./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd49b85-9f7d-4569-bda5-d28183108cfe/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd49b85-9f7d-4569-bda5-d28183108cfe/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd49b85-9f7d-4569-bda5-d28183108cfe/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd49b85-9f7d-4569-bda5-d28183108cfe/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd49b85-9f7d-4569-bda5-d28183108cfe/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd49b85-9f7d-4569-bda5-d28183108cfe/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 20:51:15,029 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:51:15,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:51:15,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:51:15,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:51:15,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:51:15,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:51:15,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:51:15,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:51:15,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:51:15,048 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:51:15,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:51:15,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:51:15,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:51:15,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:51:15,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:51:15,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:51:15,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:51:15,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:51:15,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:51:15,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:51:15,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:51:15,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:51:15,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:51:15,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:51:15,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:51:15,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:51:15,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:51:15,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:51:15,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:51:15,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:51:15,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:51:15,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:51:15,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:51:15,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:51:15,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:51:15,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:51:15,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:51:15,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:51:15,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:51:15,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:51:15,066 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd49b85-9f7d-4569-bda5-d28183108cfe/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 20:51:15,080 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:51:15,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:51:15,080 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:51:15,080 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:51:15,081 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:51:15,081 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:51:15,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:51:15,081 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:51:15,082 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:51:15,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:51:15,082 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:51:15,082 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 20:51:15,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:51:15,082 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:51:15,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:51:15,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:51:15,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:51:15,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:51:15,082 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 20:51:15,083 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:51:15,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:51:15,083 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:51:15,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:51:15,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:51:15,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:51:15,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:51:15,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:51:15,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:51:15,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:51:15,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:51:15,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:51:15,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:51:15,084 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:51:15,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:51:15,084 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:51:15,084 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:51:15,084 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:51:15,084 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd49b85-9f7d-4569-bda5-d28183108cfe/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd49b85-9f7d-4569-bda5-d28183108cfe/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 [2022-12-13 20:51:15,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:51:15,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:51:15,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:51:15,300 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:51:15,300 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:51:15,301 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd49b85-9f7d-4569-bda5-d28183108cfe/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i [2022-12-13 20:51:17,882 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:51:18,093 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:51:18,094 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd49b85-9f7d-4569-bda5-d28183108cfe/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i [2022-12-13 20:51:18,105 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd49b85-9f7d-4569-bda5-d28183108cfe/bin/uautomizer-uyxdKDjOR8/data/98ade8b69/34e46edfc960455fa0c91b79691e6943/FLAGf4e96c0e1 [2022-12-13 20:51:18,120 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd49b85-9f7d-4569-bda5-d28183108cfe/bin/uautomizer-uyxdKDjOR8/data/98ade8b69/34e46edfc960455fa0c91b79691e6943 [2022-12-13 20:51:18,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:51:18,124 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:51:18,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:51:18,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:51:18,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:51:18,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:51:18" (1/1) ... [2022-12-13 20:51:18,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bc01409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:51:18, skipping insertion in model container [2022-12-13 20:51:18,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:51:18" (1/1) ... [2022-12-13 20:51:18,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:51:18,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:51:18,356 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_fbd49b85-9f7d-4569-bda5-d28183108cfe/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i[30176,30189] [2022-12-13 20:51:18,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:51:18,381 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:51:18,406 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_fbd49b85-9f7d-4569-bda5-d28183108cfe/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i[30176,30189] [2022-12-13 20:51:18,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:51:18,437 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:51:18,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:51:18 WrapperNode [2022-12-13 20:51:18,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:51:18,439 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:51:18,439 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:51:18,439 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:51:18,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:51:18" (1/1) ... [2022-12-13 20:51:18,454 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:51:18" (1/1) ... [2022-12-13 20:51:18,470 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2022-12-13 20:51:18,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:51:18,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:51:18,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:51:18,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:51:18,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:51:18" (1/1) ... [2022-12-13 20:51:18,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:51:18" (1/1) ... [2022-12-13 20:51:18,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:51:18" (1/1) ... [2022-12-13 20:51:18,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:51:18" (1/1) ... [2022-12-13 20:51:18,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:51:18" (1/1) ... [2022-12-13 20:51:18,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:51:18" (1/1) ... [2022-12-13 20:51:18,488 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:51:18" (1/1) ... [2022-12-13 20:51:18,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:51:18" (1/1) ... [2022-12-13 20:51:18,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:51:18,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:51:18,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:51:18,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:51:18,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:51:18" (1/1) ... [2022-12-13 20:51:18,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:51:18,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd49b85-9f7d-4569-bda5-d28183108cfe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:51:18,521 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd49b85-9f7d-4569-bda5-d28183108cfe/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:51:18,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd49b85-9f7d-4569-bda5-d28183108cfe/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:51:18,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 20:51:18,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 20:51:18,556 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 20:51:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:51:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:51:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 20:51:18,557 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 20:51:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:51:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:51:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:51:18,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:51:18,559 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 20:51:18,668 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:51:18,670 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:51:18,870 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:51:18,876 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:51:18,876 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-12-13 20:51:18,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:51:18 BoogieIcfgContainer [2022-12-13 20:51:18,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:51:18,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:51:18,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:51:18,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:51:18,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:51:18" (1/3) ... [2022-12-13 20:51:18,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4ebcba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:51:18, skipping insertion in model container [2022-12-13 20:51:18,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:51:18" (2/3) ... [2022-12-13 20:51:18,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4ebcba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:51:18, skipping insertion in model container [2022-12-13 20:51:18,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:51:18" (3/3) ... [2022-12-13 20:51:18,888 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_01-simple_racing.i [2022-12-13 20:51:18,896 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 20:51:18,906 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:51:18,906 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-13 20:51:18,906 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 20:51:18,963 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 20:51:18,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 127 transitions, 262 flow [2022-12-13 20:51:19,039 INFO L130 PetriNetUnfolder]: 17/162 cut-off events. [2022-12-13 20:51:19,040 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 20:51:19,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 162 events. 17/162 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 366 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 80. Up to 4 conditions per place. [2022-12-13 20:51:19,044 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 127 transitions, 262 flow [2022-12-13 20:51:19,048 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 124 transitions, 256 flow [2022-12-13 20:51:19,051 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:51:19,059 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 116 places, 124 transitions, 256 flow [2022-12-13 20:51:19,061 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 116 places, 124 transitions, 256 flow [2022-12-13 20:51:19,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 124 transitions, 256 flow [2022-12-13 20:51:19,092 INFO L130 PetriNetUnfolder]: 16/159 cut-off events. [2022-12-13 20:51:19,092 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 20:51:19,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 159 events. 16/159 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 364 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 80. Up to 4 conditions per place. [2022-12-13 20:51:19,098 INFO L119 LiptonReduction]: Number of co-enabled transitions 3240 [2022-12-13 20:51:21,620 INFO L134 LiptonReduction]: Checked pairs total: 5379 [2022-12-13 20:51:21,620 INFO L136 LiptonReduction]: Total number of compositions: 113 [2022-12-13 20:51:21,630 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:51:21,634 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;@6355e309, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:51:21,634 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-12-13 20:51:21,637 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2022-12-13 20:51:21,637 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:51:21,637 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:51:21,637 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 20:51:21,638 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 20:51:21,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:51:21,641 INFO L85 PathProgramCache]: Analyzing trace with hash 14954615, now seen corresponding path program 1 times [2022-12-13 20:51:21,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:51:21,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385067459] [2022-12-13 20:51:21,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:51:21,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:51:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:21,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:51:21,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:51:21,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385067459] [2022-12-13 20:51:21,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385067459] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:51:21,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:51:21,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:51:21,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994932367] [2022-12-13 20:51:21,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:51:21,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:51:21,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:51:21,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:51:21,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:51:21,859 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 240 [2022-12-13 20:51:21,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 38 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:21,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:51:21,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 240 [2022-12-13 20:51:21,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:51:21,942 INFO L130 PetriNetUnfolder]: 84/220 cut-off events. [2022-12-13 20:51:21,942 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 20:51:21,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 220 events. 84/220 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1013 event pairs, 0 based on Foata normal form. 8/182 useless extension candidates. Maximal degree in co-relation 388. Up to 179 conditions per place. [2022-12-13 20:51:21,944 INFO L137 encePairwiseOnDemand]: 226/240 looper letters, 35 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2022-12-13 20:51:21,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 40 transitions, 162 flow [2022-12-13 20:51:21,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:51:21,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:51:21,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2022-12-13 20:51:21,958 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5305555555555556 [2022-12-13 20:51:21,958 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2022-12-13 20:51:21,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2022-12-13 20:51:21,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:51:21,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2022-12-13 20:51:21,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:21,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:21,971 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:21,972 INFO L175 Difference]: Start difference. First operand has 33 places, 38 transitions, 84 flow. Second operand 3 states and 382 transitions. [2022-12-13 20:51:21,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 40 transitions, 162 flow [2022-12-13 20:51:21,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 40 transitions, 162 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:51:21,977 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 70 flow [2022-12-13 20:51:21,978 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2022-12-13 20:51:21,982 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2022-12-13 20:51:21,982 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 70 flow [2022-12-13 20:51:21,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:21,983 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:51:21,983 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 20:51:21,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:51:21,983 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 20:51:21,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:51:21,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1486484515, now seen corresponding path program 1 times [2022-12-13 20:51:21,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:51:21,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669209737] [2022-12-13 20:51:21,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:51:21,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:51:22,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:22,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:51:22,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:51:22,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669209737] [2022-12-13 20:51:22,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669209737] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:51:22,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:51:22,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:51:22,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076930542] [2022-12-13 20:51:22,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:51:22,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:51:22,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:51:22,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:51:22,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:51:22,070 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 240 [2022-12-13 20:51:22,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:22,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:51:22,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 240 [2022-12-13 20:51:22,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:51:22,145 INFO L130 PetriNetUnfolder]: 77/212 cut-off events. [2022-12-13 20:51:22,145 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-12-13 20:51:22,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 212 events. 77/212 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 877 event pairs, 14 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 421. Up to 119 conditions per place. [2022-12-13 20:51:22,148 INFO L137 encePairwiseOnDemand]: 232/240 looper letters, 33 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2022-12-13 20:51:22,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 40 transitions, 178 flow [2022-12-13 20:51:22,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:51:22,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:51:22,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 371 transitions. [2022-12-13 20:51:22,151 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5152777777777777 [2022-12-13 20:51:22,151 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 371 transitions. [2022-12-13 20:51:22,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 371 transitions. [2022-12-13 20:51:22,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:51:22,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 371 transitions. [2022-12-13 20:51:22,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:22,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:22,154 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:22,154 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 70 flow. Second operand 3 states and 371 transitions. [2022-12-13 20:51:22,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 40 transitions, 178 flow [2022-12-13 20:51:22,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 40 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:51:22,155 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 90 flow [2022-12-13 20:51:22,155 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2022-12-13 20:51:22,156 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2022-12-13 20:51:22,156 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 90 flow [2022-12-13 20:51:22,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:22,156 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:51:22,156 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 20:51:22,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 20:51:22,157 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 20:51:22,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:51:22,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1486514810, now seen corresponding path program 1 times [2022-12-13 20:51:22,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:51:22,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539264281] [2022-12-13 20:51:22,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:51:22,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:51:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:51:22,176 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:51:22,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:51:22,209 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:51:22,209 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:51:22,210 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-12-13 20:51:22,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-12-13 20:51:22,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-12-13 20:51:22,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-12-13 20:51:22,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-12-13 20:51:22,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-12-13 20:51:22,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-12-13 20:51:22,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-12-13 20:51:22,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-12-13 20:51:22,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-12-13 20:51:22,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-12-13 20:51:22,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-12-13 20:51:22,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-12-13 20:51:22,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 20:51:22,215 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-13 20:51:22,217 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 20:51:22,217 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 20:51:22,234 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 20:51:22,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 165 transitions, 348 flow [2022-12-13 20:51:22,280 INFO L130 PetriNetUnfolder]: 31/272 cut-off events. [2022-12-13 20:51:22,280 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 20:51:22,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 272 events. 31/272 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 785 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 164. Up to 8 conditions per place. [2022-12-13 20:51:22,282 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 165 transitions, 348 flow [2022-12-13 20:51:22,286 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 165 transitions, 348 flow [2022-12-13 20:51:22,286 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:51:22,286 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 165 transitions, 348 flow [2022-12-13 20:51:22,286 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 165 transitions, 348 flow [2022-12-13 20:51:22,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 165 transitions, 348 flow [2022-12-13 20:51:22,306 INFO L130 PetriNetUnfolder]: 31/272 cut-off events. [2022-12-13 20:51:22,306 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 20:51:22,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 272 events. 31/272 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 785 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 164. Up to 8 conditions per place. [2022-12-13 20:51:22,310 INFO L119 LiptonReduction]: Number of co-enabled transitions 10440 [2022-12-13 20:51:24,604 INFO L134 LiptonReduction]: Checked pairs total: 27178 [2022-12-13 20:51:24,604 INFO L136 LiptonReduction]: Total number of compositions: 134 [2022-12-13 20:51:24,605 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:51:24,606 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;@6355e309, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:51:24,606 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-13 20:51:24,608 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2022-12-13 20:51:24,608 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:51:24,608 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:51:24,608 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:51:24,608 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 20:51:24,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:51:24,609 INFO L85 PathProgramCache]: Analyzing trace with hash 785075503, now seen corresponding path program 1 times [2022-12-13 20:51:24,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:51:24,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567311878] [2022-12-13 20:51:24,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:51:24,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:51:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:24,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:51:24,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:51:24,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567311878] [2022-12-13 20:51:24,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567311878] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:51:24,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:51:24,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:51:24,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9540631] [2022-12-13 20:51:24,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:51:24,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:51:24,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:51:24,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:51:24,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:51:24,647 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 299 [2022-12-13 20:51:24,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 66 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:24,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:51:24,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 299 [2022-12-13 20:51:24,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:51:25,182 INFO L130 PetriNetUnfolder]: 4435/7270 cut-off events. [2022-12-13 20:51:25,183 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2022-12-13 20:51:25,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14419 conditions, 7270 events. 4435/7270 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 47201 event pairs, 4228 based on Foata normal form. 710/5657 useless extension candidates. Maximal degree in co-relation 9668. Up to 7046 conditions per place. [2022-12-13 20:51:25,211 INFO L137 encePairwiseOnDemand]: 280/299 looper letters, 58 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2022-12-13 20:51:25,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 272 flow [2022-12-13 20:51:25,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:51:25,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:51:25,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2022-12-13 20:51:25,213 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5574136008918618 [2022-12-13 20:51:25,213 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2022-12-13 20:51:25,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2022-12-13 20:51:25,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:51:25,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2022-12-13 20:51:25,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:25,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:25,217 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:25,217 INFO L175 Difference]: Start difference. First operand has 55 places, 66 transitions, 150 flow. Second operand 3 states and 500 transitions. [2022-12-13 20:51:25,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 272 flow [2022-12-13 20:51:25,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 67 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:51:25,219 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 138 flow [2022-12-13 20:51:25,219 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2022-12-13 20:51:25,220 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2022-12-13 20:51:25,220 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 138 flow [2022-12-13 20:51:25,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:25,220 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:51:25,220 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:51:25,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 20:51:25,221 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 20:51:25,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:51:25,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1450150088, now seen corresponding path program 1 times [2022-12-13 20:51:25,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:51:25,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840587191] [2022-12-13 20:51:25,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:51:25,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:51:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:25,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:51:25,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:51:25,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840587191] [2022-12-13 20:51:25,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840587191] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:51:25,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:51:25,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:51:25,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151700478] [2022-12-13 20:51:25,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:51:25,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:51:25,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:51:25,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:51:25,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:51:25,271 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 299 [2022-12-13 20:51:25,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:25,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:51:25,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 299 [2022-12-13 20:51:25,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:51:25,936 INFO L130 PetriNetUnfolder]: 5030/8684 cut-off events. [2022-12-13 20:51:25,937 INFO L131 PetriNetUnfolder]: For 493/493 co-relation queries the response was YES. [2022-12-13 20:51:25,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17991 conditions, 8684 events. 5030/8684 cut-off events. For 493/493 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 61201 event pairs, 1676 based on Foata normal form. 0/6662 useless extension candidates. Maximal degree in co-relation 17903. Up to 6101 conditions per place. [2022-12-13 20:51:25,998 INFO L137 encePairwiseOnDemand]: 285/299 looper letters, 76 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2022-12-13 20:51:25,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 89 transitions, 396 flow [2022-12-13 20:51:25,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:51:25,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:51:26,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 502 transitions. [2022-12-13 20:51:26,001 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5596432552954292 [2022-12-13 20:51:26,001 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 502 transitions. [2022-12-13 20:51:26,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 502 transitions. [2022-12-13 20:51:26,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:51:26,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 502 transitions. [2022-12-13 20:51:26,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:26,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:26,009 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:26,009 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 138 flow. Second operand 3 states and 502 transitions. [2022-12-13 20:51:26,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 89 transitions, 396 flow [2022-12-13 20:51:26,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 89 transitions, 393 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:51:26,014 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 196 flow [2022-12-13 20:51:26,014 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2022-12-13 20:51:26,015 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2022-12-13 20:51:26,015 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 196 flow [2022-12-13 20:51:26,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:26,016 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:51:26,016 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 20:51:26,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 20:51:26,016 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 20:51:26,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:51:26,016 INFO L85 PathProgramCache]: Analyzing trace with hash 343557261, now seen corresponding path program 1 times [2022-12-13 20:51:26,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:51:26,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248317497] [2022-12-13 20:51:26,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:51:26,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:51:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:26,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:51:26,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:51:26,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248317497] [2022-12-13 20:51:26,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248317497] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:51:26,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042600889] [2022-12-13 20:51:26,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:51:26,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:51:26,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd49b85-9f7d-4569-bda5-d28183108cfe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:51:26,065 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd49b85-9f7d-4569-bda5-d28183108cfe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:51:26,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd49b85-9f7d-4569-bda5-d28183108cfe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 20:51:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:26,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:51:26,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:51:26,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:51:26,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:51:26,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042600889] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:51:26,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:51:26,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-13 20:51:26,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80376303] [2022-12-13 20:51:26,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:51:26,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:51:26,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:51:26,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:51:26,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:51:26,172 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 299 [2022-12-13 20:51:26,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:26,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:51:26,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 299 [2022-12-13 20:51:26,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:51:26,756 INFO L130 PetriNetUnfolder]: 4702/8294 cut-off events. [2022-12-13 20:51:26,756 INFO L131 PetriNetUnfolder]: For 1992/1992 co-relation queries the response was YES. [2022-12-13 20:51:26,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19539 conditions, 8294 events. 4702/8294 cut-off events. For 1992/1992 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 58382 event pairs, 2491 based on Foata normal form. 0/7068 useless extension candidates. Maximal degree in co-relation 5337. Up to 7928 conditions per place. [2022-12-13 20:51:26,793 INFO L137 encePairwiseOnDemand]: 296/299 looper letters, 60 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2022-12-13 20:51:26,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 69 transitions, 350 flow [2022-12-13 20:51:26,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:51:26,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:51:26,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 614 transitions. [2022-12-13 20:51:26,795 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5133779264214047 [2022-12-13 20:51:26,796 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 614 transitions. [2022-12-13 20:51:26,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 614 transitions. [2022-12-13 20:51:26,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:51:26,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 614 transitions. [2022-12-13 20:51:26,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:26,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:26,799 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:26,800 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 196 flow. Second operand 4 states and 614 transitions. [2022-12-13 20:51:26,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 69 transitions, 350 flow [2022-12-13 20:51:26,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 69 transitions, 336 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:51:26,812 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 184 flow [2022-12-13 20:51:26,812 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2022-12-13 20:51:26,813 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2022-12-13 20:51:26,813 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 184 flow [2022-12-13 20:51:26,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:26,813 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:51:26,813 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 20:51:26,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd49b85-9f7d-4569-bda5-d28183108cfe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 20:51:27,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbd49b85-9f7d-4569-bda5-d28183108cfe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:51:27,014 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 20:51:27,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:51:27,015 INFO L85 PathProgramCache]: Analyzing trace with hash 343557283, now seen corresponding path program 1 times [2022-12-13 20:51:27,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:51:27,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134076645] [2022-12-13 20:51:27,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:51:27,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:51:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:27,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:51:27,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:51:27,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134076645] [2022-12-13 20:51:27,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134076645] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:51:27,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:51:27,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:51:27,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683480111] [2022-12-13 20:51:27,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:51:27,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:51:27,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:51:27,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:51:27,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:51:27,073 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 299 [2022-12-13 20:51:27,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:27,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:51:27,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 299 [2022-12-13 20:51:27,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:51:27,581 INFO L130 PetriNetUnfolder]: 4374/7597 cut-off events. [2022-12-13 20:51:27,581 INFO L131 PetriNetUnfolder]: For 1172/1172 co-relation queries the response was YES. [2022-12-13 20:51:27,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17500 conditions, 7597 events. 4374/7597 cut-off events. For 1172/1172 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 52632 event pairs, 1526 based on Foata normal form. 0/6594 useless extension candidates. Maximal degree in co-relation 11033. Up to 6554 conditions per place. [2022-12-13 20:51:27,601 INFO L137 encePairwiseOnDemand]: 295/299 looper letters, 74 selfloop transitions, 4 changer transitions 0/85 dead transitions. [2022-12-13 20:51:27,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 85 transitions, 422 flow [2022-12-13 20:51:27,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:51:27,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:51:27,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2022-12-13 20:51:27,603 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5406911928651059 [2022-12-13 20:51:27,603 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2022-12-13 20:51:27,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2022-12-13 20:51:27,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:51:27,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2022-12-13 20:51:27,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:27,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:27,606 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:27,606 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 184 flow. Second operand 3 states and 485 transitions. [2022-12-13 20:51:27,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 85 transitions, 422 flow [2022-12-13 20:51:27,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 85 transitions, 419 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:51:27,608 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 193 flow [2022-12-13 20:51:27,608 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2022-12-13 20:51:27,609 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2022-12-13 20:51:27,609 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 193 flow [2022-12-13 20:51:27,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:27,610 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:51:27,610 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:51:27,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 20:51:27,610 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 20:51:27,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:51:27,611 INFO L85 PathProgramCache]: Analyzing trace with hash -281816331, now seen corresponding path program 1 times [2022-12-13 20:51:27,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:51:27,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296996676] [2022-12-13 20:51:27,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:51:27,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:51:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:27,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:51:27,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:51:27,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296996676] [2022-12-13 20:51:27,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296996676] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:51:27,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:51:27,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:51:27,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977377816] [2022-12-13 20:51:27,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:51:27,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:51:27,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:51:27,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:51:27,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:51:27,731 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 299 [2022-12-13 20:51:27,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 193 flow. Second operand has 5 states, 5 states have (on average 135.8) internal successors, (679), 5 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:27,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:51:27,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 299 [2022-12-13 20:51:27,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:51:28,496 INFO L130 PetriNetUnfolder]: 4969/8657 cut-off events. [2022-12-13 20:51:28,497 INFO L131 PetriNetUnfolder]: For 2884/2884 co-relation queries the response was YES. [2022-12-13 20:51:28,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20603 conditions, 8657 events. 4969/8657 cut-off events. For 2884/2884 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 61106 event pairs, 722 based on Foata normal form. 91/7813 useless extension candidates. Maximal degree in co-relation 20502. Up to 3731 conditions per place. [2022-12-13 20:51:28,518 INFO L137 encePairwiseOnDemand]: 283/299 looper letters, 165 selfloop transitions, 26 changer transitions 0/198 dead transitions. [2022-12-13 20:51:28,518 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 198 transitions, 1016 flow [2022-12-13 20:51:28,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:51:28,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 20:51:28,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1131 transitions. [2022-12-13 20:51:28,521 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5403726708074534 [2022-12-13 20:51:28,521 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1131 transitions. [2022-12-13 20:51:28,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1131 transitions. [2022-12-13 20:51:28,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:51:28,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1131 transitions. [2022-12-13 20:51:28,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 161.57142857142858) internal successors, (1131), 7 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:28,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:28,525 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:28,525 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 193 flow. Second operand 7 states and 1131 transitions. [2022-12-13 20:51:28,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 198 transitions, 1016 flow [2022-12-13 20:51:28,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 198 transitions, 998 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:51:28,528 INFO L231 Difference]: Finished difference. Result has 72 places, 77 transitions, 407 flow [2022-12-13 20:51:28,529 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=407, PETRI_PLACES=72, PETRI_TRANSITIONS=77} [2022-12-13 20:51:28,529 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 17 predicate places. [2022-12-13 20:51:28,529 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 77 transitions, 407 flow [2022-12-13 20:51:28,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.8) internal successors, (679), 5 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:28,530 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:51:28,530 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:51:28,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 20:51:28,530 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 20:51:28,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:51:28,530 INFO L85 PathProgramCache]: Analyzing trace with hash -281816251, now seen corresponding path program 1 times [2022-12-13 20:51:28,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:51:28,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333818395] [2022-12-13 20:51:28,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:51:28,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:51:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:28,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:51:28,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:51:28,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333818395] [2022-12-13 20:51:28,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333818395] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:51:28,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:51:28,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:51:28,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036291107] [2022-12-13 20:51:28,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:51:28,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:51:28,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:51:28,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:51:28,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:51:28,607 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 299 [2022-12-13 20:51:28,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 77 transitions, 407 flow. Second operand has 5 states, 5 states have (on average 135.8) internal successors, (679), 5 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:28,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:51:28,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 299 [2022-12-13 20:51:28,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:51:29,358 INFO L130 PetriNetUnfolder]: 4708/8331 cut-off events. [2022-12-13 20:51:29,358 INFO L131 PetriNetUnfolder]: For 9463/9463 co-relation queries the response was YES. [2022-12-13 20:51:29,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24043 conditions, 8331 events. 4708/8331 cut-off events. For 9463/9463 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 59186 event pairs, 662 based on Foata normal form. 253/8009 useless extension candidates. Maximal degree in co-relation 23935. Up to 3826 conditions per place. [2022-12-13 20:51:29,383 INFO L137 encePairwiseOnDemand]: 283/299 looper letters, 168 selfloop transitions, 33 changer transitions 0/208 dead transitions. [2022-12-13 20:51:29,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 208 transitions, 1270 flow [2022-12-13 20:51:29,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:51:29,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 20:51:29,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1128 transitions. [2022-12-13 20:51:29,386 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5389393215480172 [2022-12-13 20:51:29,386 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1128 transitions. [2022-12-13 20:51:29,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1128 transitions. [2022-12-13 20:51:29,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:51:29,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1128 transitions. [2022-12-13 20:51:29,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 161.14285714285714) internal successors, (1128), 7 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:29,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:29,390 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:29,390 INFO L175 Difference]: Start difference. First operand has 72 places, 77 transitions, 407 flow. Second operand 7 states and 1128 transitions. [2022-12-13 20:51:29,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 208 transitions, 1270 flow [2022-12-13 20:51:29,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 208 transitions, 1270 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:51:29,406 INFO L231 Difference]: Finished difference. Result has 82 places, 91 transitions, 657 flow [2022-12-13 20:51:29,406 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=657, PETRI_PLACES=82, PETRI_TRANSITIONS=91} [2022-12-13 20:51:29,406 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 27 predicate places. [2022-12-13 20:51:29,406 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 91 transitions, 657 flow [2022-12-13 20:51:29,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.8) internal successors, (679), 5 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:29,407 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:51:29,407 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 20:51:29,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 20:51:29,407 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 20:51:29,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:51:29,407 INFO L85 PathProgramCache]: Analyzing trace with hash -553892400, now seen corresponding path program 1 times [2022-12-13 20:51:29,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:51:29,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776000648] [2022-12-13 20:51:29,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:51:29,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:51:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:51:29,416 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:51:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:51:29,424 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:51:29,424 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:51:29,424 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-12-13 20:51:29,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-12-13 20:51:29,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-12-13 20:51:29,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-12-13 20:51:29,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-12-13 20:51:29,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-12-13 20:51:29,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-12-13 20:51:29,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-12-13 20:51:29,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-12-13 20:51:29,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-12-13 20:51:29,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-12-13 20:51:29,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-12-13 20:51:29,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-12-13 20:51:29,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-12-13 20:51:29,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-12-13 20:51:29,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-12-13 20:51:29,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-12-13 20:51:29,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 20:51:29,426 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:51:29,426 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 20:51:29,426 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 20:51:29,448 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 20:51:29,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 203 transitions, 436 flow [2022-12-13 20:51:29,492 INFO L130 PetriNetUnfolder]: 50/423 cut-off events. [2022-12-13 20:51:29,492 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 20:51:29,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 423 events. 50/423 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1396 event pairs, 1 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 280. Up to 16 conditions per place. [2022-12-13 20:51:29,494 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 203 transitions, 436 flow [2022-12-13 20:51:29,496 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 203 transitions, 436 flow [2022-12-13 20:51:29,496 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:51:29,497 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 184 places, 203 transitions, 436 flow [2022-12-13 20:51:29,497 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 184 places, 203 transitions, 436 flow [2022-12-13 20:51:29,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 203 transitions, 436 flow [2022-12-13 20:51:29,538 INFO L130 PetriNetUnfolder]: 50/423 cut-off events. [2022-12-13 20:51:29,538 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 20:51:29,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 423 events. 50/423 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1396 event pairs, 1 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 280. Up to 16 conditions per place. [2022-12-13 20:51:29,551 INFO L119 LiptonReduction]: Number of co-enabled transitions 19872 [2022-12-13 20:51:32,263 INFO L134 LiptonReduction]: Checked pairs total: 56834 [2022-12-13 20:51:32,263 INFO L136 LiptonReduction]: Total number of compositions: 159 [2022-12-13 20:51:32,265 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:51:32,265 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;@6355e309, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:51:32,265 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-12-13 20:51:32,267 INFO L130 PetriNetUnfolder]: 1/12 cut-off events. [2022-12-13 20:51:32,267 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:51:32,267 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:51:32,267 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:51:32,268 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 20:51:32,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:51:32,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1166948339, now seen corresponding path program 1 times [2022-12-13 20:51:32,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:51:32,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059248451] [2022-12-13 20:51:32,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:51:32,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:51:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:32,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:51:32,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:51:32,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059248451] [2022-12-13 20:51:32,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059248451] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:51:32,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:51:32,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:51:32,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705340499] [2022-12-13 20:51:32,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:51:32,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:51:32,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:51:32,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:51:32,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:51:32,298 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 362 [2022-12-13 20:51:32,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 89 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 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) [2022-12-13 20:51:32,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:51:32,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 362 [2022-12-13 20:51:32,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:51:39,609 INFO L130 PetriNetUnfolder]: 99392/142510 cut-off events. [2022-12-13 20:51:39,609 INFO L131 PetriNetUnfolder]: For 2441/2441 co-relation queries the response was YES. [2022-12-13 20:51:39,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282114 conditions, 142510 events. 99392/142510 cut-off events. For 2441/2441 co-relation queries the response was YES. Maximal size of possible extension queue 3685. Compared 1065120 event pairs, 64598 based on Foata normal form. 13015/110356 useless extension candidates. Maximal degree in co-relation 24698. Up to 137955 conditions per place. [2022-12-13 20:51:40,109 INFO L137 encePairwiseOnDemand]: 337/362 looper letters, 73 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2022-12-13 20:51:40,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 84 transitions, 348 flow [2022-12-13 20:51:40,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:51:40,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:51:40,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2022-12-13 20:51:40,112 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5626151012891344 [2022-12-13 20:51:40,112 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2022-12-13 20:51:40,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2022-12-13 20:51:40,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:51:40,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2022-12-13 20:51:40,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:40,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 362.0) internal successors, (1448), 4 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:40,115 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 362.0) internal successors, (1448), 4 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:40,115 INFO L175 Difference]: Start difference. First operand has 73 places, 89 transitions, 208 flow. Second operand 3 states and 611 transitions. [2022-12-13 20:51:40,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 84 transitions, 348 flow [2022-12-13 20:51:40,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 84 transitions, 348 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:51:40,118 INFO L231 Difference]: Finished difference. Result has 76 places, 70 transitions, 184 flow [2022-12-13 20:51:40,118 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=362, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=76, PETRI_TRANSITIONS=70} [2022-12-13 20:51:40,119 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 3 predicate places. [2022-12-13 20:51:40,119 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 70 transitions, 184 flow [2022-12-13 20:51:40,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 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) [2022-12-13 20:51:40,119 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:51:40,119 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:51:40,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 20:51:40,120 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 20:51:40,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:51:40,120 INFO L85 PathProgramCache]: Analyzing trace with hash 459485841, now seen corresponding path program 1 times [2022-12-13 20:51:40,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:51:40,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369766276] [2022-12-13 20:51:40,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:51:40,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:51:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:40,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:51:40,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:51:40,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369766276] [2022-12-13 20:51:40,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369766276] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:51:40,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:51:40,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:51:40,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862765041] [2022-12-13 20:51:40,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:51:40,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:51:40,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:51:40,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:51:40,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:51:40,166 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 362 [2022-12-13 20:51:40,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:40,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:51:40,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 362 [2022-12-13 20:51:40,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:51:50,622 INFO L130 PetriNetUnfolder]: 130103/192769 cut-off events. [2022-12-13 20:51:50,622 INFO L131 PetriNetUnfolder]: For 9410/9410 co-relation queries the response was YES. [2022-12-13 20:51:50,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394243 conditions, 192769 events. 130103/192769 cut-off events. For 9410/9410 co-relation queries the response was YES. Maximal size of possible extension queue 5204. Compared 1590896 event pairs, 54658 based on Foata normal form. 0/147371 useless extension candidates. Maximal degree in co-relation 394149. Up to 141027 conditions per place. [2022-12-13 20:51:51,346 INFO L137 encePairwiseOnDemand]: 342/362 looper letters, 102 selfloop transitions, 8 changer transitions 0/118 dead transitions. [2022-12-13 20:51:51,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 118 transitions, 532 flow [2022-12-13 20:51:51,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:51:51,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:51:51,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 618 transitions. [2022-12-13 20:51:51,349 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.569060773480663 [2022-12-13 20:51:51,349 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 618 transitions. [2022-12-13 20:51:51,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 618 transitions. [2022-12-13 20:51:51,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:51:51,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 618 transitions. [2022-12-13 20:51:51,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:51,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 362.0) internal successors, (1448), 4 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:51,352 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 362.0) internal successors, (1448), 4 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:51,352 INFO L175 Difference]: Start difference. First operand has 76 places, 70 transitions, 184 flow. Second operand 3 states and 618 transitions. [2022-12-13 20:51:51,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 118 transitions, 532 flow [2022-12-13 20:51:51,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 118 transitions, 529 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:51:51,366 INFO L231 Difference]: Finished difference. Result has 79 places, 77 transitions, 266 flow [2022-12-13 20:51:51,366 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=362, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=79, PETRI_TRANSITIONS=77} [2022-12-13 20:51:51,367 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 6 predicate places. [2022-12-13 20:51:51,367 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 77 transitions, 266 flow [2022-12-13 20:51:51,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:51,367 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:51:51,367 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 20:51:51,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 20:51:51,367 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 20:51:51,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:51:51,368 INFO L85 PathProgramCache]: Analyzing trace with hash -406900210, now seen corresponding path program 1 times [2022-12-13 20:51:51,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:51:51,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541578278] [2022-12-13 20:51:51,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:51:51,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:51:51,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:51,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:51:51,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:51:51,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541578278] [2022-12-13 20:51:51,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541578278] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:51:51,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:51:51,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:51:51,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824661382] [2022-12-13 20:51:51,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:51:51,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:51:51,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:51:51,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:51:51,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:51:51,404 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 362 [2022-12-13 20:51:51,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 77 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:51,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:51:51,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 362 [2022-12-13 20:51:51,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:52:02,278 INFO L130 PetriNetUnfolder]: 119645/179466 cut-off events. [2022-12-13 20:52:02,278 INFO L131 PetriNetUnfolder]: For 41117/41178 co-relation queries the response was YES. [2022-12-13 20:52:02,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422053 conditions, 179466 events. 119645/179466 cut-off events. For 41117/41178 co-relation queries the response was YES. Maximal size of possible extension queue 4839. Compared 1490407 event pairs, 111758 based on Foata normal form. 0/153082 useless extension candidates. Maximal degree in co-relation 113667. Up to 172541 conditions per place. [2022-12-13 20:52:03,029 INFO L137 encePairwiseOnDemand]: 360/362 looper letters, 65 selfloop transitions, 1 changer transitions 0/76 dead transitions. [2022-12-13 20:52:03,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 76 transitions, 394 flow [2022-12-13 20:52:03,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:52:03,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:52:03,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 567 transitions. [2022-12-13 20:52:03,031 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5220994475138122 [2022-12-13 20:52:03,031 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 567 transitions. [2022-12-13 20:52:03,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 567 transitions. [2022-12-13 20:52:03,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:52:03,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 567 transitions. [2022-12-13 20:52:03,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:52:03,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 362.0) internal successors, (1448), 4 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:52:03,034 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 362.0) internal successors, (1448), 4 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:52:03,034 INFO L175 Difference]: Start difference. First operand has 79 places, 77 transitions, 266 flow. Second operand 3 states and 567 transitions. [2022-12-13 20:52:03,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 76 transitions, 394 flow [2022-12-13 20:52:04,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 76 transitions, 378 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:52:04,663 INFO L231 Difference]: Finished difference. Result has 78 places, 76 transitions, 248 flow [2022-12-13 20:52:04,663 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=362, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=78, PETRI_TRANSITIONS=76} [2022-12-13 20:52:04,663 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 5 predicate places. [2022-12-13 20:52:04,663 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 76 transitions, 248 flow [2022-12-13 20:52:04,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:52:04,664 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:52:04,664 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 20:52:04,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 20:52:04,664 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 20:52:04,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:52:04,664 INFO L85 PathProgramCache]: Analyzing trace with hash -406900178, now seen corresponding path program 1 times [2022-12-13 20:52:04,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:52:04,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631690004] [2022-12-13 20:52:04,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:52:04,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:52:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:52:04,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:52:04,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:52:04,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631690004] [2022-12-13 20:52:04,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631690004] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:52:04,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:52:04,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:52:04,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508026524] [2022-12-13 20:52:04,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:52:04,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:52:04,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:52:04,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:52:04,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:52:04,692 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 362 [2022-12-13 20:52:04,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 76 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 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) [2022-12-13 20:52:04,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:52:04,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 362 [2022-12-13 20:52:04,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:52:13,569 INFO L130 PetriNetUnfolder]: 111491/165877 cut-off events. [2022-12-13 20:52:13,569 INFO L131 PetriNetUnfolder]: For 26319/26319 co-relation queries the response was YES. [2022-12-13 20:52:13,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381825 conditions, 165877 events. 111491/165877 cut-off events. For 26319/26319 co-relation queries the response was YES. Maximal size of possible extension queue 4519. Compared 1367522 event pairs, 45205 based on Foata normal form. 0/143749 useless extension candidates. Maximal degree in co-relation 381812. Up to 142739 conditions per place. [2022-12-13 20:52:14,245 INFO L137 encePairwiseOnDemand]: 358/362 looper letters, 103 selfloop transitions, 4 changer transitions 0/117 dead transitions. [2022-12-13 20:52:14,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 117 transitions, 580 flow [2022-12-13 20:52:14,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:52:14,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:52:14,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 603 transitions. [2022-12-13 20:52:14,247 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5552486187845304 [2022-12-13 20:52:14,248 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 603 transitions. [2022-12-13 20:52:14,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 603 transitions. [2022-12-13 20:52:14,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:52:14,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 603 transitions. [2022-12-13 20:52:14,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:52:14,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 362.0) internal successors, (1448), 4 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:52:14,251 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 362.0) internal successors, (1448), 4 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:52:14,251 INFO L175 Difference]: Start difference. First operand has 78 places, 76 transitions, 248 flow. Second operand 3 states and 603 transitions. [2022-12-13 20:52:14,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 117 transitions, 580 flow [2022-12-13 20:52:14,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 117 transitions, 579 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:52:14,260 INFO L231 Difference]: Finished difference. Result has 79 places, 76 transitions, 259 flow [2022-12-13 20:52:14,261 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=362, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=259, PETRI_PLACES=79, PETRI_TRANSITIONS=76} [2022-12-13 20:52:14,261 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 6 predicate places. [2022-12-13 20:52:14,261 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 76 transitions, 259 flow [2022-12-13 20:52:14,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 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) [2022-12-13 20:52:14,262 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:52:14,262 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:52:14,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 20:52:14,262 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 20:52:14,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:52:14,262 INFO L85 PathProgramCache]: Analyzing trace with hash 2131277610, now seen corresponding path program 1 times [2022-12-13 20:52:14,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:52:14,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418992794] [2022-12-13 20:52:14,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:52:14,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:52:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:52:14,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:52:14,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:52:14,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418992794] [2022-12-13 20:52:14,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418992794] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:52:14,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:52:14,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:52:14,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851557280] [2022-12-13 20:52:14,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:52:14,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:52:14,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:52:14,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:52:14,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:52:14,337 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 362 [2022-12-13 20:52:14,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 76 transitions, 259 flow. Second operand has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:52:14,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:52:14,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 362 [2022-12-13 20:52:14,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:52:26,524 INFO L130 PetriNetUnfolder]: 147613/220242 cut-off events. [2022-12-13 20:52:26,524 INFO L131 PetriNetUnfolder]: For 64648/65378 co-relation queries the response was YES. [2022-12-13 20:52:26,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522249 conditions, 220242 events. 147613/220242 cut-off events. For 64648/65378 co-relation queries the response was YES. Maximal size of possible extension queue 6355. Compared 1881171 event pairs, 32094 based on Foata normal form. 1814/198229 useless extension candidates. Maximal degree in co-relation 522234. Up to 100823 conditions per place. [2022-12-13 20:52:27,572 INFO L137 encePairwiseOnDemand]: 340/362 looper letters, 239 selfloop transitions, 39 changer transitions 0/286 dead transitions. [2022-12-13 20:52:27,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 286 transitions, 1478 flow [2022-12-13 20:52:27,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:52:27,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 20:52:27,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1418 transitions. [2022-12-13 20:52:27,575 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5595895816890292 [2022-12-13 20:52:27,575 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1418 transitions. [2022-12-13 20:52:27,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1418 transitions. [2022-12-13 20:52:27,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:52:27,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1418 transitions. [2022-12-13 20:52:27,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 202.57142857142858) internal successors, (1418), 7 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:52:27,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 362.0) internal successors, (2896), 8 states have internal predecessors, (2896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:52:27,581 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 362.0) internal successors, (2896), 8 states have internal predecessors, (2896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:52:27,581 INFO L175 Difference]: Start difference. First operand has 79 places, 76 transitions, 259 flow. Second operand 7 states and 1418 transitions. [2022-12-13 20:52:27,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 286 transitions, 1478 flow [2022-12-13 20:52:27,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 286 transitions, 1460 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:52:27,609 INFO L231 Difference]: Finished difference. Result has 90 places, 107 transitions, 597 flow [2022-12-13 20:52:27,609 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=362, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=597, PETRI_PLACES=90, PETRI_TRANSITIONS=107} [2022-12-13 20:52:27,610 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 17 predicate places. [2022-12-13 20:52:27,610 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 107 transitions, 597 flow [2022-12-13 20:52:27,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:52:27,610 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:52:27,611 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:52:27,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 20:52:27,611 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 20:52:27,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:52:27,611 INFO L85 PathProgramCache]: Analyzing trace with hash 2131277636, now seen corresponding path program 1 times [2022-12-13 20:52:27,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:52:27,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746125944] [2022-12-13 20:52:27,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:52:27,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:52:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:52:27,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:52:27,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:52:27,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746125944] [2022-12-13 20:52:27,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746125944] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:52:27,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:52:27,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:52:27,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304104299] [2022-12-13 20:52:27,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:52:27,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:52:27,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:52:27,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:52:27,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:52:27,678 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 362 [2022-12-13 20:52:27,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 107 transitions, 597 flow. Second operand has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:52:27,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:52:27,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 362 [2022-12-13 20:52:27,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:52:43,622 INFO L130 PetriNetUnfolder]: 151665/229867 cut-off events. [2022-12-13 20:52:43,623 INFO L131 PetriNetUnfolder]: For 288625/291413 co-relation queries the response was YES. [2022-12-13 20:52:44,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673683 conditions, 229867 events. 151665/229867 cut-off events. For 288625/291413 co-relation queries the response was YES. Maximal size of possible extension queue 6831. Compared 2030621 event pairs, 30048 based on Foata normal form. 7809/224575 useless extension candidates. Maximal degree in co-relation 673661. Up to 114577 conditions per place. [2022-12-13 20:52:45,131 INFO L137 encePairwiseOnDemand]: 340/362 looper letters, 259 selfloop transitions, 53 changer transitions 0/320 dead transitions. [2022-12-13 20:52:45,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 320 transitions, 2082 flow [2022-12-13 20:52:45,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:52:45,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 20:52:45,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1418 transitions. [2022-12-13 20:52:45,135 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5595895816890292 [2022-12-13 20:52:45,135 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1418 transitions. [2022-12-13 20:52:45,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1418 transitions. [2022-12-13 20:52:45,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:52:45,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1418 transitions. [2022-12-13 20:52:45,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 202.57142857142858) internal successors, (1418), 7 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:52:45,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 362.0) internal successors, (2896), 8 states have internal predecessors, (2896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:52:45,144 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 362.0) internal successors, (2896), 8 states have internal predecessors, (2896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:52:45,144 INFO L175 Difference]: Start difference. First operand has 90 places, 107 transitions, 597 flow. Second operand 7 states and 1418 transitions. [2022-12-13 20:52:45,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 320 transitions, 2082 flow [2022-12-13 20:52:47,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 320 transitions, 2082 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:52:47,137 INFO L231 Difference]: Finished difference. Result has 100 places, 142 transitions, 1157 flow [2022-12-13 20:52:47,137 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=362, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1157, PETRI_PLACES=100, PETRI_TRANSITIONS=142} [2022-12-13 20:52:47,137 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 27 predicate places. [2022-12-13 20:52:47,137 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 142 transitions, 1157 flow [2022-12-13 20:52:47,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:52:47,137 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:52:47,138 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 20:52:47,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 20:52:47,138 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 20:52:47,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:52:47,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1658848043, now seen corresponding path program 1 times [2022-12-13 20:52:47,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:52:47,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873841921] [2022-12-13 20:52:47,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:52:47,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:52:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:52:47,151 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:52:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:52:47,163 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:52:47,163 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:52:47,163 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-12-13 20:52:47,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-12-13 20:52:47,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-12-13 20:52:47,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-12-13 20:52:47,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-12-13 20:52:47,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-12-13 20:52:47,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-12-13 20:52:47,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-12-13 20:52:47,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-12-13 20:52:47,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-12-13 20:52:47,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-12-13 20:52:47,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-12-13 20:52:47,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-12-13 20:52:47,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-12-13 20:52:47,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-12-13 20:52:47,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-12-13 20:52:47,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-12-13 20:52:47,165 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-12-13 20:52:47,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-12-13 20:52:47,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-12-13 20:52:47,166 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-12-13 20:52:47,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 20:52:47,166 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:52:47,167 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 20:52:47,167 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-13 20:52:47,186 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 20:52:47,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 241 transitions, 526 flow [2022-12-13 20:52:47,257 INFO L130 PetriNetUnfolder]: 81/658 cut-off events. [2022-12-13 20:52:47,257 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 20:52:47,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 658 events. 81/658 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2556 event pairs, 6 based on Foata normal form. 0/523 useless extension candidates. Maximal degree in co-relation 443. Up to 32 conditions per place. [2022-12-13 20:52:47,262 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 241 transitions, 526 flow [2022-12-13 20:52:47,268 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 241 transitions, 526 flow [2022-12-13 20:52:47,268 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:52:47,268 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 241 transitions, 526 flow [2022-12-13 20:52:47,268 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 241 transitions, 526 flow [2022-12-13 20:52:47,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 241 transitions, 526 flow [2022-12-13 20:52:47,329 INFO L130 PetriNetUnfolder]: 81/658 cut-off events. [2022-12-13 20:52:47,330 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 20:52:47,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 658 events. 81/658 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2556 event pairs, 6 based on Foata normal form. 0/523 useless extension candidates. Maximal degree in co-relation 443. Up to 32 conditions per place. [2022-12-13 20:52:47,347 INFO L119 LiptonReduction]: Number of co-enabled transitions 32112 [2022-12-13 20:52:49,769 INFO L134 LiptonReduction]: Checked pairs total: 86949 [2022-12-13 20:52:49,769 INFO L136 LiptonReduction]: Total number of compositions: 182 [2022-12-13 20:52:49,770 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:52:49,770 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;@6355e309, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:52:49,770 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-12-13 20:52:49,771 INFO L130 PetriNetUnfolder]: 1/12 cut-off events. [2022-12-13 20:52:49,772 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:52:49,772 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:52:49,772 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:52:49,772 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 20:52:49,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:52:49,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1607125125, now seen corresponding path program 1 times [2022-12-13 20:52:49,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:52:49,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883127793] [2022-12-13 20:52:49,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:52:49,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:52:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:52:49,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:52:49,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:52:49,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883127793] [2022-12-13 20:52:49,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883127793] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:52:49,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:52:49,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:52:49,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353033341] [2022-12-13 20:52:49,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:52:49,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:52:49,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:52:49,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:52:49,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:52:49,797 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 423 [2022-12-13 20:52:49,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 112 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:52:49,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:52:49,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 423 [2022-12-13 20:52:49,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand