./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b 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_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN --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 db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a --- 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-6b4ec56 [2022-11-20 11:47:07,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:47:07,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:47:07,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:47:07,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:47:07,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:47:07,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:47:07,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:47:07,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:47:07,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:47:07,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:47:07,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:47:07,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:47:07,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:47:07,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:47:07,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:47:07,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:47:07,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:47:07,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:47:07,484 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:47:07,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:47:07,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:47:07,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:47:07,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:47:07,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:47:07,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:47:07,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:47:07,505 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:47:07,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:47:07,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:47:07,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:47:07,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:47:07,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:47:07,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:47:07,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:47:07,516 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:47:07,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:47:07,517 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:47:07,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:47:07,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:47:07,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:47:07,521 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:47:07,554 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:47:07,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:47:07,555 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:47:07,555 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:47:07,556 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:47:07,557 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:47:07,558 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:47:07,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:47:07,558 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:47:07,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:47:07,560 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:47:07,560 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:47:07,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:47:07,560 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:47:07,560 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:47:07,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:47:07,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:47:07,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:47:07,561 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:47:07,561 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:47:07,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:47:07,562 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:47:07,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:47:07,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:47:07,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:47:07,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:47:07,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:47:07,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:47:07,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:47:07,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:47:07,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:47:07,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:47:07,565 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:47:07,565 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:47:07,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:47:07,566 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a [2022-11-20 11:47:07,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:47:07,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:47:07,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:47:07,892 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:47:07,892 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:47:07,893 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2022-11-20 11:47:11,116 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:47:11,461 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:47:11,461 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2022-11-20 11:47:11,482 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/data/ed608aca3/2d635d17e39c40b3b7248a0a54a07479/FLAG98440c0d9 [2022-11-20 11:47:11,501 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/data/ed608aca3/2d635d17e39c40b3b7248a0a54a07479 [2022-11-20 11:47:11,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:47:11,507 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:47:11,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:47:11,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:47:11,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:47:11,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:47:11" (1/1) ... [2022-11-20 11:47:11,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b84a943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:11, skipping insertion in model container [2022-11-20 11:47:11,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:47:11" (1/1) ... [2022-11-20 11:47:11,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:47:11,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:47:12,312 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_0c54ae77-a582-49d8-8d79-9311098df783/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i[47038,47051] [2022-11-20 11:47:12,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:47:12,504 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:47:12,558 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_0c54ae77-a582-49d8-8d79-9311098df783/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i[47038,47051] [2022-11-20 11:47:12,578 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:47:12,694 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:47:12,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:12 WrapperNode [2022-11-20 11:47:12,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:47:12,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:47:12,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:47:12,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:47:12,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:12" (1/1) ... [2022-11-20 11:47:12,742 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:12" (1/1) ... [2022-11-20 11:47:12,791 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 241 [2022-11-20 11:47:12,793 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:47:12,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:47:12,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:47:12,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:47:12,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:12" (1/1) ... [2022-11-20 11:47:12,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:12" (1/1) ... [2022-11-20 11:47:12,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:12" (1/1) ... [2022-11-20 11:47:12,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:12" (1/1) ... [2022-11-20 11:47:12,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:12" (1/1) ... [2022-11-20 11:47:12,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:12" (1/1) ... [2022-11-20 11:47:12,845 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:12" (1/1) ... [2022-11-20 11:47:12,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:12" (1/1) ... [2022-11-20 11:47:12,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:47:12,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:47:12,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:47:12,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:47:12,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:12" (1/1) ... [2022-11-20 11:47:12,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:47:12,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:12,888 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:47:12,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:47:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:47:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 11:47:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-20 11:47:12,940 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-20 11:47:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:47:12,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:47:12,941 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-20 11:47:12,941 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-20 11:47:12,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:47:12,941 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 11:47:12,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:47:12,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:47:12,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 11:47:12,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:47:12,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:47:12,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:47:12,944 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:47:13,124 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:47:13,140 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:47:13,669 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:47:13,677 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:47:13,678 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-20 11:47:13,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:47:13 BoogieIcfgContainer [2022-11-20 11:47:13,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:47:13,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:47:13,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:47:13,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:47:13,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:47:11" (1/3) ... [2022-11-20 11:47:13,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c63a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:47:13, skipping insertion in model container [2022-11-20 11:47:13,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:12" (2/3) ... [2022-11-20 11:47:13,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c63a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:47:13, skipping insertion in model container [2022-11-20 11:47:13,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:47:13" (3/3) ... [2022-11-20 11:47:13,688 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2022-11-20 11:47:13,696 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:47:13,704 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:47:13,705 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-20 11:47:13,705 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:47:13,876 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-20 11:47:13,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 268 transitions, 558 flow [2022-11-20 11:47:14,190 INFO L130 PetriNetUnfolder]: 54/500 cut-off events. [2022-11-20 11:47:14,191 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2022-11-20 11:47:14,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 500 events. 54/500 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2036 event pairs, 0 based on Foata normal form. 0/410 useless extension candidates. Maximal degree in co-relation 252. Up to 8 conditions per place. [2022-11-20 11:47:14,206 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 268 transitions, 558 flow [2022-11-20 11:47:14,221 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 268 transitions, 558 flow [2022-11-20 11:47:14,240 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:47:14,248 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;@fb36de6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:47:14,248 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-20 11:47:14,263 INFO L130 PetriNetUnfolder]: 5/84 cut-off events. [2022-11-20 11:47:14,264 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:47:14,264 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:14,265 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:14,265 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-20 11:47:14,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:14,273 INFO L85 PathProgramCache]: Analyzing trace with hash -490778831, now seen corresponding path program 1 times [2022-11-20 11:47:14,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:14,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186106751] [2022-11-20 11:47:14,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:14,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:14,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:47:14,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:14,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186106751] [2022-11-20 11:47:14,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186106751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:14,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:14,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:47:14,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364793626] [2022-11-20 11:47:14,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:14,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:47:14,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:14,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:47:14,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:47:14,570 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 268 [2022-11-20 11:47:14,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 268 transitions, 558 flow. Second operand has 2 states, 2 states have (on average 245.0) internal successors, (490), 2 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:14,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:14,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 268 [2022-11-20 11:47:14,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:14,724 INFO L130 PetriNetUnfolder]: 15/459 cut-off events. [2022-11-20 11:47:14,725 INFO L131 PetriNetUnfolder]: For 38/57 co-relation queries the response was YES. [2022-11-20 11:47:14,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 459 events. 15/459 cut-off events. For 38/57 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1787 event pairs, 0 based on Foata normal form. 51/457 useless extension candidates. Maximal degree in co-relation 219. Up to 12 conditions per place. [2022-11-20 11:47:14,731 INFO L137 encePairwiseOnDemand]: 251/268 looper letters, 6 selfloop transitions, 0 changer transitions 0/250 dead transitions. [2022-11-20 11:47:14,731 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 250 transitions, 534 flow [2022-11-20 11:47:14,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:47:14,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 11:47:14,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 511 transitions. [2022-11-20 11:47:14,753 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9533582089552238 [2022-11-20 11:47:14,754 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 511 transitions. [2022-11-20 11:47:14,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 511 transitions. [2022-11-20 11:47:14,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:14,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 511 transitions. [2022-11-20 11:47:14,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 255.5) internal successors, (511), 2 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:14,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:14,775 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:14,777 INFO L175 Difference]: Start difference. First operand has 248 places, 268 transitions, 558 flow. Second operand 2 states and 511 transitions. [2022-11-20 11:47:14,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 250 transitions, 534 flow [2022-11-20 11:47:14,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 250 transitions, 534 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:47:14,792 INFO L231 Difference]: Finished difference. Result has 248 places, 250 transitions, 522 flow [2022-11-20 11:47:14,794 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=522, PETRI_PLACES=248, PETRI_TRANSITIONS=250} [2022-11-20 11:47:14,798 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, 0 predicate places. [2022-11-20 11:47:14,798 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 250 transitions, 522 flow [2022-11-20 11:47:14,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 245.0) internal successors, (490), 2 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:14,799 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:14,799 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:14,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:47:14,800 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-20 11:47:14,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:14,801 INFO L85 PathProgramCache]: Analyzing trace with hash -361696112, now seen corresponding path program 1 times [2022-11-20 11:47:14,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:14,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545063921] [2022-11-20 11:47:14,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:14,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:14,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:47:14,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:14,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545063921] [2022-11-20 11:47:14,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545063921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:14,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:14,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:47:14,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002417299] [2022-11-20 11:47:14,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:14,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:47:14,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:14,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:47:14,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:47:14,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 268 [2022-11-20 11:47:14,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 250 transitions, 522 flow. Second operand has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:14,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:14,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 268 [2022-11-20 11:47:14,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:15,101 INFO L130 PetriNetUnfolder]: 15/478 cut-off events. [2022-11-20 11:47:15,101 INFO L131 PetriNetUnfolder]: For 38/57 co-relation queries the response was YES. [2022-11-20 11:47:15,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524 conditions, 478 events. 15/478 cut-off events. For 38/57 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1778 event pairs, 0 based on Foata normal form. 0/423 useless extension candidates. Maximal degree in co-relation 519. Up to 20 conditions per place. [2022-11-20 11:47:15,105 INFO L137 encePairwiseOnDemand]: 265/268 looper letters, 17 selfloop transitions, 2 changer transitions 0/255 dead transitions. [2022-11-20 11:47:15,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 255 transitions, 570 flow [2022-11-20 11:47:15,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:47:15,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:47:15,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 728 transitions. [2022-11-20 11:47:15,108 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9054726368159204 [2022-11-20 11:47:15,108 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 728 transitions. [2022-11-20 11:47:15,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 728 transitions. [2022-11-20 11:47:15,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:15,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 728 transitions. [2022-11-20 11:47:15,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:15,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:15,116 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:15,116 INFO L175 Difference]: Start difference. First operand has 248 places, 250 transitions, 522 flow. Second operand 3 states and 728 transitions. [2022-11-20 11:47:15,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 255 transitions, 570 flow [2022-11-20 11:47:15,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 255 transitions, 570 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:47:15,127 INFO L231 Difference]: Finished difference. Result has 251 places, 251 transitions, 534 flow [2022-11-20 11:47:15,128 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=534, PETRI_PLACES=251, PETRI_TRANSITIONS=251} [2022-11-20 11:47:15,128 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, 3 predicate places. [2022-11-20 11:47:15,129 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 251 transitions, 534 flow [2022-11-20 11:47:15,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:15,130 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:15,131 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:15,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:47:15,132 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-20 11:47:15,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:15,132 INFO L85 PathProgramCache]: Analyzing trace with hash 71873473, now seen corresponding path program 1 times [2022-11-20 11:47:15,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:15,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470715568] [2022-11-20 11:47:15,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:15,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:15,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:47:15,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:15,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470715568] [2022-11-20 11:47:15,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470715568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:15,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:15,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:47:15,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891467079] [2022-11-20 11:47:15,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:15,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:47:15,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:15,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:47:15,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:47:15,362 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 268 [2022-11-20 11:47:15,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 251 transitions, 534 flow. Second operand has 4 states, 4 states have (on average 232.75) internal successors, (931), 4 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:15,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:15,364 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 268 [2022-11-20 11:47:15,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:15,538 INFO L130 PetriNetUnfolder]: 15/477 cut-off events. [2022-11-20 11:47:15,538 INFO L131 PetriNetUnfolder]: For 39/58 co-relation queries the response was YES. [2022-11-20 11:47:15,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 477 events. 15/477 cut-off events. For 39/58 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1791 event pairs, 0 based on Foata normal form. 0/425 useless extension candidates. Maximal degree in co-relation 531. Up to 25 conditions per place. [2022-11-20 11:47:15,543 INFO L137 encePairwiseOnDemand]: 262/268 looper letters, 23 selfloop transitions, 4 changer transitions 0/258 dead transitions. [2022-11-20 11:47:15,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 258 transitions, 602 flow [2022-11-20 11:47:15,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:47:15,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:47:15,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1184 transitions. [2022-11-20 11:47:15,548 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8835820895522388 [2022-11-20 11:47:15,548 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1184 transitions. [2022-11-20 11:47:15,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1184 transitions. [2022-11-20 11:47:15,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:15,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1184 transitions. [2022-11-20 11:47:15,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 236.8) internal successors, (1184), 5 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:15,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 268.0) internal successors, (1608), 6 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:15,556 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 268.0) internal successors, (1608), 6 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:15,556 INFO L175 Difference]: Start difference. First operand has 251 places, 251 transitions, 534 flow. Second operand 5 states and 1184 transitions. [2022-11-20 11:47:15,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 258 transitions, 602 flow [2022-11-20 11:47:15,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 258 transitions, 600 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:47:15,563 INFO L231 Difference]: Finished difference. Result has 257 places, 253 transitions, 558 flow [2022-11-20 11:47:15,564 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=558, PETRI_PLACES=257, PETRI_TRANSITIONS=253} [2022-11-20 11:47:15,565 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, 9 predicate places. [2022-11-20 11:47:15,566 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 253 transitions, 558 flow [2022-11-20 11:47:15,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 232.75) internal successors, (931), 4 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:15,567 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:15,567 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:15,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:47:15,567 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-20 11:47:15,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:15,568 INFO L85 PathProgramCache]: Analyzing trace with hash 568656641, now seen corresponding path program 1 times [2022-11-20 11:47:15,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:15,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849968174] [2022-11-20 11:47:15,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:15,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:15,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:47:15,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:15,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849968174] [2022-11-20 11:47:15,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849968174] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:47:15,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163671340] [2022-11-20 11:47:15,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:15,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:15,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:15,805 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:15,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:47:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:15,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:47:15,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:16,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:47:16,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:47:16,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:47:16,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163671340] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:47:16,168 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:47:16,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 11:47:16,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129955650] [2022-11-20 11:47:16,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:47:16,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:47:16,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:16,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:47:16,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:47:16,176 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 268 [2022-11-20 11:47:16,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 253 transitions, 558 flow. Second operand has 10 states, 10 states have (on average 234.0) internal successors, (2340), 10 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:16,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:16,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 268 [2022-11-20 11:47:16,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:16,444 INFO L130 PetriNetUnfolder]: 15/497 cut-off events. [2022-11-20 11:47:16,444 INFO L131 PetriNetUnfolder]: For 45/64 co-relation queries the response was YES. [2022-11-20 11:47:16,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 585 conditions, 497 events. 15/497 cut-off events. For 45/64 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1696 event pairs, 0 based on Foata normal form. 3/450 useless extension candidates. Maximal degree in co-relation 575. Up to 16 conditions per place. [2022-11-20 11:47:16,449 INFO L137 encePairwiseOnDemand]: 260/268 looper letters, 26 selfloop transitions, 11 changer transitions 0/268 dead transitions. [2022-11-20 11:47:16,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 268 transitions, 670 flow [2022-11-20 11:47:16,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:47:16,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 11:47:16,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2581 transitions. [2022-11-20 11:47:16,461 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8755088195386703 [2022-11-20 11:47:16,461 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2581 transitions. [2022-11-20 11:47:16,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2581 transitions. [2022-11-20 11:47:16,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:16,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2581 transitions. [2022-11-20 11:47:16,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 234.63636363636363) internal successors, (2581), 11 states have internal predecessors, (2581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:16,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 268.0) internal successors, (3216), 12 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:16,477 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 268.0) internal successors, (3216), 12 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:16,477 INFO L175 Difference]: Start difference. First operand has 257 places, 253 transitions, 558 flow. Second operand 11 states and 2581 transitions. [2022-11-20 11:47:16,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 268 transitions, 670 flow [2022-11-20 11:47:16,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 268 transitions, 666 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:47:16,483 INFO L231 Difference]: Finished difference. Result has 270 places, 258 transitions, 620 flow [2022-11-20 11:47:16,484 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=620, PETRI_PLACES=270, PETRI_TRANSITIONS=258} [2022-11-20 11:47:16,485 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, 22 predicate places. [2022-11-20 11:47:16,486 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 258 transitions, 620 flow [2022-11-20 11:47:16,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 234.0) internal successors, (2340), 10 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:16,488 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:16,489 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:16,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 11:47:16,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:16,694 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-20 11:47:16,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:16,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1379715990, now seen corresponding path program 1 times [2022-11-20 11:47:16,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:16,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217695408] [2022-11-20 11:47:16,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:16,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:16,917 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:47:16,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:16,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217695408] [2022-11-20 11:47:16,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217695408] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:47:16,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793931622] [2022-11-20 11:47:16,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:16,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:16,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:16,920 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:16,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:47:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:17,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:47:17,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:17,164 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:47:17,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:47:17,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793931622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:17,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:47:17,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:47:17,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654007938] [2022-11-20 11:47:17,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:17,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:47:17,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:17,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:47:17,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:47:17,174 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 268 [2022-11-20 11:47:17,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 258 transitions, 620 flow. Second operand has 6 states, 6 states have (on average 233.66666666666666) internal successors, (1402), 6 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:17,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:17,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 268 [2022-11-20 11:47:17,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:17,371 INFO L130 PetriNetUnfolder]: 15/495 cut-off events. [2022-11-20 11:47:17,372 INFO L131 PetriNetUnfolder]: For 66/85 co-relation queries the response was YES. [2022-11-20 11:47:17,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 495 events. 15/495 cut-off events. For 66/85 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1676 event pairs, 0 based on Foata normal form. 2/447 useless extension candidates. Maximal degree in co-relation 590. Up to 22 conditions per place. [2022-11-20 11:47:17,376 INFO L137 encePairwiseOnDemand]: 263/268 looper letters, 22 selfloop transitions, 8 changer transitions 0/261 dead transitions. [2022-11-20 11:47:17,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 261 transitions, 678 flow [2022-11-20 11:47:17,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:47:17,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:47:17,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1644 transitions. [2022-11-20 11:47:17,381 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8763326226012793 [2022-11-20 11:47:17,381 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1644 transitions. [2022-11-20 11:47:17,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1644 transitions. [2022-11-20 11:47:17,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:17,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1644 transitions. [2022-11-20 11:47:17,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 234.85714285714286) internal successors, (1644), 7 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:17,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 268.0) internal successors, (2144), 8 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:17,393 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 268.0) internal successors, (2144), 8 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:17,393 INFO L175 Difference]: Start difference. First operand has 270 places, 258 transitions, 620 flow. Second operand 7 states and 1644 transitions. [2022-11-20 11:47:17,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 261 transitions, 678 flow [2022-11-20 11:47:17,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 261 transitions, 664 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-20 11:47:17,404 INFO L231 Difference]: Finished difference. Result has 270 places, 256 transitions, 608 flow [2022-11-20 11:47:17,404 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=608, PETRI_PLACES=270, PETRI_TRANSITIONS=256} [2022-11-20 11:47:17,407 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, 22 predicate places. [2022-11-20 11:47:17,407 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 256 transitions, 608 flow [2022-11-20 11:47:17,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.66666666666666) internal successors, (1402), 6 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:17,408 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:17,408 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:17,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:17,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:17,614 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-20 11:47:17,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:17,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1725082145, now seen corresponding path program 1 times [2022-11-20 11:47:17,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:17,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755549607] [2022-11-20 11:47:17,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:17,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:17,754 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:47:17,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:17,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755549607] [2022-11-20 11:47:17,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755549607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:17,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:17,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:47:17,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126393969] [2022-11-20 11:47:17,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:17,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:47:17,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:17,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:47:17,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:47:17,757 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 268 [2022-11-20 11:47:17,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 256 transitions, 608 flow. Second operand has 4 states, 4 states have (on average 234.75) internal successors, (939), 4 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:17,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:17,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 268 [2022-11-20 11:47:17,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:17,893 INFO L130 PetriNetUnfolder]: 15/494 cut-off events. [2022-11-20 11:47:17,893 INFO L131 PetriNetUnfolder]: For 67/86 co-relation queries the response was YES. [2022-11-20 11:47:17,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 494 events. 15/494 cut-off events. For 67/86 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1676 event pairs, 0 based on Foata normal form. 1/445 useless extension candidates. Maximal degree in co-relation 587. Up to 17 conditions per place. [2022-11-20 11:47:17,897 INFO L137 encePairwiseOnDemand]: 262/268 looper letters, 13 selfloop transitions, 12 changer transitions 0/256 dead transitions. [2022-11-20 11:47:17,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 256 transitions, 656 flow [2022-11-20 11:47:17,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:47:17,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:47:17,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1174 transitions. [2022-11-20 11:47:17,903 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8761194029850746 [2022-11-20 11:47:17,904 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1174 transitions. [2022-11-20 11:47:17,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1174 transitions. [2022-11-20 11:47:17,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:17,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1174 transitions. [2022-11-20 11:47:17,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 234.8) internal successors, (1174), 5 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:17,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 268.0) internal successors, (1608), 6 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:17,912 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 268.0) internal successors, (1608), 6 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:17,912 INFO L175 Difference]: Start difference. First operand has 270 places, 256 transitions, 608 flow. Second operand 5 states and 1174 transitions. [2022-11-20 11:47:17,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 256 transitions, 656 flow [2022-11-20 11:47:17,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 256 transitions, 637 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-11-20 11:47:17,919 INFO L231 Difference]: Finished difference. Result has 266 places, 256 transitions, 619 flow [2022-11-20 11:47:17,920 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=619, PETRI_PLACES=266, PETRI_TRANSITIONS=256} [2022-11-20 11:47:17,922 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, 18 predicate places. [2022-11-20 11:47:17,922 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 256 transitions, 619 flow [2022-11-20 11:47:17,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 234.75) internal successors, (939), 4 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:17,923 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:17,923 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:17,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:47:17,924 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-20 11:47:17,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:17,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1711284515, now seen corresponding path program 2 times [2022-11-20 11:47:17,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:17,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236506095] [2022-11-20 11:47:17,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:17,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:18,087 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-20 11:47:18,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:18,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236506095] [2022-11-20 11:47:18,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236506095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:18,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:18,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:47:18,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900108668] [2022-11-20 11:47:18,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:18,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:47:18,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:18,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:47:18,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:47:18,092 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 268 [2022-11-20 11:47:18,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 256 transitions, 619 flow. Second operand has 4 states, 4 states have (on average 233.75) internal successors, (935), 4 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:18,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:18,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 268 [2022-11-20 11:47:18,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:18,217 INFO L130 PetriNetUnfolder]: 10/374 cut-off events. [2022-11-20 11:47:18,218 INFO L131 PetriNetUnfolder]: For 67/124 co-relation queries the response was YES. [2022-11-20 11:47:18,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 374 events. 10/374 cut-off events. For 67/124 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 926 event pairs, 0 based on Foata normal form. 6/345 useless extension candidates. Maximal degree in co-relation 456. Up to 15 conditions per place. [2022-11-20 11:47:18,221 INFO L137 encePairwiseOnDemand]: 261/268 looper letters, 14 selfloop transitions, 4 changer transitions 0/256 dead transitions. [2022-11-20 11:47:18,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 256 transitions, 655 flow [2022-11-20 11:47:18,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:47:18,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:47:18,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1181 transitions. [2022-11-20 11:47:18,229 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8813432835820896 [2022-11-20 11:47:18,229 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1181 transitions. [2022-11-20 11:47:18,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1181 transitions. [2022-11-20 11:47:18,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:18,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1181 transitions. [2022-11-20 11:47:18,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 236.2) internal successors, (1181), 5 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:18,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 268.0) internal successors, (1608), 6 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:18,236 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 268.0) internal successors, (1608), 6 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:18,237 INFO L175 Difference]: Start difference. First operand has 266 places, 256 transitions, 619 flow. Second operand 5 states and 1181 transitions. [2022-11-20 11:47:18,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 256 transitions, 655 flow [2022-11-20 11:47:18,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 256 transitions, 637 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:47:18,249 INFO L231 Difference]: Finished difference. Result has 266 places, 254 transitions, 609 flow [2022-11-20 11:47:18,249 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=609, PETRI_PLACES=266, PETRI_TRANSITIONS=254} [2022-11-20 11:47:18,250 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, 18 predicate places. [2022-11-20 11:47:18,250 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 254 transitions, 609 flow [2022-11-20 11:47:18,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 233.75) internal successors, (935), 4 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:18,251 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:18,251 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:18,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:47:18,252 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-20 11:47:18,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:18,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1904447508, now seen corresponding path program 1 times [2022-11-20 11:47:18,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:18,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993218067] [2022-11-20 11:47:18,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:18,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:18,501 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:47:18,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:18,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993218067] [2022-11-20 11:47:18,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993218067] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:47:18,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012597814] [2022-11-20 11:47:18,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:18,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:18,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:18,504 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:18,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:47:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:18,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:47:18,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:18,810 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:47:18,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:47:18,966 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:47:18,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012597814] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:47:18,966 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:47:18,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-20 11:47:18,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819575952] [2022-11-20 11:47:18,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:47:18,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:47:18,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:18,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:47:18,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:47:18,973 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 268 [2022-11-20 11:47:18,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 254 transitions, 609 flow. Second operand has 18 states, 18 states have (on average 234.44444444444446) internal successors, (4220), 18 states have internal predecessors, (4220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:18,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:18,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 268 [2022-11-20 11:47:18,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:19,333 INFO L130 PetriNetUnfolder]: 10/446 cut-off events. [2022-11-20 11:47:19,333 INFO L131 PetriNetUnfolder]: For 89/106 co-relation queries the response was YES. [2022-11-20 11:47:19,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 625 conditions, 446 events. 10/446 cut-off events. For 89/106 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 923 event pairs, 0 based on Foata normal form. 4/416 useless extension candidates. Maximal degree in co-relation 612. Up to 15 conditions per place. [2022-11-20 11:47:19,337 INFO L137 encePairwiseOnDemand]: 262/268 looper letters, 45 selfloop transitions, 21 changer transitions 0/295 dead transitions. [2022-11-20 11:47:19,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 295 transitions, 907 flow [2022-11-20 11:47:19,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:47:19,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:47:19,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4921 transitions. [2022-11-20 11:47:19,347 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8743781094527363 [2022-11-20 11:47:19,347 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4921 transitions. [2022-11-20 11:47:19,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4921 transitions. [2022-11-20 11:47:19,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:19,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4921 transitions. [2022-11-20 11:47:19,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 234.33333333333334) internal successors, (4921), 21 states have internal predecessors, (4921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:19,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 268.0) internal successors, (5896), 22 states have internal predecessors, (5896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:19,373 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 268.0) internal successors, (5896), 22 states have internal predecessors, (5896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:19,374 INFO L175 Difference]: Start difference. First operand has 266 places, 254 transitions, 609 flow. Second operand 21 states and 4921 transitions. [2022-11-20 11:47:19,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 295 transitions, 907 flow [2022-11-20 11:47:19,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 295 transitions, 899 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:47:19,381 INFO L231 Difference]: Finished difference. Result has 287 places, 267 transitions, 757 flow [2022-11-20 11:47:19,381 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=757, PETRI_PLACES=287, PETRI_TRANSITIONS=267} [2022-11-20 11:47:19,382 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, 39 predicate places. [2022-11-20 11:47:19,382 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 267 transitions, 757 flow [2022-11-20 11:47:19,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 234.44444444444446) internal successors, (4220), 18 states have internal predecessors, (4220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:19,385 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:19,385 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:19,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:19,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:19,591 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-20 11:47:19,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:19,592 INFO L85 PathProgramCache]: Analyzing trace with hash -141554344, now seen corresponding path program 2 times [2022-11-20 11:47:19,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:19,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120820745] [2022-11-20 11:47:19,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:19,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:20,289 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:47:20,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:20,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120820745] [2022-11-20 11:47:20,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120820745] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:47:20,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763415125] [2022-11-20 11:47:20,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:47:20,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:20,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:20,292 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:20,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:47:20,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:47:20,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:47:20,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:47:20,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:20,791 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:47:20,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:47:21,256 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:47:21,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763415125] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:47:21,257 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:47:21,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-11-20 11:47:21,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785972082] [2022-11-20 11:47:21,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:47:21,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 11:47:21,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:21,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 11:47:21,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 11:47:21,269 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 268 [2022-11-20 11:47:21,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 267 transitions, 757 flow. Second operand has 34 states, 34 states have (on average 234.7058823529412) internal successors, (7980), 34 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:21,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:21,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 268 [2022-11-20 11:47:21,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:22,216 INFO L130 PetriNetUnfolder]: 10/590 cut-off events. [2022-11-20 11:47:22,216 INFO L131 PetriNetUnfolder]: For 436/453 co-relation queries the response was YES. [2022-11-20 11:47:22,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 998 conditions, 590 events. 10/590 cut-off events. For 436/453 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 927 event pairs, 0 based on Foata normal form. 8/564 useless extension candidates. Maximal degree in co-relation 981. Up to 19 conditions per place. [2022-11-20 11:47:22,220 INFO L137 encePairwiseOnDemand]: 262/268 looper letters, 85 selfloop transitions, 45 changer transitions 0/359 dead transitions. [2022-11-20 11:47:22,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 359 transitions, 1485 flow [2022-11-20 11:47:22,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-20 11:47:22,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-20 11:47:22,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 10533 transitions. [2022-11-20 11:47:22,243 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8733830845771144 [2022-11-20 11:47:22,243 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 10533 transitions. [2022-11-20 11:47:22,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 10533 transitions. [2022-11-20 11:47:22,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:22,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 10533 transitions. [2022-11-20 11:47:22,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 234.06666666666666) internal successors, (10533), 45 states have internal predecessors, (10533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:22,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 268.0) internal successors, (12328), 46 states have internal predecessors, (12328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:22,297 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 268.0) internal successors, (12328), 46 states have internal predecessors, (12328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:22,297 INFO L175 Difference]: Start difference. First operand has 287 places, 267 transitions, 757 flow. Second operand 45 states and 10533 transitions. [2022-11-20 11:47:22,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 359 transitions, 1485 flow [2022-11-20 11:47:22,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 359 transitions, 1419 flow, removed 26 selfloop flow, removed 7 redundant places. [2022-11-20 11:47:22,307 INFO L231 Difference]: Finished difference. Result has 333 places, 292 transitions, 1059 flow [2022-11-20 11:47:22,307 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1059, PETRI_PLACES=333, PETRI_TRANSITIONS=292} [2022-11-20 11:47:22,308 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, 85 predicate places. [2022-11-20 11:47:22,309 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 292 transitions, 1059 flow [2022-11-20 11:47:22,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 234.7058823529412) internal successors, (7980), 34 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:22,311 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:22,312 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:22,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:22,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:22,523 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-20 11:47:22,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:22,524 INFO L85 PathProgramCache]: Analyzing trace with hash -7726112, now seen corresponding path program 3 times [2022-11-20 11:47:22,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:22,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432781849] [2022-11-20 11:47:22,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:22,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:24,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1910 backedges. 0 proven. 1905 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:47:24,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:24,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432781849] [2022-11-20 11:47:24,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432781849] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:47:24,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835609406] [2022-11-20 11:47:24,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:47:24,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:24,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:24,743 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:24,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c54ae77-a582-49d8-8d79-9311098df783/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process