./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb0b2e6e-c9cf-4aab-97a9-92972a1928c6/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb0b2e6e-c9cf-4aab-97a9-92972a1928c6/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb0b2e6e-c9cf-4aab-97a9-92972a1928c6/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb0b2e6e-c9cf-4aab-97a9-92972a1928c6/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb0b2e6e-c9cf-4aab-97a9-92972a1928c6/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb0b2e6e-c9cf-4aab-97a9-92972a1928c6/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5ac72ff2379990464c5f55660be1e08b12557a61aceeef8401296ef66be035fc --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 16:46:36,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:46:36,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:46:36,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:46:36,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:46:36,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:46:36,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:46:36,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:46:36,873 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:46:36,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:46:36,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:46:36,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:46:36,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:46:36,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:46:36,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:46:36,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:46:36,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:46:36,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:46:36,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:46:36,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:46:36,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:46:36,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:46:36,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:46:36,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:46:36,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:46:36,922 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:46:36,922 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:46:36,923 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:46:36,924 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:46:36,925 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:46:36,926 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:46:36,927 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:46:36,929 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:46:36,929 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:46:36,932 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:46:36,932 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:46:36,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:46:36,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:46:36,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:46:36,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:46:36,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:46:36,938 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb0b2e6e-c9cf-4aab-97a9-92972a1928c6/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 16:46:36,977 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:46:36,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:46:36,978 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:46:36,978 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:46:36,979 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:46:36,979 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:46:36,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:46:36,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:46:36,980 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:46:36,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:46:36,981 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:46:36,982 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 16:46:36,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:46:36,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:46:36,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:46:36,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:46:36,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:46:36,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:46:36,983 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 16:46:36,983 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:46:36,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:46:36,984 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:46:36,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:46:36,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:46:36,984 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:46:36,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:46:36,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:46:36,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:46:36,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:46:36,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:46:36,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:46:36,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:46:36,987 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:46:36,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:46:36,987 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:46:36,987 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:46:36,988 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_eb0b2e6e-c9cf-4aab-97a9-92972a1928c6/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb0b2e6e-c9cf-4aab-97a9-92972a1928c6/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ac72ff2379990464c5f55660be1e08b12557a61aceeef8401296ef66be035fc [2022-11-25 16:46:37,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:46:37,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:46:37,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:46:37,304 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:46:37,305 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:46:37,306 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb0b2e6e-c9cf-4aab-97a9-92972a1928c6/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i [2022-11-25 16:46:40,302 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:46:40,715 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:46:40,716 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb0b2e6e-c9cf-4aab-97a9-92972a1928c6/sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i [2022-11-25 16:46:40,734 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb0b2e6e-c9cf-4aab-97a9-92972a1928c6/bin/uautomizer-ZsLfNo2U6R/data/f4ff538f5/c8c3ff696d064d1781f07d549cab1534/FLAG2e2ec9fba [2022-11-25 16:46:40,751 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb0b2e6e-c9cf-4aab-97a9-92972a1928c6/bin/uautomizer-ZsLfNo2U6R/data/f4ff538f5/c8c3ff696d064d1781f07d549cab1534 [2022-11-25 16:46:40,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:46:40,759 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:46:40,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:46:40,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:46:40,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:46:40,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:46:40" (1/1) ... [2022-11-25 16:46:40,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2ec980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:40, skipping insertion in model container [2022-11-25 16:46:40,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:46:40" (1/1) ... [2022-11-25 16:46:40,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:46:40,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:46:41,278 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_eb0b2e6e-c9cf-4aab-97a9-92972a1928c6/sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i[47038,47051] [2022-11-25 16:46:41,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:46:41,314 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:46:41,347 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_eb0b2e6e-c9cf-4aab-97a9-92972a1928c6/sv-benchmarks/c/goblint-regression/28-race_reach_79-equ_racefree.i[47038,47051] [2022-11-25 16:46:41,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:46:41,440 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:46:41,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:41 WrapperNode [2022-11-25 16:46:41,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:46:41,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:46:41,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:46:41,442 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:46:41,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:41" (1/1) ... [2022-11-25 16:46:41,479 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:41" (1/1) ... [2022-11-25 16:46:41,528 INFO L138 Inliner]: procedures = 271, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 217 [2022-11-25 16:46:41,530 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:46:41,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:46:41,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:46:41,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:46:41,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:41" (1/1) ... [2022-11-25 16:46:41,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:41" (1/1) ... [2022-11-25 16:46:41,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:41" (1/1) ... [2022-11-25 16:46:41,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:41" (1/1) ... [2022-11-25 16:46:41,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:41" (1/1) ... [2022-11-25 16:46:41,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:41" (1/1) ... [2022-11-25 16:46:41,586 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:41" (1/1) ... [2022-11-25 16:46:41,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:41" (1/1) ... [2022-11-25 16:46:41,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:46:41,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:46:41,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:46:41,601 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:46:41,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:41" (1/1) ... [2022-11-25 16:46:41,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:46:41,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb0b2e6e-c9cf-4aab-97a9-92972a1928c6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:46:41,638 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb0b2e6e-c9cf-4aab-97a9-92972a1928c6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:46:41,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb0b2e6e-c9cf-4aab-97a9-92972a1928c6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:46:41,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 16:46:41,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 16:46:41,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 16:46:41,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 16:46:41,684 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 16:46:41,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:46:41,684 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-25 16:46:41,685 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-25 16:46:41,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:46:41,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:46:41,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:46:41,687 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 16:46:41,891 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:46:41,893 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:46:42,389 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:46:42,404 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:46:42,405 INFO L300 CfgBuilder]: Removed 22 assume(true) statements. [2022-11-25 16:46:42,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:46:42 BoogieIcfgContainer [2022-11-25 16:46:42,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:46:42,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:46:42,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:46:42,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:46:42,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:46:40" (1/3) ... [2022-11-25 16:46:42,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ce7d83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:46:42, skipping insertion in model container [2022-11-25 16:46:42,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:46:41" (2/3) ... [2022-11-25 16:46:42,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ce7d83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:46:42, skipping insertion in model container [2022-11-25 16:46:42,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:46:42" (3/3) ... [2022-11-25 16:46:42,415 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_79-equ_racefree.i [2022-11-25 16:46:42,423 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 16:46:42,432 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:46:42,432 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-25 16:46:42,432 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 16:46:42,501 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-25 16:46:42,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 236 transitions, 480 flow [2022-11-25 16:46:42,667 INFO L130 PetriNetUnfolder]: 43/315 cut-off events. [2022-11-25 16:46:42,668 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 16:46:42,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 315 events. 43/315 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1027 event pairs, 0 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 153. Up to 8 conditions per place. [2022-11-25 16:46:42,676 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 236 transitions, 480 flow [2022-11-25 16:46:42,685 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 231 transitions, 470 flow [2022-11-25 16:46:42,689 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 16:46:42,717 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 231 transitions, 470 flow [2022-11-25 16:46:42,728 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 231 transitions, 470 flow [2022-11-25 16:46:42,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 231 transitions, 470 flow [2022-11-25 16:46:42,807 INFO L130 PetriNetUnfolder]: 41/310 cut-off events. [2022-11-25 16:46:42,808 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 16:46:42,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 310 events. 41/310 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1055 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 153. Up to 8 conditions per place. [2022-11-25 16:46:42,826 INFO L119 LiptonReduction]: Number of co-enabled transitions 11570 [2022-11-25 16:46:51,811 INFO L134 LiptonReduction]: Checked pairs total: 23204 [2022-11-25 16:46:51,812 INFO L136 LiptonReduction]: Total number of compositions: 226 [2022-11-25 16:46:51,828 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:46:51,834 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;@9c31629, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:46:51,835 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-25 16:46:51,836 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-11-25 16:46:51,836 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:46:51,837 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:51,837 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 16:46:51,838 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 16:46:51,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:51,843 INFO L85 PathProgramCache]: Analyzing trace with hash 908, now seen corresponding path program 1 times [2022-11-25 16:46:51,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:51,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202751984] [2022-11-25 16:46:51,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:51,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:51,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:46:51,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:51,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202751984] [2022-11-25 16:46:51,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202751984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:46:51,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:46:51,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 16:46:51,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271051578] [2022-11-25 16:46:51,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:46:51,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 16:46:51,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:51,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 16:46:51,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 16:46:51,995 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 462 [2022-11-25 16:46:51,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 82 transitions, 172 flow. Second operand has 2 states, 2 states have (on average 208.5) internal successors, (417), 2 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:51,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:51,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 462 [2022-11-25 16:46:51,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:52,179 INFO L130 PetriNetUnfolder]: 477/1042 cut-off events. [2022-11-25 16:46:52,179 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 16:46:52,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2000 conditions, 1042 events. 477/1042 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5888 event pairs, 432 based on Foata normal form. 156/903 useless extension candidates. Maximal degree in co-relation 1937. Up to 952 conditions per place. [2022-11-25 16:46:52,187 INFO L137 encePairwiseOnDemand]: 435/462 looper letters, 47 selfloop transitions, 0 changer transitions 0/55 dead transitions. [2022-11-25 16:46:52,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 55 transitions, 212 flow [2022-11-25 16:46:52,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 16:46:52,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 16:46:52,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 490 transitions. [2022-11-25 16:46:52,202 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303 [2022-11-25 16:46:52,203 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 490 transitions. [2022-11-25 16:46:52,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 490 transitions. [2022-11-25 16:46:52,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:52,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 490 transitions. [2022-11-25 16:46:52,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 245.0) internal successors, (490), 2 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:52,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 462.0) internal successors, (1386), 3 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:52,220 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 462.0) internal successors, (1386), 3 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:52,222 INFO L175 Difference]: Start difference. First operand has 61 places, 82 transitions, 172 flow. Second operand 2 states and 490 transitions. [2022-11-25 16:46:52,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 55 transitions, 212 flow [2022-11-25 16:46:52,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 55 transitions, 212 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 16:46:52,228 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 118 flow [2022-11-25 16:46:52,230 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=118, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2022-11-25 16:46:52,234 INFO L288 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2022-11-25 16:46:52,234 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 118 flow [2022-11-25 16:46:52,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 208.5) internal successors, (417), 2 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:52,235 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:52,235 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 16:46:52,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 16:46:52,235 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 16:46:52,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:52,236 INFO L85 PathProgramCache]: Analyzing trace with hash 27780447, now seen corresponding path program 1 times [2022-11-25 16:46:52,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:52,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178734611] [2022-11-25 16:46:52,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:52,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:52,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:46:52,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:52,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178734611] [2022-11-25 16:46:52,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178734611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:46:52,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:46:52,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:46:52,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44117262] [2022-11-25 16:46:52,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:46:52,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:46:52,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:52,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:46:52,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:46:52,492 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 462 [2022-11-25 16:46:52,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:52,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:52,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 462 [2022-11-25 16:46:52,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:52,685 INFO L130 PetriNetUnfolder]: 436/945 cut-off events. [2022-11-25 16:46:52,685 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 16:46:52,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1828 conditions, 945 events. 436/945 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5770 event pairs, 36 based on Foata normal form. 0/690 useless extension candidates. Maximal degree in co-relation 1824. Up to 781 conditions per place. [2022-11-25 16:46:52,691 INFO L137 encePairwiseOnDemand]: 457/462 looper letters, 62 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2022-11-25 16:46:52,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 73 transitions, 284 flow [2022-11-25 16:46:52,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:46:52,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:46:52,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 676 transitions. [2022-11-25 16:46:52,695 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48773448773448774 [2022-11-25 16:46:52,696 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 676 transitions. [2022-11-25 16:46:52,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 676 transitions. [2022-11-25 16:46:52,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:52,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 676 transitions. [2022-11-25 16:46:52,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:52,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:52,704 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:52,704 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 118 flow. Second operand 3 states and 676 transitions. [2022-11-25 16:46:52,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 73 transitions, 284 flow [2022-11-25 16:46:52,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 73 transitions, 284 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 16:46:52,707 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 134 flow [2022-11-25 16:46:52,707 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2022-11-25 16:46:52,708 INFO L288 CegarLoopForPetriNet]: 61 programPoint places, -1 predicate places. [2022-11-25 16:46:52,708 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 134 flow [2022-11-25 16:46:52,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:52,709 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:52,709 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 16:46:52,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 16:46:52,710 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 16:46:52,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:52,710 INFO L85 PathProgramCache]: Analyzing trace with hash 27780415, now seen corresponding path program 1 times [2022-11-25 16:46:52,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:52,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802529043] [2022-11-25 16:46:52,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:52,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:46:52,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:46:52,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:46:52,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802529043] [2022-11-25 16:46:52,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802529043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:46:52,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:46:52,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:46:52,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134774808] [2022-11-25 16:46:52,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:46:52,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:46:52,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:46:52,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:46:52,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:46:52,856 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 462 [2022-11-25 16:46:52,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:52,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:46:52,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 462 [2022-11-25 16:46:52,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:46:53,063 INFO L130 PetriNetUnfolder]: 416/918 cut-off events. [2022-11-25 16:46:53,063 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2022-11-25 16:46:53,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1882 conditions, 918 events. 416/918 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5758 event pairs, 0 based on Foata normal form. 19/724 useless extension candidates. Maximal degree in co-relation 1876. Up to 818 conditions per place. [2022-11-25 16:46:53,105 INFO L137 encePairwiseOnDemand]: 459/462 looper letters, 62 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2022-11-25 16:46:53,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 72 transitions, 296 flow [2022-11-25 16:46:53,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:46:53,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:46:53,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 677 transitions. [2022-11-25 16:46:53,108 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4884559884559885 [2022-11-25 16:46:53,108 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 677 transitions. [2022-11-25 16:46:53,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 677 transitions. [2022-11-25 16:46:53,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:46:53,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 677 transitions. [2022-11-25 16:46:53,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:53,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:53,115 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:53,115 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 134 flow. Second operand 3 states and 677 transitions. [2022-11-25 16:46:53,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 72 transitions, 296 flow [2022-11-25 16:46:53,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 72 transitions, 290 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 16:46:53,119 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 130 flow [2022-11-25 16:46:53,119 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2022-11-25 16:46:53,120 INFO L288 CegarLoopForPetriNet]: 61 programPoint places, -2 predicate places. [2022-11-25 16:46:53,120 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 130 flow [2022-11-25 16:46:53,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:46:53,121 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:46:53,121 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-11-25 16:46:53,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 16:46:53,121 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 16:46:53,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:46:53,122 INFO L85 PathProgramCache]: Analyzing trace with hash 927264876, now seen corresponding path program 1 times [2022-11-25 16:46:53,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:46:53,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139166622] [2022-11-25 16:46:53,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:46:53,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:46:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:46:53,151 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 16:46:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:46:53,205 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 16:46:53,206 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 16:46:53,207 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-25 16:46:53,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-25 16:46:53,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-25 16:46:53,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-25 16:46:53,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-25 16:46:53,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-25 16:46:53,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-25 16:46:53,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-25 16:46:53,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-25 16:46:53,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-25 16:46:53,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-25 16:46:53,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-25 16:46:53,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-25 16:46:53,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-25 16:46:53,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-25 16:46:53,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-25 16:46:53,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-25 16:46:53,218 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-25 16:46:53,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-25 16:46:53,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-25 16:46:53,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-25 16:46:53,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 16:46:53,220 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-25 16:46:53,223 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 16:46:53,223 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 16:46:53,260 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 16:46:53,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 303 transitions, 624 flow [2022-11-25 16:46:53,337 INFO L130 PetriNetUnfolder]: 72/498 cut-off events. [2022-11-25 16:46:53,337 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 16:46:53,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 498 events. 72/498 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1960 event pairs, 0 based on Foata normal form. 0/388 useless extension candidates. Maximal degree in co-relation 317. Up to 12 conditions per place. [2022-11-25 16:46:53,343 INFO L82 GeneralOperation]: Start removeDead. Operand has 266 places, 303 transitions, 624 flow [2022-11-25 16:46:53,348 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 265 places, 301 transitions, 620 flow [2022-11-25 16:46:53,348 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 16:46:53,349 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 265 places, 301 transitions, 620 flow [2022-11-25 16:46:53,349 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 265 places, 301 transitions, 620 flow [2022-11-25 16:46:53,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 301 transitions, 620 flow [2022-11-25 16:46:53,421 INFO L130 PetriNetUnfolder]: 71/496 cut-off events. [2022-11-25 16:46:53,422 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 16:46:53,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 510 conditions, 496 events. 71/496 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2010 event pairs, 0 based on Foata normal form. 0/387 useless extension candidates. Maximal degree in co-relation 315. Up to 12 conditions per place. [2022-11-25 16:46:53,445 INFO L119 LiptonReduction]: Number of co-enabled transitions 34060 [2022-11-25 16:47:05,758 INFO L134 LiptonReduction]: Checked pairs total: 84944 [2022-11-25 16:47:05,759 INFO L136 LiptonReduction]: Total number of compositions: 305 [2022-11-25 16:47:05,761 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:47:05,762 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;@9c31629, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:47:05,762 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-25 16:47:05,763 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-11-25 16:47:05,763 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:47:05,764 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:47:05,764 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 16:47:05,764 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 16:47:05,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:47:05,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1575, now seen corresponding path program 1 times [2022-11-25 16:47:05,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:47:05,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216851045] [2022-11-25 16:47:05,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:47:05,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:47:05,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:05,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:47:05,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:47:05,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216851045] [2022-11-25 16:47:05,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216851045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:47:05,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:47:05,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 16:47:05,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037826453] [2022-11-25 16:47:05,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:47:05,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 16:47:05,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:47:05,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 16:47:05,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 16:47:05,775 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 608 [2022-11-25 16:47:05,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 117 transitions, 252 flow. Second operand has 2 states, 2 states have (on average 261.5) internal successors, (523), 2 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:05,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:47:05,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 608 [2022-11-25 16:47:05,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:47:08,684 INFO L130 PetriNetUnfolder]: 18399/29057 cut-off events. [2022-11-25 16:47:08,685 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2022-11-25 16:47:08,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56172 conditions, 29057 events. 18399/29057 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 1096. Compared 216697 event pairs, 17082 based on Foata normal form. 4073/25087 useless extension candidates. Maximal degree in co-relation 23526. Up to 27001 conditions per place. [2022-11-25 16:47:08,863 INFO L137 encePairwiseOnDemand]: 572/608 looper letters, 68 selfloop transitions, 0 changer transitions 0/81 dead transitions. [2022-11-25 16:47:08,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 81 transitions, 316 flow [2022-11-25 16:47:08,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 16:47:08,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 16:47:08,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 626 transitions. [2022-11-25 16:47:08,866 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5148026315789473 [2022-11-25 16:47:08,867 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 626 transitions. [2022-11-25 16:47:08,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 626 transitions. [2022-11-25 16:47:08,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:47:08,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 626 transitions. [2022-11-25 16:47:08,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 313.0) internal successors, (626), 2 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:08,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 608.0) internal successors, (1824), 3 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:08,873 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 608.0) internal successors, (1824), 3 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:08,874 INFO L175 Difference]: Start difference. First operand has 85 places, 117 transitions, 252 flow. Second operand 2 states and 626 transitions. [2022-11-25 16:47:08,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 81 transitions, 316 flow [2022-11-25 16:47:08,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 81 transitions, 316 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 16:47:08,878 INFO L231 Difference]: Finished difference. Result has 82 places, 81 transitions, 180 flow [2022-11-25 16:47:08,879 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=608, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=180, PETRI_PLACES=82, PETRI_TRANSITIONS=81} [2022-11-25 16:47:08,881 INFO L288 CegarLoopForPetriNet]: 85 programPoint places, -3 predicate places. [2022-11-25 16:47:08,881 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 180 flow [2022-11-25 16:47:08,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 261.5) internal successors, (523), 2 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:08,883 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:47:08,883 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 16:47:08,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 16:47:08,884 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 16:47:08,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:47:08,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1506748993, now seen corresponding path program 1 times [2022-11-25 16:47:08,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:47:08,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909562574] [2022-11-25 16:47:08,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:47:08,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:47:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:09,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:47:09,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:47:09,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909562574] [2022-11-25 16:47:09,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909562574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:47:09,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:47:09,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:47:09,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616997756] [2022-11-25 16:47:09,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:47:09,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:47:09,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:47:09,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:47:09,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:47:09,027 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 608 [2022-11-25 16:47:09,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:09,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:47:09,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 608 [2022-11-25 16:47:09,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:47:11,554 INFO L130 PetriNetUnfolder]: 17699/27960 cut-off events. [2022-11-25 16:47:11,554 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2022-11-25 16:47:11,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54052 conditions, 27960 events. 17699/27960 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 1041. Compared 206566 event pairs, 16418 based on Foata normal form. 0/20454 useless extension candidates. Maximal degree in co-relation 54047. Up to 25976 conditions per place. [2022-11-25 16:47:11,795 INFO L137 encePairwiseOnDemand]: 606/608 looper letters, 66 selfloop transitions, 1 changer transitions 0/80 dead transitions. [2022-11-25 16:47:11,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 80 transitions, 312 flow [2022-11-25 16:47:11,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:47:11,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:47:11,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 839 transitions. [2022-11-25 16:47:11,799 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45997807017543857 [2022-11-25 16:47:11,799 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 839 transitions. [2022-11-25 16:47:11,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 839 transitions. [2022-11-25 16:47:11,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:47:11,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 839 transitions. [2022-11-25 16:47:11,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 279.6666666666667) internal successors, (839), 3 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:11,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 608.0) internal successors, (2432), 4 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:11,807 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 608.0) internal successors, (2432), 4 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:11,807 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 180 flow. Second operand 3 states and 839 transitions. [2022-11-25 16:47:11,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 80 transitions, 312 flow [2022-11-25 16:47:11,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 80 transitions, 312 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 16:47:11,815 INFO L231 Difference]: Finished difference. Result has 83 places, 80 transitions, 180 flow [2022-11-25 16:47:11,816 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=608, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=83, PETRI_TRANSITIONS=80} [2022-11-25 16:47:11,820 INFO L288 CegarLoopForPetriNet]: 85 programPoint places, -2 predicate places. [2022-11-25 16:47:11,822 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 80 transitions, 180 flow [2022-11-25 16:47:11,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:11,823 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:47:11,823 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 16:47:11,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 16:47:11,824 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 16:47:11,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:47:11,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1506749068, now seen corresponding path program 1 times [2022-11-25 16:47:11,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:47:11,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465624789] [2022-11-25 16:47:11,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:47:11,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:47:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:11,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:47:11,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:47:11,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465624789] [2022-11-25 16:47:11,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465624789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:47:11,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:47:11,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:47:11,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326131456] [2022-11-25 16:47:11,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:47:11,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:47:11,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:47:11,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:47:11,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:47:11,895 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 608 [2022-11-25 16:47:11,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 80 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:11,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:47:11,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 608 [2022-11-25 16:47:11,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:47:13,826 INFO L130 PetriNetUnfolder]: 16205/25870 cut-off events. [2022-11-25 16:47:13,826 INFO L131 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2022-11-25 16:47:13,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50577 conditions, 25870 events. 16205/25870 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 1007. Compared 201832 event pairs, 987 based on Foata normal form. 0/19117 useless extension candidates. Maximal degree in co-relation 50571. Up to 22881 conditions per place. [2022-11-25 16:47:13,942 INFO L137 encePairwiseOnDemand]: 603/608 looper letters, 99 selfloop transitions, 3 changer transitions 0/115 dead transitions. [2022-11-25 16:47:13,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 115 transitions, 454 flow [2022-11-25 16:47:13,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:47:13,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:47:13,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 872 transitions. [2022-11-25 16:47:13,951 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4780701754385965 [2022-11-25 16:47:13,951 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 872 transitions. [2022-11-25 16:47:13,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 872 transitions. [2022-11-25 16:47:13,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:47:13,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 872 transitions. [2022-11-25 16:47:13,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:13,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 608.0) internal successors, (2432), 4 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:13,971 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 608.0) internal successors, (2432), 4 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:13,971 INFO L175 Difference]: Start difference. First operand has 83 places, 80 transitions, 180 flow. Second operand 3 states and 872 transitions. [2022-11-25 16:47:13,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 115 transitions, 454 flow [2022-11-25 16:47:13,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 115 transitions, 453 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:47:13,978 INFO L231 Difference]: Finished difference. Result has 85 places, 80 transitions, 195 flow [2022-11-25 16:47:13,978 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=608, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=195, PETRI_PLACES=85, PETRI_TRANSITIONS=80} [2022-11-25 16:47:13,980 INFO L288 CegarLoopForPetriNet]: 85 programPoint places, 0 predicate places. [2022-11-25 16:47:13,980 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 80 transitions, 195 flow [2022-11-25 16:47:13,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:13,981 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:47:13,981 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:47:13,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 16:47:13,981 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 16:47:13,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:47:13,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1165464648, now seen corresponding path program 1 times [2022-11-25 16:47:13,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:47:13,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196941325] [2022-11-25 16:47:13,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:47:13,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:47:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:14,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:47:14,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:47:14,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196941325] [2022-11-25 16:47:14,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196941325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:47:14,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:47:14,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:47:14,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661538666] [2022-11-25 16:47:14,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:47:14,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:47:14,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:47:14,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:47:14,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:47:14,451 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 608 [2022-11-25 16:47:14,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 195 flow. Second operand has 4 states, 4 states have (on average 250.5) internal successors, (1002), 4 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:14,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:47:14,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 608 [2022-11-25 16:47:14,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:47:16,725 INFO L130 PetriNetUnfolder]: 18071/29331 cut-off events. [2022-11-25 16:47:16,726 INFO L131 PetriNetUnfolder]: For 2673/2673 co-relation queries the response was YES. [2022-11-25 16:47:16,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59003 conditions, 29331 events. 18071/29331 cut-off events. For 2673/2673 co-relation queries the response was YES. Maximal size of possible extension queue 1173. Compared 226023 event pairs, 6369 based on Foata normal form. 0/22988 useless extension candidates. Maximal degree in co-relation 58996. Up to 20813 conditions per place. [2022-11-25 16:47:16,880 INFO L137 encePairwiseOnDemand]: 593/608 looper letters, 147 selfloop transitions, 12 changer transitions 0/172 dead transitions. [2022-11-25 16:47:16,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 172 transitions, 734 flow [2022-11-25 16:47:16,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:47:16,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 16:47:16,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1164 transitions. [2022-11-25 16:47:16,886 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4786184210526316 [2022-11-25 16:47:16,886 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1164 transitions. [2022-11-25 16:47:16,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1164 transitions. [2022-11-25 16:47:16,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:47:16,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1164 transitions. [2022-11-25 16:47:16,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:16,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 608.0) internal successors, (3040), 5 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:16,900 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 608.0) internal successors, (3040), 5 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:16,901 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 195 flow. Second operand 4 states and 1164 transitions. [2022-11-25 16:47:16,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 172 transitions, 734 flow [2022-11-25 16:47:16,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 172 transitions, 720 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 16:47:16,913 INFO L231 Difference]: Finished difference. Result has 89 places, 91 transitions, 297 flow [2022-11-25 16:47:16,913 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=608, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=297, PETRI_PLACES=89, PETRI_TRANSITIONS=91} [2022-11-25 16:47:16,914 INFO L288 CegarLoopForPetriNet]: 85 programPoint places, 4 predicate places. [2022-11-25 16:47:16,915 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 91 transitions, 297 flow [2022-11-25 16:47:16,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 250.5) internal successors, (1002), 4 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:16,915 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:47:16,916 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:47:16,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 16:47:16,916 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 16:47:16,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:47:16,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1576291451, now seen corresponding path program 1 times [2022-11-25 16:47:16,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:47:16,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297461853] [2022-11-25 16:47:16,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:47:16,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:47:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:17,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:47:17,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:47:17,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297461853] [2022-11-25 16:47:17,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297461853] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:47:17,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128116939] [2022-11-25 16:47:17,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:47:17,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:47:17,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb0b2e6e-c9cf-4aab-97a9-92972a1928c6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:47:17,014 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb0b2e6e-c9cf-4aab-97a9-92972a1928c6/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:47:17,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb0b2e6e-c9cf-4aab-97a9-92972a1928c6/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 16:47:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:17,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 16:47:17,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:47:17,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:47:17,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:47:17,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:47:17,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128116939] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:47:17,656 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:47:17,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-25 16:47:17,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47317175] [2022-11-25 16:47:17,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:47:17,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:47:17,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:47:17,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:47:17,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:47:17,683 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 608 [2022-11-25 16:47:17,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 91 transitions, 297 flow. Second operand has 7 states, 7 states have (on average 258.42857142857144) internal successors, (1809), 7 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:17,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:47:17,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 608 [2022-11-25 16:47:17,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:47:18,260 INFO L130 PetriNetUnfolder]: 1649/3130 cut-off events. [2022-11-25 16:47:18,260 INFO L131 PetriNetUnfolder]: For 1166/1166 co-relation queries the response was YES. [2022-11-25 16:47:18,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8307 conditions, 3130 events. 1649/3130 cut-off events. For 1166/1166 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 21433 event pairs, 26 based on Foata normal form. 363/3223 useless extension candidates. Maximal degree in co-relation 8298. Up to 1984 conditions per place. [2022-11-25 16:47:18,285 INFO L137 encePairwiseOnDemand]: 605/608 looper letters, 99 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2022-11-25 16:47:18,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 111 transitions, 559 flow [2022-11-25 16:47:18,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:47:18,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 16:47:18,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1375 transitions. [2022-11-25 16:47:18,291 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45230263157894735 [2022-11-25 16:47:18,291 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1375 transitions. [2022-11-25 16:47:18,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1375 transitions. [2022-11-25 16:47:18,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:47:18,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1375 transitions. [2022-11-25 16:47:18,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 275.0) internal successors, (1375), 5 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:18,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 608.0) internal successors, (3648), 6 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:18,304 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 608.0) internal successors, (3648), 6 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:18,304 INFO L175 Difference]: Start difference. First operand has 89 places, 91 transitions, 297 flow. Second operand 5 states and 1375 transitions. [2022-11-25 16:47:18,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 111 transitions, 559 flow [2022-11-25 16:47:18,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 111 transitions, 557 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-25 16:47:18,310 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 195 flow [2022-11-25 16:47:18,310 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=608, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2022-11-25 16:47:18,312 INFO L288 CegarLoopForPetriNet]: 85 programPoint places, -19 predicate places. [2022-11-25 16:47:18,312 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 195 flow [2022-11-25 16:47:18,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 258.42857142857144) internal successors, (1809), 7 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:18,313 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:47:18,313 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-25 16:47:18,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb0b2e6e-c9cf-4aab-97a9-92972a1928c6/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 16:47:18,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb0b2e6e-c9cf-4aab-97a9-92972a1928c6/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:47:18,519 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-25 16:47:18,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:47:18,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1027944367, now seen corresponding path program 1 times [2022-11-25 16:47:18,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:47:18,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401733611] [2022-11-25 16:47:18,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:47:18,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:47:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:47:18,558 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 16:47:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:47:18,575 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 16:47:18,576 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 16:47:18,576 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-11-25 16:47:18,576 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2022-11-25 16:47:18,576 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2022-11-25 16:47:18,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2022-11-25 16:47:18,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2022-11-25 16:47:18,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2022-11-25 16:47:18,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2022-11-25 16:47:18,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2022-11-25 16:47:18,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2022-11-25 16:47:18,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2022-11-25 16:47:18,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2022-11-25 16:47:18,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2022-11-25 16:47:18,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2022-11-25 16:47:18,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2022-11-25 16:47:18,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2022-11-25 16:47:18,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2022-11-25 16:47:18,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2022-11-25 16:47:18,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2022-11-25 16:47:18,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2022-11-25 16:47:18,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2022-11-25 16:47:18,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2022-11-25 16:47:18,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2022-11-25 16:47:18,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2022-11-25 16:47:18,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2022-11-25 16:47:18,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2022-11-25 16:47:18,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 16:47:18,582 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-25 16:47:18,583 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 16:47:18,583 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-25 16:47:18,754 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 16:47:18,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 322 places, 370 transitions, 770 flow [2022-11-25 16:47:18,884 INFO L130 PetriNetUnfolder]: 106/722 cut-off events. [2022-11-25 16:47:18,885 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-25 16:47:18,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 722 events. 106/722 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3161 event pairs, 1 based on Foata normal form. 0/560 useless extension candidates. Maximal degree in co-relation 506. Up to 16 conditions per place. [2022-11-25 16:47:18,897 INFO L82 GeneralOperation]: Start removeDead. Operand has 322 places, 370 transitions, 770 flow [2022-11-25 16:47:18,907 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 321 places, 368 transitions, 766 flow [2022-11-25 16:47:18,907 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 16:47:18,908 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 321 places, 368 transitions, 766 flow [2022-11-25 16:47:18,908 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 321 places, 368 transitions, 766 flow [2022-11-25 16:47:18,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 321 places, 368 transitions, 766 flow [2022-11-25 16:47:19,021 INFO L130 PetriNetUnfolder]: 105/720 cut-off events. [2022-11-25 16:47:19,021 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-25 16:47:19,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 748 conditions, 720 events. 105/720 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3219 event pairs, 1 based on Foata normal form. 0/559 useless extension candidates. Maximal degree in co-relation 504. Up to 16 conditions per place. [2022-11-25 16:47:19,065 INFO L119 LiptonReduction]: Number of co-enabled transitions 64350 [2022-11-25 16:47:29,220 INFO L134 LiptonReduction]: Checked pairs total: 133711 [2022-11-25 16:47:29,220 INFO L136 LiptonReduction]: Total number of compositions: 348 [2022-11-25 16:47:29,222 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:47:29,223 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;@9c31629, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:47:29,223 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-11-25 16:47:29,225 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-11-25 16:47:29,225 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:47:29,225 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:47:29,225 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 16:47:29,225 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-25 16:47:29,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:47:29,226 INFO L85 PathProgramCache]: Analyzing trace with hash 2366, now seen corresponding path program 1 times [2022-11-25 16:47:29,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:47:29,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252733127] [2022-11-25 16:47:29,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:47:29,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:47:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:29,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:47:29,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:47:29,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252733127] [2022-11-25 16:47:29,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252733127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:47:29,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:47:29,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 16:47:29,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672532635] [2022-11-25 16:47:29,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:47:29,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 16:47:29,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:47:29,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 16:47:29,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 16:47:29,235 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 718 [2022-11-25 16:47:29,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 150 transitions, 330 flow. Second operand has 2 states, 2 states have (on average 314.5) internal successors, (629), 2 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:47:29,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:47:29,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 718 [2022-11-25 16:47:29,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand