flow [2022-11-25 15:44:24,667 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 231 transitions, 470 flow [2022-11-25 15:44:24,672 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 15:44:24,692 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 202 places, 231 transitions, 470 flow [2022-11-25 15:44:24,696 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 202 places, 231 transitions, 470 flow [2022-11-25 15:44:24,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 231 transitions, 470 flow [2022-11-25 15:44:24,789 INFO L130 PetriNetUnfolder]: 48/326 cut-off events. [2022-11-25 15:44:24,790 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 15:44:24,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 326 events. 48/326 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1282 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 186. Up to 8 conditions per place. [2022-11-25 15:44:24,806 INFO L119 LiptonReduction]: Number of co-enabled transitions 17220 [2022-11-25 15:44:30,605 INFO L134 LiptonReduction]: Checked pairs total: 27318 [2022-11-25 15:44:30,605 INFO L136 LiptonReduction]: Total number of compositions: 215 [2022-11-25 15:44:30,627 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:44:30,635 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;@130294a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:44:30,635 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-25 15:44:30,638 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 15:44:30,639 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:44:30,639 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:44:30,640 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 15:44:30,640 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 15:44:30,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:44:30,647 INFO L85 PathProgramCache]: Analyzing trace with hash 29715, now seen corresponding path program 1 times [2022-11-25 15:44:30,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:44:30,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53629437] [2022-11-25 15:44:30,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:44:30,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:44:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:44:30,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:44:30,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:44:30,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53629437] [2022-11-25 15:44:30,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53629437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:44:30,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:44:30,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:44:30,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007827196] [2022-11-25 15:44:30,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:44:30,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:44:30,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:44:30,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:44:30,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:44:31,029 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 449 [2022-11-25 15:44:31,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 88 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:31,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:44:31,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 449 [2022-11-25 15:44:31,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:44:31,484 INFO L130 PetriNetUnfolder]: 670/1359 cut-off events. [2022-11-25 15:44:31,485 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 15:44:31,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2641 conditions, 1359 events. 670/1359 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 7255 event pairs, 572 based on Foata normal form. 129/1022 useless extension candidates. Maximal degree in co-relation 2564. Up to 1275 conditions per place. [2022-11-25 15:44:31,501 INFO L137 encePairwiseOnDemand]: 422/449 looper letters, 57 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2022-11-25 15:44:31,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 66 transitions, 258 flow [2022-11-25 15:44:31,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:44:31,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:44:31,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2022-11-25 15:44:31,530 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5063103192279139 [2022-11-25 15:44:31,531 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2022-11-25 15:44:31,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2022-11-25 15:44:31,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:44:31,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2022-11-25 15:44:31,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:31,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:31,561 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:31,568 INFO L175 Difference]: Start difference. First operand has 65 places, 88 transitions, 184 flow. Second operand 3 states and 682 transitions. [2022-11-25 15:44:31,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 66 transitions, 258 flow [2022-11-25 15:44:31,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 66 transitions, 258 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 15:44:31,577 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 152 flow [2022-11-25 15:44:31,580 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2022-11-25 15:44:31,585 INFO L288 CegarLoopForPetriNet]: 65 programPoint places, 1 predicate places. [2022-11-25 15:44:31,586 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 152 flow [2022-11-25 15:44:31,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:31,587 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:44:31,588 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 15:44:31,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:44:31,589 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 15:44:31,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:44:31,593 INFO L85 PathProgramCache]: Analyzing trace with hash 924065, now seen corresponding path program 1 times [2022-11-25 15:44:31,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:44:31,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744408589] [2022-11-25 15:44:31,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:44:31,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:44:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:44:31,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:44:31,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:44:31,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744408589] [2022-11-25 15:44:31,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744408589] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:44:31,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301556086] [2022-11-25 15:44:31,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:44:31,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:44:31,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:44:31,739 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:44:31,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 15:44:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:44:31,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:44:31,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:44:31,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:44:31,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:44:31,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301556086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:44:31,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:44:31,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-25 15:44:31,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575933317] [2022-11-25 15:44:31,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:44:31,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:44:31,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:44:31,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:44:31,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:44:31,991 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 449 [2022-11-25 15:44:31,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 199.75) internal successors, (799), 4 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:31,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:44:31,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 449 [2022-11-25 15:44:31,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:44:32,353 INFO L130 PetriNetUnfolder]: 670/1358 cut-off events. [2022-11-25 15:44:32,353 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 15:44:32,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2646 conditions, 1358 events. 670/1358 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 7243 event pairs, 572 based on Foata normal form. 0/893 useless extension candidates. Maximal degree in co-relation 2634. Up to 1273 conditions per place. [2022-11-25 15:44:32,363 INFO L137 encePairwiseOnDemand]: 446/449 looper letters, 56 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2022-11-25 15:44:32,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 65 transitions, 264 flow [2022-11-25 15:44:32,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:44:32,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 15:44:32,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 855 transitions. [2022-11-25 15:44:32,368 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4760579064587973 [2022-11-25 15:44:32,368 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 855 transitions. [2022-11-25 15:44:32,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 855 transitions. [2022-11-25 15:44:32,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:44:32,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 855 transitions. [2022-11-25 15:44:32,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:32,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 449.0) internal successors, (2245), 5 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:32,380 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 449.0) internal successors, (2245), 5 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:32,380 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 152 flow. Second operand 4 states and 855 transitions. [2022-11-25 15:44:32,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 65 transitions, 264 flow [2022-11-25 15:44:32,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 65 transitions, 260 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 15:44:32,383 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 148 flow [2022-11-25 15:44:32,384 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2022-11-25 15:44:32,385 INFO L288 CegarLoopForPetriNet]: 65 programPoint places, 2 predicate places. [2022-11-25 15:44:32,385 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 148 flow [2022-11-25 15:44:32,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 199.75) internal successors, (799), 4 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:32,386 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:44:32,387 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 15:44:32,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 15:44:32,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:44:32,594 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 15:44:32,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:44:32,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1760672470, now seen corresponding path program 1 times [2022-11-25 15:44:32,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:44:32,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016522217] [2022-11-25 15:44:32,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:44:32,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:44:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:44:32,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:44:32,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:44:32,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016522217] [2022-11-25 15:44:32,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016522217] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:44:32,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600250593] [2022-11-25 15:44:32,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:44:32,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:44:32,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:44:32,759 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:44:32,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 15:44:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:44:32,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 15:44:32,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:44:32,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:44:32,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:44:32,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:44:32,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600250593] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:44:32,913 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:44:32,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-25 15:44:32,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087418820] [2022-11-25 15:44:32,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:44:32,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:44:32,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:44:32,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:44:32,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:44:32,965 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 449 [2022-11-25 15:44:32,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 148 flow. Second operand has 7 states, 7 states have (on average 199.57142857142858) internal successors, (1397), 7 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:32,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:44:32,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 449 [2022-11-25 15:44:32,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:44:33,346 INFO L130 PetriNetUnfolder]: 670/1361 cut-off events. [2022-11-25 15:44:33,346 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 15:44:33,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2655 conditions, 1361 events. 670/1361 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 7259 event pairs, 572 based on Foata normal form. 0/896 useless extension candidates. Maximal degree in co-relation 2643. Up to 1274 conditions per place. [2022-11-25 15:44:33,358 INFO L137 encePairwiseOnDemand]: 446/449 looper letters, 56 selfloop transitions, 5 changer transitions 0/68 dead transitions. [2022-11-25 15:44:33,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 68 transitions, 282 flow [2022-11-25 15:44:33,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:44:33,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 15:44:33,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1252 transitions. [2022-11-25 15:44:33,369 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4647364513734224 [2022-11-25 15:44:33,369 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1252 transitions. [2022-11-25 15:44:33,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1252 transitions. [2022-11-25 15:44:33,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:44:33,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1252 transitions. [2022-11-25 15:44:33,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 208.66666666666666) internal successors, (1252), 6 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:33,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 449.0) internal successors, (3143), 7 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:33,388 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 449.0) internal successors, (3143), 7 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:33,388 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 148 flow. Second operand 6 states and 1252 transitions. [2022-11-25 15:44:33,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 68 transitions, 282 flow [2022-11-25 15:44:33,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 68 transitions, 279 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:44:33,392 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 181 flow [2022-11-25 15:44:33,392 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=181, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2022-11-25 15:44:33,394 INFO L288 CegarLoopForPetriNet]: 65 programPoint places, 8 predicate places. [2022-11-25 15:44:33,395 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 181 flow [2022-11-25 15:44:33,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 199.57142857142858) internal successors, (1397), 7 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:33,397 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:44:33,397 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2022-11-25 15:44:33,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 15:44:33,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:44:33,603 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 15:44:33,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:44:33,604 INFO L85 PathProgramCache]: Analyzing trace with hash -139833436, now seen corresponding path program 2 times [2022-11-25 15:44:33,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:44:33,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49872414] [2022-11-25 15:44:33,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:44:33,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:44:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:44:33,691 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 15:44:33,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:44:33,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49872414] [2022-11-25 15:44:33,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49872414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:44:33,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:44:33,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:44:33,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582104777] [2022-11-25 15:44:33,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:44:33,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:44:33,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:44:33,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:44:33,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:44:33,711 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 449 [2022-11-25 15:44:33,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:33,713 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:44:33,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 449 [2022-11-25 15:44:33,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:44:34,001 INFO L130 PetriNetUnfolder]: 624/1237 cut-off events. [2022-11-25 15:44:34,001 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 15:44:34,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2435 conditions, 1237 events. 624/1237 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 6433 event pairs, 391 based on Foata normal form. 0/852 useless extension candidates. Maximal degree in co-relation 2419. Up to 1137 conditions per place. [2022-11-25 15:44:34,011 INFO L137 encePairwiseOnDemand]: 444/449 looper letters, 81 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2022-11-25 15:44:34,012 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 90 transitions, 391 flow [2022-11-25 15:44:34,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:44:34,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:44:34,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 679 transitions. [2022-11-25 15:44:34,016 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.504083147735709 [2022-11-25 15:44:34,016 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 679 transitions. [2022-11-25 15:44:34,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 679 transitions. [2022-11-25 15:44:34,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:44:34,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 679 transitions. [2022-11-25 15:44:34,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:34,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:34,025 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 449.0) internal successors, (1796), 4 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:34,026 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 181 flow. Second operand 3 states and 679 transitions. [2022-11-25 15:44:34,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 90 transitions, 391 flow [2022-11-25 15:44:34,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 90 transitions, 377 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-25 15:44:34,030 INFO L231 Difference]: Finished difference. Result has 73 places, 66 transitions, 171 flow [2022-11-25 15:44:34,031 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=73, PETRI_TRANSITIONS=66} [2022-11-25 15:44:34,032 INFO L288 CegarLoopForPetriNet]: 65 programPoint places, 8 predicate places. [2022-11-25 15:44:34,032 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 171 flow [2022-11-25 15:44:34,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:34,033 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:44:34,033 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2022-11-25 15:44:34,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 15:44:34,034 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 15:44:34,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:44:34,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1235899162, now seen corresponding path program 1 times [2022-11-25 15:44:34,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:44:34,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883786335] [2022-11-25 15:44:34,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:44:34,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:44:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:44:34,217 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 15:44:34,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:44:34,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883786335] [2022-11-25 15:44:34,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883786335] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:44:34,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727505052] [2022-11-25 15:44:34,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:44:34,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:44:34,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:44:34,220 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:44:34,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 15:44:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:44:34,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 15:44:34,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:44:34,387 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 15:44:34,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:44:34,495 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 15:44:34,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727505052] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:44:34,496 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:44:34,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-25 15:44:34,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243379643] [2022-11-25 15:44:34,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:44:34,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 15:44:34,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:44:34,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 15:44:34,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:44:34,555 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 449 [2022-11-25 15:44:34,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 171 flow. Second operand has 13 states, 13 states have (on average 199.30769230769232) internal successors, (2591), 13 states have internal predecessors, (2591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:34,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:44:34,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 449 [2022-11-25 15:44:34,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:44:34,861 INFO L130 PetriNetUnfolder]: 624/1250 cut-off events. [2022-11-25 15:44:34,862 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2022-11-25 15:44:34,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2526 conditions, 1250 events. 624/1250 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 6446 event pairs, 528 based on Foata normal form. 6/890 useless extension candidates. Maximal degree in co-relation 2509. Up to 1159 conditions per place. [2022-11-25 15:44:34,873 INFO L137 encePairwiseOnDemand]: 446/449 looper letters, 54 selfloop transitions, 11 changer transitions 0/72 dead transitions. [2022-11-25 15:44:34,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 72 transitions, 337 flow [2022-11-25 15:44:34,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 15:44:34,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 15:44:34,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2447 transitions. [2022-11-25 15:44:34,883 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45415738678544915 [2022-11-25 15:44:34,883 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2447 transitions. [2022-11-25 15:44:34,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2447 transitions. [2022-11-25 15:44:34,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:44:34,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2447 transitions. [2022-11-25 15:44:34,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 203.91666666666666) internal successors, (2447), 12 states have internal predecessors, (2447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:34,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 449.0) internal successors, (5837), 13 states have internal predecessors, (5837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:34,911 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 449.0) internal successors, (5837), 13 states have internal predecessors, (5837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:34,912 INFO L175 Difference]: Start difference. First operand has 73 places, 66 transitions, 171 flow. Second operand 12 states and 2447 transitions. [2022-11-25 15:44:34,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 72 transitions, 337 flow [2022-11-25 15:44:34,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 72 transitions, 333 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:44:34,921 INFO L231 Difference]: Finished difference. Result has 88 places, 72 transitions, 251 flow [2022-11-25 15:44:34,922 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=251, PETRI_PLACES=88, PETRI_TRANSITIONS=72} [2022-11-25 15:44:34,926 INFO L288 CegarLoopForPetriNet]: 65 programPoint places, 23 predicate places. [2022-11-25 15:44:34,926 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 72 transitions, 251 flow [2022-11-25 15:44:34,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 199.30769230769232) internal successors, (2591), 13 states have internal predecessors, (2591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:34,928 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:44:34,928 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2022-11-25 15:44:34,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 15:44:35,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:44:35,136 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 15:44:35,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:44:35,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1118449754, now seen corresponding path program 2 times [2022-11-25 15:44:35,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:44:35,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938366518] [2022-11-25 15:44:35,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:44:35,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:44:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:44:35,195 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:44:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:44:35,277 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:44:35,277 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 15:44:35,279 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-11-25 15:44:35,281 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2022-11-25 15:44:35,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2022-11-25 15:44:35,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2022-11-25 15:44:35,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2022-11-25 15:44:35,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2022-11-25 15:44:35,284 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2022-11-25 15:44:35,285 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2022-11-25 15:44:35,285 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2022-11-25 15:44:35,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2022-11-25 15:44:35,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2022-11-25 15:44:35,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2022-11-25 15:44:35,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2022-11-25 15:44:35,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2022-11-25 15:44:35,298 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2022-11-25 15:44:35,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2022-11-25 15:44:35,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2022-11-25 15:44:35,302 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2022-11-25 15:44:35,303 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2022-11-25 15:44:35,303 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2022-11-25 15:44:35,304 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2022-11-25 15:44:35,304 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2022-11-25 15:44:35,304 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2022-11-25 15:44:35,304 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2022-11-25 15:44:35,305 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2022-11-25 15:44:35,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 15:44:35,306 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2022-11-25 15:44:35,310 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 15:44:35,311 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 15:44:35,383 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 15:44:35,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 318 transitions, 654 flow [2022-11-25 15:44:35,500 INFO L130 PetriNetUnfolder]: 82/545 cut-off events. [2022-11-25 15:44:35,500 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 15:44:35,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 559 conditions, 545 events. 82/545 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2587 event pairs, 0 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 331. Up to 12 conditions per place. [2022-11-25 15:44:35,553 INFO L82 GeneralOperation]: Start removeDead. Operand has 275 places, 318 transitions, 654 flow [2022-11-25 15:44:35,561 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 275 places, 318 transitions, 654 flow [2022-11-25 15:44:35,561 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 15:44:35,562 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 275 places, 318 transitions, 654 flow [2022-11-25 15:44:35,562 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 275 places, 318 transitions, 654 flow [2022-11-25 15:44:35,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 318 transitions, 654 flow [2022-11-25 15:44:35,662 INFO L130 PetriNetUnfolder]: 82/545 cut-off events. [2022-11-25 15:44:35,663 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 15:44:35,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 559 conditions, 545 events. 82/545 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2587 event pairs, 0 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 331. Up to 12 conditions per place. [2022-11-25 15:44:35,708 INFO L119 LiptonReduction]: Number of co-enabled transitions 51004 [2022-11-25 15:44:42,651 INFO L134 LiptonReduction]: Checked pairs total: 81611 [2022-11-25 15:44:42,652 INFO L136 LiptonReduction]: Total number of compositions: 282 [2022-11-25 15:44:42,658 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:44:42,663 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;@130294a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:44:42,663 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-25 15:44:42,665 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2022-11-25 15:44:42,665 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:44:42,665 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:44:42,666 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 15:44:42,666 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-25 15:44:42,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:44:42,667 INFO L85 PathProgramCache]: Analyzing trace with hash 51599, now seen corresponding path program 1 times [2022-11-25 15:44:42,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:44:42,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462345519] [2022-11-25 15:44:42,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:44:42,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:44:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:44:42,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:44:42,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:44:42,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462345519] [2022-11-25 15:44:42,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462345519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:44:42,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:44:42,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:44:42,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779073958] [2022-11-25 15:44:42,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:44:42,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:44:42,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:44:42,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:44:42,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:44:42,722 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 600 [2022-11-25 15:44:42,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 132 transitions, 282 flow. Second operand has 3 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:42,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:44:42,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 600 [2022-11-25 15:44:42,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:44:49,397 INFO L130 PetriNetUnfolder]: 34559/52698 cut-off events. [2022-11-25 15:44:49,397 INFO L131 PetriNetUnfolder]: For 197/197 co-relation queries the response was YES. [2022-11-25 15:44:49,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103316 conditions, 52698 events. 34559/52698 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 1505. Compared 386159 event pairs, 30944 based on Foata normal form. 5410/40254 useless extension candidates. Maximal degree in co-relation 47167. Up to 50480 conditions per place. [2022-11-25 15:44:49,921 INFO L137 encePairwiseOnDemand]: 563/600 looper letters, 86 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2022-11-25 15:44:49,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 100 transitions, 394 flow [2022-11-25 15:44:49,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:44:49,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:44:49,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 928 transitions. [2022-11-25 15:44:49,926 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5155555555555555 [2022-11-25 15:44:49,926 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 928 transitions. [2022-11-25 15:44:49,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 928 transitions. [2022-11-25 15:44:49,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:44:49,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 928 transitions. [2022-11-25 15:44:49,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 309.3333333333333) internal successors, (928), 3 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:49,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 600.0) internal successors, (2400), 4 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:49,938 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 600.0) internal successors, (2400), 4 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:49,938 INFO L175 Difference]: Start difference. First operand has 96 places, 132 transitions, 282 flow. Second operand 3 states and 928 transitions. [2022-11-25 15:44:49,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 100 transitions, 394 flow [2022-11-25 15:44:49,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 100 transitions, 394 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 15:44:49,947 INFO L231 Difference]: Finished difference. Result has 98 places, 100 transitions, 230 flow [2022-11-25 15:44:49,948 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=600, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=98, PETRI_TRANSITIONS=100} [2022-11-25 15:44:49,950 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 2 predicate places. [2022-11-25 15:44:49,950 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 100 transitions, 230 flow [2022-11-25 15:44:49,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:49,951 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:44:49,951 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 15:44:49,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 15:44:49,952 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-25 15:44:49,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:44:49,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1602994, now seen corresponding path program 1 times [2022-11-25 15:44:49,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:44:49,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832278797] [2022-11-25 15:44:49,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:44:49,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:44:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:44:50,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:44:50,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:44:50,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832278797] [2022-11-25 15:44:50,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832278797] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:44:50,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047593856] [2022-11-25 15:44:50,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:44:50,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:44:50,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:44:50,031 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:44:50,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 15:44:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:44:50,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:44:50,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:44:50,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:44:50,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:44:50,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047593856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:44:50,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:44:50,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-25 15:44:50,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683326728] [2022-11-25 15:44:50,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:44:50,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:44:50,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:44:50,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:44:50,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:44:50,185 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 600 [2022-11-25 15:44:50,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 100 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 268.75) internal successors, (1075), 4 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:50,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:44:50,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 600 [2022-11-25 15:44:50,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:44:56,108 INFO L130 PetriNetUnfolder]: 34559/52697 cut-off events. [2022-11-25 15:44:56,108 INFO L131 PetriNetUnfolder]: For 197/197 co-relation queries the response was YES. [2022-11-25 15:44:56,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103321 conditions, 52697 events. 34559/52697 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 1505. Compared 386034 event pairs, 30944 based on Foata normal form. 0/34844 useless extension candidates. Maximal degree in co-relation 103308. Up to 50478 conditions per place. [2022-11-25 15:44:56,458 INFO L137 encePairwiseOnDemand]: 597/600 looper letters, 85 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2022-11-25 15:44:56,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 99 transitions, 400 flow [2022-11-25 15:44:56,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:44:56,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 15:44:56,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1160 transitions. [2022-11-25 15:44:56,463 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2022-11-25 15:44:56,464 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1160 transitions. [2022-11-25 15:44:56,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1160 transitions. [2022-11-25 15:44:56,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:44:56,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1160 transitions. [2022-11-25 15:44:56,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:56,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 600.0) internal successors, (3000), 5 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:56,475 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 600.0) internal successors, (3000), 5 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:56,475 INFO L175 Difference]: Start difference. First operand has 98 places, 100 transitions, 230 flow. Second operand 4 states and 1160 transitions. [2022-11-25 15:44:56,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 99 transitions, 400 flow [2022-11-25 15:44:56,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 99 transitions, 396 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 15:44:56,481 INFO L231 Difference]: Finished difference. Result has 99 places, 99 transitions, 226 flow [2022-11-25 15:44:56,481 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=600, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=99, PETRI_TRANSITIONS=99} [2022-11-25 15:44:56,483 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 3 predicate places. [2022-11-25 15:44:56,484 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 99 transitions, 226 flow [2022-11-25 15:44:56,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 268.75) internal successors, (1075), 4 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:56,485 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:44:56,485 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:44:56,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 15:44:56,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:44:56,691 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-25 15:44:56,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:44:56,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1303188370, now seen corresponding path program 1 times [2022-11-25 15:44:56,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:44:56,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442067172] [2022-11-25 15:44:56,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:44:56,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:44:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:44:56,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:44:56,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:44:56,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442067172] [2022-11-25 15:44:56,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442067172] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:44:56,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474132252] [2022-11-25 15:44:56,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:44:56,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:44:56,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:44:56,781 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:44:56,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 15:44:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:44:56,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 15:44:56,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:44:56,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:44:56,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:44:56,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:44:56,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474132252] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:44:56,928 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:44:56,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-25 15:44:56,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277265921] [2022-11-25 15:44:56,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:44:56,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:44:56,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:44:56,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:44:56,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:44:56,960 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 600 [2022-11-25 15:44:56,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 99 transitions, 226 flow. Second operand has 7 states, 7 states have (on average 268.57142857142856) internal successors, (1880), 7 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:44:56,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:44:56,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 600 [2022-11-25 15:44:56,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:45:01,511 INFO L130 PetriNetUnfolder]: 34559/52700 cut-off events. [2022-11-25 15:45:01,511 INFO L131 PetriNetUnfolder]: For 197/197 co-relation queries the response was YES. [2022-11-25 15:45:01,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103330 conditions, 52700 events. 34559/52700 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 1505. Compared 386109 event pairs, 30944 based on Foata normal form. 0/34847 useless extension candidates. Maximal degree in co-relation 103317. Up to 50479 conditions per place. [2022-11-25 15:45:02,139 INFO L137 encePairwiseOnDemand]: 597/600 looper letters, 85 selfloop transitions, 5 changer transitions 0/102 dead transitions. [2022-11-25 15:45:02,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 102 transitions, 418 flow [2022-11-25 15:45:02,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:45:02,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 15:45:02,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1695 transitions. [2022-11-25 15:45:02,146 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4708333333333333 [2022-11-25 15:45:02,146 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1695 transitions. [2022-11-25 15:45:02,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1695 transitions. [2022-11-25 15:45:02,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:45:02,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1695 transitions. [2022-11-25 15:45:02,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 282.5) internal successors, (1695), 6 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:02,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 600.0) internal successors, (4200), 7 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:02,161 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 600.0) internal successors, (4200), 7 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:02,161 INFO L175 Difference]: Start difference. First operand has 99 places, 99 transitions, 226 flow. Second operand 6 states and 1695 transitions. [2022-11-25 15:45:02,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 102 transitions, 418 flow [2022-11-25 15:45:02,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 102 transitions, 415 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:45:02,166 INFO L231 Difference]: Finished difference. Result has 105 places, 102 transitions, 259 flow [2022-11-25 15:45:02,167 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=600, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=259, PETRI_PLACES=105, PETRI_TRANSITIONS=102} [2022-11-25 15:45:02,169 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 9 predicate places. [2022-11-25 15:45:02,169 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 102 transitions, 259 flow [2022-11-25 15:45:02,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 268.57142857142856) internal successors, (1880), 7 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:02,171 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:45:02,171 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-11-25 15:45:02,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 15:45:02,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:45:02,379 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-25 15:45:02,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:45:02,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1443292533, now seen corresponding path program 2 times [2022-11-25 15:45:02,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:45:02,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745223592] [2022-11-25 15:45:02,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:45:02,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:45:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:02,468 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 15:45:02,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:45:02,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745223592] [2022-11-25 15:45:02,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745223592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:45:02,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:45:02,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:45:02,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249671931] [2022-11-25 15:45:02,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:45:02,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:45:02,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:45:02,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:45:02,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:45:02,483 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 600 [2022-11-25 15:45:02,484 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 102 transitions, 259 flow. Second operand has 3 states, 3 states have (on average 270.0) internal successors, (810), 3 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:02,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:45:02,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 600 [2022-11-25 15:45:02,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:45:06,952 INFO L130 PetriNetUnfolder]: 34033/51567 cut-off events. [2022-11-25 15:45:06,952 INFO L131 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2022-11-25 15:45:07,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101515 conditions, 51567 events. 34033/51567 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 1560. Compared 379718 event pairs, 14950 based on Foata normal form. 0/33858 useless extension candidates. Maximal degree in co-relation 101498. Up to 49729 conditions per place. [2022-11-25 15:45:07,251 INFO L137 encePairwiseOnDemand]: 595/600 looper letters, 113 selfloop transitions, 2 changer transitions 0/127 dead transitions. [2022-11-25 15:45:07,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 127 transitions, 539 flow [2022-11-25 15:45:07,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:45:07,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:45:07,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 918 transitions. [2022-11-25 15:45:07,255 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.51 [2022-11-25 15:45:07,256 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 918 transitions. [2022-11-25 15:45:07,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 918 transitions. [2022-11-25 15:45:07,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:45:07,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 918 transitions. [2022-11-25 15:45:07,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:07,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 600.0) internal successors, (2400), 4 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:07,265 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 600.0) internal successors, (2400), 4 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:07,265 INFO L175 Difference]: Start difference. First operand has 105 places, 102 transitions, 259 flow. Second operand 3 states and 918 transitions. [2022-11-25 15:45:07,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 127 transitions, 539 flow [2022-11-25 15:45:07,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 127 transitions, 525 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-25 15:45:07,269 INFO L231 Difference]: Finished difference. Result has 107 places, 103 transitions, 261 flow [2022-11-25 15:45:07,270 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=600, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=107, PETRI_TRANSITIONS=103} [2022-11-25 15:45:07,271 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 11 predicate places. [2022-11-25 15:45:07,271 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 103 transitions, 261 flow [2022-11-25 15:45:07,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 270.0) internal successors, (810), 3 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:07,272 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:45:07,272 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-25 15:45:07,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 15:45:07,272 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-25 15:45:07,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:45:07,273 INFO L85 PathProgramCache]: Analyzing trace with hash -2122097742, now seen corresponding path program 1 times [2022-11-25 15:45:07,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:45:07,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313083477] [2022-11-25 15:45:07,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:45:07,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:45:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:07,322 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 15:45:07,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:45:07,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313083477] [2022-11-25 15:45:07,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313083477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:45:07,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:45:07,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:45:07,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687967697] [2022-11-25 15:45:07,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:45:07,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:45:07,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:45:07,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:45:07,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:45:07,338 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 600 [2022-11-25 15:45:07,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 103 transitions, 261 flow. Second operand has 3 states, 3 states have (on average 271.0) internal successors, (813), 3 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:07,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:45:07,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 600 [2022-11-25 15:45:07,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:45:12,068 INFO L130 PetriNetUnfolder]: 33676/51082 cut-off events. [2022-11-25 15:45:12,069 INFO L131 PetriNetUnfolder]: For 1353/1353 co-relation queries the response was YES. [2022-11-25 15:45:12,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101701 conditions, 51082 events. 33676/51082 cut-off events. For 1353/1353 co-relation queries the response was YES. Maximal size of possible extension queue 1480. Compared 368891 event pairs, 29843 based on Foata normal form. 0/34831 useless extension candidates. Maximal degree in co-relation 101683. Up to 48730 conditions per place. [2022-11-25 15:45:12,367 INFO L137 encePairwiseOnDemand]: 598/600 looper letters, 89 selfloop transitions, 1 changer transitions 0/102 dead transitions. [2022-11-25 15:45:12,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 102 transitions, 437 flow [2022-11-25 15:45:12,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:45:12,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:45:12,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 890 transitions. [2022-11-25 15:45:12,371 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49444444444444446 [2022-11-25 15:45:12,371 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 890 transitions. [2022-11-25 15:45:12,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 890 transitions. [2022-11-25 15:45:12,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:45:12,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 890 transitions. [2022-11-25 15:45:12,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:12,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 600.0) internal successors, (2400), 4 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:12,380 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 600.0) internal successors, (2400), 4 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:12,381 INFO L175 Difference]: Start difference. First operand has 107 places, 103 transitions, 261 flow. Second operand 3 states and 890 transitions. [2022-11-25 15:45:12,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 102 transitions, 437 flow [2022-11-25 15:45:12,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 102 transitions, 435 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:45:12,388 INFO L231 Difference]: Finished difference. Result has 107 places, 102 transitions, 257 flow [2022-11-25 15:45:12,389 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=600, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=257, PETRI_PLACES=107, PETRI_TRANSITIONS=102} [2022-11-25 15:45:12,389 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 11 predicate places. [2022-11-25 15:45:12,390 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 102 transitions, 257 flow [2022-11-25 15:45:12,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 271.0) internal successors, (813), 3 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:12,390 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:45:12,391 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-25 15:45:12,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 15:45:12,391 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-25 15:45:12,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:45:12,392 INFO L85 PathProgramCache]: Analyzing trace with hash -2122097744, now seen corresponding path program 1 times [2022-11-25 15:45:12,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:45:12,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22928858] [2022-11-25 15:45:12,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:45:12,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:45:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:12,451 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 15:45:12,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:45:12,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22928858] [2022-11-25 15:45:12,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22928858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:45:12,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:45:12,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:45:12,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156788664] [2022-11-25 15:45:12,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:45:12,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:45:12,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:45:12,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:45:12,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:45:12,465 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 600 [2022-11-25 15:45:12,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 102 transitions, 257 flow. Second operand has 3 states, 3 states have (on average 270.0) internal successors, (810), 3 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:12,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:45:12,467 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 600 [2022-11-25 15:45:12,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:45:16,804 INFO L130 PetriNetUnfolder]: 31862/48912 cut-off events. [2022-11-25 15:45:16,804 INFO L131 PetriNetUnfolder]: For 714/714 co-relation queries the response was YES. [2022-11-25 15:45:16,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97203 conditions, 48912 events. 31862/48912 cut-off events. For 714/714 co-relation queries the response was YES. Maximal size of possible extension queue 1432. Compared 375552 event pairs, 1607 based on Foata normal form. 0/33740 useless extension candidates. Maximal degree in co-relation 97185. Up to 44088 conditions per place. [2022-11-25 15:45:17,066 INFO L137 encePairwiseOnDemand]: 596/600 looper letters, 133 selfloop transitions, 4 changer transitions 0/149 dead transitions. [2022-11-25 15:45:17,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 149 transitions, 623 flow [2022-11-25 15:45:17,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:45:17,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:45:17,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 934 transitions. [2022-11-25 15:45:17,070 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5188888888888888 [2022-11-25 15:45:17,071 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 934 transitions. [2022-11-25 15:45:17,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 934 transitions. [2022-11-25 15:45:17,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:45:17,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 934 transitions. [2022-11-25 15:45:17,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:17,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 600.0) internal successors, (2400), 4 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:17,079 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 600.0) internal successors, (2400), 4 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:17,079 INFO L175 Difference]: Start difference. First operand has 107 places, 102 transitions, 257 flow. Second operand 3 states and 934 transitions. [2022-11-25 15:45:17,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 149 transitions, 623 flow [2022-11-25 15:45:17,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 149 transitions, 622 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:45:17,085 INFO L231 Difference]: Finished difference. Result has 108 places, 102 transitions, 268 flow [2022-11-25 15:45:17,086 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=600, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=108, PETRI_TRANSITIONS=102} [2022-11-25 15:45:17,086 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 12 predicate places. [2022-11-25 15:45:17,086 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 102 transitions, 268 flow [2022-11-25 15:45:17,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 270.0) internal successors, (810), 3 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:17,087 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:45:17,087 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:45:17,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 15:45:17,088 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-25 15:45:17,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:45:17,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1185739317, now seen corresponding path program 1 times [2022-11-25 15:45:17,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:45:17,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100650515] [2022-11-25 15:45:17,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:45:17,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:45:17,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:17,202 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:45:17,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:45:17,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100650515] [2022-11-25 15:45:17,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100650515] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:45:17,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007030012] [2022-11-25 15:45:17,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:45:17,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:45:17,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:45:17,205 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:45:17,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 15:45:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:17,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 15:45:17,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:45:17,354 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:45:17,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:45:17,425 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:45:17,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007030012] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:45:17,426 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:45:17,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-25 15:45:17,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875023209] [2022-11-25 15:45:17,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:45:17,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 15:45:17,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:45:17,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 15:45:17,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:45:17,486 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 600 [2022-11-25 15:45:17,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 102 transitions, 268 flow. Second operand has 13 states, 13 states have (on average 268.61538461538464) internal successors, (3492), 13 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:17,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:45:17,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 600 [2022-11-25 15:45:17,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:45:22,535 INFO L130 PetriNetUnfolder]: 32456/49262 cut-off events. [2022-11-25 15:45:22,535 INFO L131 PetriNetUnfolder]: For 4851/4851 co-relation queries the response was YES. [2022-11-25 15:45:22,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99377 conditions, 49262 events. 32456/49262 cut-off events. For 4851/4851 co-relation queries the response was YES. Maximal size of possible extension queue 1412. Compared 352856 event pairs, 28786 based on Foata normal form. 6/33915 useless extension candidates. Maximal degree in co-relation 99359. Up to 47057 conditions per place. [2022-11-25 15:45:22,876 INFO L137 encePairwiseOnDemand]: 597/600 looper letters, 85 selfloop transitions, 11 changer transitions 0/108 dead transitions. [2022-11-25 15:45:22,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 108 transitions, 496 flow [2022-11-25 15:45:22,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 15:45:22,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 15:45:22,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3304 transitions. [2022-11-25 15:45:22,886 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4588888888888889 [2022-11-25 15:45:22,886 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3304 transitions. [2022-11-25 15:45:22,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3304 transitions. [2022-11-25 15:45:22,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:45:22,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3304 transitions. [2022-11-25 15:45:22,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 275.3333333333333) internal successors, (3304), 12 states have internal predecessors, (3304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:22,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 600.0) internal successors, (7800), 13 states have internal predecessors, (7800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:22,910 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 600.0) internal successors, (7800), 13 states have internal predecessors, (7800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:22,911 INFO L175 Difference]: Start difference. First operand has 108 places, 102 transitions, 268 flow. Second operand 12 states and 3304 transitions. [2022-11-25 15:45:22,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 108 transitions, 496 flow [2022-11-25 15:45:22,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 108 transitions, 492 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:45:22,917 INFO L231 Difference]: Finished difference. Result has 124 places, 108 transitions, 348 flow [2022-11-25 15:45:22,917 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=600, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=348, PETRI_PLACES=124, PETRI_TRANSITIONS=108} [2022-11-25 15:45:22,918 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 28 predicate places. [2022-11-25 15:45:22,918 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 108 transitions, 348 flow [2022-11-25 15:45:22,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 268.61538461538464) internal successors, (3492), 13 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:22,919 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:45:22,920 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:45:22,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 15:45:23,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4052109-8899-4e02-ae4c-1664aa78710e/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:45:23,135 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-25 15:45:23,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:45:23,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1269572331, now seen corresponding path program 2 times [2022-11-25 15:45:23,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:45:23,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295627327] [2022-11-25 15:45:23,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:45:23,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:45:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:23,459 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:45:23,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:45:23,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295627327] [2022-11-25 15:45:23,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295627327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:45:23,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:45:23,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:45:23,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568793802] [2022-11-25 15:45:23,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:45:23,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:45:23,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:45:23,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:45:23,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:45:23,754 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 600 [2022-11-25 15:45:23,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 108 transitions, 348 flow. Second operand has 6 states, 6 states have (on average 258.6666666666667) internal successors, (1552), 6 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:23,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:45:23,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 600 [2022-11-25 15:45:23,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand