./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 11:27:23,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:27:23,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:27:23,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:27:23,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:27:23,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:27:23,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:27:23,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:27:23,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:27:23,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:27:23,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:27:23,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:27:23,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:27:23,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:27:23,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:27:23,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:27:23,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:27:23,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:27:23,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:27:23,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:27:23,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:27:23,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:27:23,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:27:23,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:27:23,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:27:23,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:27:23,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:27:23,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:27:23,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:27:23,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:27:23,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:27:23,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:27:23,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:27:23,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:27:23,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:27:23,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:27:23,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:27:23,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:27:23,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:27:23,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:27:23,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:27:23,077 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 11:27:23,091 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:27:23,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:27:23,091 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:27:23,091 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:27:23,092 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:27:23,092 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:27:23,092 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:27:23,093 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:27:23,093 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:27:23,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:27:23,093 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:27:23,093 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 11:27:23,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:27:23,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:27:23,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:27:23,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:27:23,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:27:23,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:27:23,094 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 11:27:23,094 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:27:23,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:27:23,094 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:27:23,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:27:23,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:27:23,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:27:23,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:27:23,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:27:23,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:27:23,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:27:23,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:27:23,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:27:23,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:27:23,096 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:27:23,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:27:23,096 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:27:23,096 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:27:23,096 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:27:23,096 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_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d [2022-12-13 11:27:23,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:27:23,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:27:23,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:27:23,279 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:27:23,279 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:27:23,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2022-12-13 11:27:25,843 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:27:25,997 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:27:25,997 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2022-12-13 11:27:26,002 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/data/ae158a6b7/f43938500f5b4f1f90345b398fcd96f1/FLAG8bc2b8068 [2022-12-13 11:27:26,395 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/data/ae158a6b7/f43938500f5b4f1f90345b398fcd96f1 [2022-12-13 11:27:26,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:27:26,399 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:27:26,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:27:26,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:27:26,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:27:26,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:27:26" (1/1) ... [2022-12-13 11:27:26,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fa97272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:27:26, skipping insertion in model container [2022-12-13 11:27:26,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:27:26" (1/1) ... [2022-12-13 11:27:26,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:27:26,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:27:26,545 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_69c68cbf-53f2-4eac-b3ab-954554c5869a/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c[4788,4801] [2022-12-13 11:27:26,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:27:26,556 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:27:26,576 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_69c68cbf-53f2-4eac-b3ab-954554c5869a/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c[4788,4801] [2022-12-13 11:27:26,578 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:27:26,589 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:27:26,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:27:26 WrapperNode [2022-12-13 11:27:26,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:27:26,590 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:27:26,590 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:27:26,590 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:27:26,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:27:26" (1/1) ... [2022-12-13 11:27:26,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:27:26" (1/1) ... [2022-12-13 11:27:26,622 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 347 [2022-12-13 11:27:26,622 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:27:26,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:27:26,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:27:26,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:27:26,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:27:26" (1/1) ... [2022-12-13 11:27:26,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:27:26" (1/1) ... [2022-12-13 11:27:26,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:27:26" (1/1) ... [2022-12-13 11:27:26,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:27:26" (1/1) ... [2022-12-13 11:27:26,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:27:26" (1/1) ... [2022-12-13 11:27:26,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:27:26" (1/1) ... [2022-12-13 11:27:26,643 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:27:26" (1/1) ... [2022-12-13 11:27:26,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:27:26" (1/1) ... [2022-12-13 11:27:26,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:27:26,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:27:26,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:27:26,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:27:26,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:27:26" (1/1) ... [2022-12-13 11:27:26,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:27:26,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:27:26,671 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:27:26,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:27:26,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:27:26,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:27:26,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 11:27:26,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 11:27:26,701 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 11:27:26,701 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 11:27:26,701 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 11:27:26,701 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 11:27:26,701 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 11:27:26,701 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 11:27:26,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:27:26,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 11:27:26,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:27:26,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:27:26,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:27:26,703 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 11:27:26,791 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:27:26,793 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:27:27,202 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:27:27,213 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:27:27,213 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 11:27:27,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:27:27 BoogieIcfgContainer [2022-12-13 11:27:27,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:27:27,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:27:27,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:27:27,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:27:27,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:27:26" (1/3) ... [2022-12-13 11:27:27,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e87eada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:27:27, skipping insertion in model container [2022-12-13 11:27:27,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:27:26" (2/3) ... [2022-12-13 11:27:27,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e87eada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:27:27, skipping insertion in model container [2022-12-13 11:27:27,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:27:27" (3/3) ... [2022-12-13 11:27:27,222 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-trans.wvr.c [2022-12-13 11:27:27,228 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 11:27:27,236 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:27:27,236 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-12-13 11:27:27,237 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 11:27:27,343 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 11:27:27,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 434 places, 456 transitions, 936 flow [2022-12-13 11:27:27,503 INFO L130 PetriNetUnfolder]: 32/453 cut-off events. [2022-12-13 11:27:27,504 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 11:27:27,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 453 events. 32/453 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1303 event pairs, 0 based on Foata normal form. 0/395 useless extension candidates. Maximal degree in co-relation 330. Up to 2 conditions per place. [2022-12-13 11:27:27,513 INFO L82 GeneralOperation]: Start removeDead. Operand has 434 places, 456 transitions, 936 flow [2022-12-13 11:27:27,520 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 411 places, 432 transitions, 879 flow [2022-12-13 11:27:27,523 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:27:27,530 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 411 places, 432 transitions, 879 flow [2022-12-13 11:27:27,532 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 411 places, 432 transitions, 879 flow [2022-12-13 11:27:27,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 411 places, 432 transitions, 879 flow [2022-12-13 11:27:27,616 INFO L130 PetriNetUnfolder]: 31/432 cut-off events. [2022-12-13 11:27:27,616 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 11:27:27,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 444 conditions, 432 events. 31/432 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1301 event pairs, 0 based on Foata normal form. 0/375 useless extension candidates. Maximal degree in co-relation 330. Up to 2 conditions per place. [2022-12-13 11:27:27,647 INFO L119 LiptonReduction]: Number of co-enabled transitions 62208 [2022-12-13 11:27:45,505 INFO L134 LiptonReduction]: Checked pairs total: 57673 [2022-12-13 11:27:45,505 INFO L136 LiptonReduction]: Total number of compositions: 560 [2022-12-13 11:27:45,515 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:27:45,519 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;@1938e5d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:27:45,519 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2022-12-13 11:27:45,521 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 11:27:45,521 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:27:45,521 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:27:45,522 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 11:27:45,522 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 11:27:45,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:27:45,526 INFO L85 PathProgramCache]: Analyzing trace with hash 61423, now seen corresponding path program 1 times [2022-12-13 11:27:45,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:27:45,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886107023] [2022-12-13 11:27:45,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:27:45,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:27:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:27:45,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:27:45,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:27:45,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886107023] [2022-12-13 11:27:45,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886107023] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:27:45,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:27:45,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:27:45,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960994781] [2022-12-13 11:27:45,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:27:45,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:27:45,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:27:45,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:27:45,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:27:45,772 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 427 out of 1016 [2022-12-13 11:27:45,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 427.6666666666667) internal successors, (1283), 3 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:27:45,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:27:45,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 427 of 1016 [2022-12-13 11:27:45,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:27:46,945 INFO L130 PetriNetUnfolder]: 6211/8841 cut-off events. [2022-12-13 11:27:46,945 INFO L131 PetriNetUnfolder]: For 462/462 co-relation queries the response was YES. [2022-12-13 11:27:46,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18123 conditions, 8841 events. 6211/8841 cut-off events. For 462/462 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 46918 event pairs, 5306 based on Foata normal form. 0/3413 useless extension candidates. Maximal degree in co-relation 8144. Up to 4423 conditions per place. [2022-12-13 11:27:46,981 INFO L137 encePairwiseOnDemand]: 1003/1016 looper letters, 73 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2022-12-13 11:27:46,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 75 transitions, 330 flow [2022-12-13 11:27:46,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:27:46,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:27:46,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1376 transitions. [2022-12-13 11:27:46,994 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45144356955380577 [2022-12-13 11:27:46,994 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1376 transitions. [2022-12-13 11:27:46,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1376 transitions. [2022-12-13 11:27:46,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:27:46,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1376 transitions. [2022-12-13 11:27:47,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 458.6666666666667) internal successors, (1376), 3 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:27:47,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:27:47,022 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:27:47,024 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 111 flow. Second operand 3 states and 1376 transitions. [2022-12-13 11:27:47,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 75 transitions, 330 flow [2022-12-13 11:27:47,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 75 transitions, 312 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 11:27:47,039 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 98 flow [2022-12-13 11:27:47,041 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2022-12-13 11:27:47,044 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2022-12-13 11:27:47,045 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 98 flow [2022-12-13 11:27:47,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 427.6666666666667) internal successors, (1283), 3 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:27:47,046 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:27:47,046 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 11:27:47,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:27:47,046 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 11:27:47,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:27:47,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1908899, now seen corresponding path program 1 times [2022-12-13 11:27:47,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:27:47,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412021778] [2022-12-13 11:27:47,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:27:47,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:27:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:27:47,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:27:47,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:27:47,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412021778] [2022-12-13 11:27:47,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412021778] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:27:47,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:27:47,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:27:47,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813557187] [2022-12-13 11:27:47,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:27:47,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:27:47,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:27:47,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:27:47,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:27:47,119 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 427 out of 1016 [2022-12-13 11:27:47,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 428.0) internal successors, (1284), 3 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:27:47,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:27:47,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 427 of 1016 [2022-12-13 11:27:47,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:27:48,172 INFO L130 PetriNetUnfolder]: 6211/8840 cut-off events. [2022-12-13 11:27:48,173 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2022-12-13 11:27:48,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17963 conditions, 8840 events. 6211/8840 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 47114 event pairs, 5306 based on Foata normal form. 0/3415 useless extension candidates. Maximal degree in co-relation 8979. Up to 8840 conditions per place. [2022-12-13 11:27:48,204 INFO L137 encePairwiseOnDemand]: 1014/1016 looper letters, 38 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2022-12-13 11:27:48,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 39 transitions, 172 flow [2022-12-13 11:27:48,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:27:48,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:27:48,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1320 transitions. [2022-12-13 11:27:48,206 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4330708661417323 [2022-12-13 11:27:48,206 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1320 transitions. [2022-12-13 11:27:48,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1320 transitions. [2022-12-13 11:27:48,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:27:48,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1320 transitions. [2022-12-13 11:27:48,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 440.0) internal successors, (1320), 3 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:27:48,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:27:48,213 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:27:48,213 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 98 flow. Second operand 3 states and 1320 transitions. [2022-12-13 11:27:48,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 39 transitions, 172 flow [2022-12-13 11:27:48,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 170 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:27:48,214 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 94 flow [2022-12-13 11:27:48,215 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2022-12-13 11:27:48,215 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2022-12-13 11:27:48,215 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 94 flow [2022-12-13 11:27:48,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 428.0) internal successors, (1284), 3 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:27:48,216 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:27:48,216 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 11:27:48,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:27:48,216 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 11:27:48,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:27:48,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1908929, now seen corresponding path program 1 times [2022-12-13 11:27:48,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:27:48,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787178214] [2022-12-13 11:27:48,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:27:48,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:27:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:27:48,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:27:48,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:27:48,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787178214] [2022-12-13 11:27:48,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787178214] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:27:48,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75244274] [2022-12-13 11:27:48,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:27:48,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:27:48,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:27:48,276 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:27:48,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 11:27:48,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:27:48,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:27:48,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:27:48,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:27:48,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:27:48,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:27:48,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75244274] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:27:48,402 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:27:48,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 11:27:48,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255057999] [2022-12-13 11:27:48,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:27:48,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:27:48,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:27:48,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:27:48,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:27:48,429 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 427 out of 1016 [2022-12-13 11:27:48,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 94 flow. Second operand has 7 states, 7 states have (on average 428.14285714285717) internal successors, (2997), 7 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:27:48,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:27:48,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 427 of 1016 [2022-12-13 11:27:48,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:27:50,988 INFO L130 PetriNetUnfolder]: 15526/22097 cut-off events. [2022-12-13 11:27:50,988 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2022-12-13 11:27:51,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44891 conditions, 22097 events. 15526/22097 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 1234. Compared 130428 event pairs, 13265 based on Foata normal form. 0/8536 useless extension candidates. Maximal degree in co-relation 44883. Up to 4422 conditions per place. [2022-12-13 11:27:51,067 INFO L137 encePairwiseOnDemand]: 1013/1016 looper letters, 177 selfloop transitions, 5 changer transitions 0/182 dead transitions. [2022-12-13 11:27:51,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 182 transitions, 774 flow [2022-12-13 11:27:51,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:27:51,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 11:27:51,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2747 transitions. [2022-12-13 11:27:51,074 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4506233595800525 [2022-12-13 11:27:51,074 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2747 transitions. [2022-12-13 11:27:51,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2747 transitions. [2022-12-13 11:27:51,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:27:51,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2747 transitions. [2022-12-13 11:27:51,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 457.8333333333333) internal successors, (2747), 6 states have internal predecessors, (2747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:27:51,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1016.0) internal successors, (7112), 7 states have internal predecessors, (7112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:27:51,091 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1016.0) internal successors, (7112), 7 states have internal predecessors, (7112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:27:51,091 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 94 flow. Second operand 6 states and 2747 transitions. [2022-12-13 11:27:51,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 182 transitions, 774 flow [2022-12-13 11:27:51,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 182 transitions, 773 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:27:51,093 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 129 flow [2022-12-13 11:27:51,094 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2022-12-13 11:27:51,094 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2022-12-13 11:27:51,094 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 129 flow [2022-12-13 11:27:51,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 428.14285714285717) internal successors, (2997), 7 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:27:51,095 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:27:51,096 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 11:27:51,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:27:51,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:27:51,297 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 11:27:51,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:27:51,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1832861378, now seen corresponding path program 1 times [2022-12-13 11:27:51,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:27:51,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943138195] [2022-12-13 11:27:51,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:27:51,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:27:51,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:27:51,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:27:51,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:27:51,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943138195] [2022-12-13 11:27:51,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943138195] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:27:51,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:27:51,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:27:51,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923206145] [2022-12-13 11:27:51,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:27:51,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:27:51,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:27:51,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:27:51,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:27:51,454 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1016 [2022-12-13 11:27:51,456 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 427.6666666666667) internal successors, (1283), 3 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:27:51,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:27:51,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1016 [2022-12-13 11:27:51,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:27:54,823 INFO L130 PetriNetUnfolder]: 20426/29177 cut-off events. [2022-12-13 11:27:54,823 INFO L131 PetriNetUnfolder]: For 241/241 co-relation queries the response was YES. [2022-12-13 11:27:54,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59236 conditions, 29177 events. 20426/29177 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 1703. Compared 185671 event pairs, 13265 based on Foata normal form. 0/11827 useless extension candidates. Maximal degree in co-relation 59224. Up to 22098 conditions per place. [2022-12-13 11:27:54,909 INFO L137 encePairwiseOnDemand]: 1009/1016 looper letters, 67 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2022-12-13 11:27:54,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 69 transitions, 326 flow [2022-12-13 11:27:54,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:27:54,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:27:54,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1348 transitions. [2022-12-13 11:27:54,912 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.442257217847769 [2022-12-13 11:27:54,912 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1348 transitions. [2022-12-13 11:27:54,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1348 transitions. [2022-12-13 11:27:54,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:27:54,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1348 transitions. [2022-12-13 11:27:54,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 449.3333333333333) internal successors, (1348), 3 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:27:54,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:27:54,918 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:27:54,918 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 129 flow. Second operand 3 states and 1348 transitions. [2022-12-13 11:27:54,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 69 transitions, 326 flow [2022-12-13 11:27:54,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 69 transitions, 318 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 11:27:54,920 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 141 flow [2022-12-13 11:27:54,920 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2022-12-13 11:27:54,920 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -2 predicate places. [2022-12-13 11:27:54,920 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 141 flow [2022-12-13 11:27:54,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 427.6666666666667) internal successors, (1283), 3 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:27:54,921 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:27:54,921 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 11:27:54,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 11:27:54,921 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 11:27:54,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:27:54,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1038187789, now seen corresponding path program 2 times [2022-12-13 11:27:54,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:27:54,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210152798] [2022-12-13 11:27:54,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:27:54,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:27:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:27:54,990 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:27:54,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:27:54,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210152798] [2022-12-13 11:27:54,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210152798] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:27:54,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:27:54,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:27:54,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165667823] [2022-12-13 11:27:54,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:27:54,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 11:27:54,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:27:54,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 11:27:54,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:27:55,023 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 424 out of 1016 [2022-12-13 11:27:55,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 141 flow. Second operand has 6 states, 6 states have (on average 425.0) internal successors, (2550), 6 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:27:55,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:27:55,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 424 of 1016 [2022-12-13 11:27:55,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:27:57,359 INFO L130 PetriNetUnfolder]: 16340/23340 cut-off events. [2022-12-13 11:27:57,359 INFO L131 PetriNetUnfolder]: For 3284/3284 co-relation queries the response was YES. [2022-12-13 11:27:57,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52637 conditions, 23340 events. 16340/23340 cut-off events. For 3284/3284 co-relation queries the response was YES. Maximal size of possible extension queue 1450. Compared 142134 event pairs, 14124 based on Foata normal form. 1/10629 useless extension candidates. Maximal degree in co-relation 52624. Up to 23337 conditions per place. [2022-12-13 11:27:57,440 INFO L137 encePairwiseOnDemand]: 1013/1016 looper letters, 36 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2022-12-13 11:27:57,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 43 transitions, 212 flow [2022-12-13 11:27:57,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:27:57,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 11:27:57,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2587 transitions. [2022-12-13 11:27:57,444 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4243766404199475 [2022-12-13 11:27:57,444 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2587 transitions. [2022-12-13 11:27:57,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2587 transitions. [2022-12-13 11:27:57,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:27:57,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2587 transitions. [2022-12-13 11:27:57,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 431.1666666666667) internal successors, (2587), 6 states have internal predecessors, (2587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:27:57,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1016.0) internal successors, (7112), 7 states have internal predecessors, (7112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:27:57,455 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1016.0) internal successors, (7112), 7 states have internal predecessors, (7112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:27:57,455 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 141 flow. Second operand 6 states and 2587 transitions. [2022-12-13 11:27:57,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 43 transitions, 212 flow [2022-12-13 11:27:57,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 43 transitions, 202 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 11:27:57,457 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 132 flow [2022-12-13 11:27:57,457 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=132, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2022-12-13 11:27:57,458 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2022-12-13 11:27:57,458 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 132 flow [2022-12-13 11:27:57,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 425.0) internal successors, (2550), 6 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:27:57,458 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:27:57,458 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 11:27:57,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 11:27:57,459 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 11:27:57,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:27:57,459 INFO L85 PathProgramCache]: Analyzing trace with hash 984130062, now seen corresponding path program 1 times [2022-12-13 11:27:57,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:27:57,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230730987] [2022-12-13 11:27:57,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:27:57,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:27:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:27:57,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:27:57,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:27:57,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230730987] [2022-12-13 11:27:57,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230730987] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:27:57,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:27:57,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:27:57,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715610644] [2022-12-13 11:27:57,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:27:57,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:27:57,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:27:57,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:27:57,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:27:57,519 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 1016 [2022-12-13 11:27:57,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 430.0) internal successors, (1290), 3 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:27:57,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:27:57,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 1016 [2022-12-13 11:27:57,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:27:59,824 INFO L130 PetriNetUnfolder]: 13084/18724 cut-off events. [2022-12-13 11:27:59,824 INFO L131 PetriNetUnfolder]: For 1856/1856 co-relation queries the response was YES. [2022-12-13 11:27:59,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41593 conditions, 18724 events. 13084/18724 cut-off events. For 1856/1856 co-relation queries the response was YES. Maximal size of possible extension queue 1062. Compared 109682 event pairs, 11164 based on Foata normal form. 0/9004 useless extension candidates. Maximal degree in co-relation 41584. Up to 18724 conditions per place. [2022-12-13 11:27:59,874 INFO L137 encePairwiseOnDemand]: 1013/1016 looper letters, 40 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2022-12-13 11:27:59,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 41 transitions, 208 flow [2022-12-13 11:27:59,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:27:59,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:27:59,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1321 transitions. [2022-12-13 11:27:59,877 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4333989501312336 [2022-12-13 11:27:59,877 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1321 transitions. [2022-12-13 11:27:59,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1321 transitions. [2022-12-13 11:27:59,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:27:59,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1321 transitions. [2022-12-13 11:27:59,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 440.3333333333333) internal successors, (1321), 3 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:27:59,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:27:59,883 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:27:59,883 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 132 flow. Second operand 3 states and 1321 transitions. [2022-12-13 11:27:59,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 41 transitions, 208 flow [2022-12-13 11:27:59,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 41 transitions, 195 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-12-13 11:27:59,884 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 115 flow [2022-12-13 11:27:59,884 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2022-12-13 11:27:59,885 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -8 predicate places. [2022-12-13 11:27:59,885 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 115 flow [2022-12-13 11:27:59,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 430.0) internal successors, (1290), 3 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:27:59,885 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:27:59,885 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 11:27:59,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 11:27:59,886 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 11:27:59,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:27:59,886 INFO L85 PathProgramCache]: Analyzing trace with hash 984130089, now seen corresponding path program 1 times [2022-12-13 11:27:59,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:27:59,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445360476] [2022-12-13 11:27:59,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:27:59,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:27:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:27:59,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:27:59,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:27:59,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445360476] [2022-12-13 11:27:59,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445360476] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:27:59,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:27:59,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:27:59,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712481366] [2022-12-13 11:27:59,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:27:59,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:27:59,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:27:59,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:27:59,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:27:59,944 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 425 out of 1016 [2022-12-13 11:27:59,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 427.0) internal successors, (1281), 3 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:27:59,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:27:59,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 425 of 1016 [2022-12-13 11:27:59,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:28:00,901 INFO L130 PetriNetUnfolder]: 6543/9365 cut-off events. [2022-12-13 11:28:00,901 INFO L131 PetriNetUnfolder]: For 928/928 co-relation queries the response was YES. [2022-12-13 11:28:00,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20805 conditions, 9365 events. 6543/9365 cut-off events. For 928/928 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 49344 event pairs, 5582 based on Foata normal form. 1/4506 useless extension candidates. Maximal degree in co-relation 20796. Up to 9365 conditions per place. [2022-12-13 11:28:00,921 INFO L137 encePairwiseOnDemand]: 1013/1016 looper letters, 38 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2022-12-13 11:28:00,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 191 flow [2022-12-13 11:28:00,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:28:00,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:28:00,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1312 transitions. [2022-12-13 11:28:00,923 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4304461942257218 [2022-12-13 11:28:00,923 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1312 transitions. [2022-12-13 11:28:00,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1312 transitions. [2022-12-13 11:28:00,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:28:00,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1312 transitions. [2022-12-13 11:28:00,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 437.3333333333333) internal successors, (1312), 3 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:00,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:00,931 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:00,931 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 115 flow. Second operand 3 states and 1312 transitions. [2022-12-13 11:28:00,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 191 flow [2022-12-13 11:28:00,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 40 transitions, 190 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:28:00,933 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 114 flow [2022-12-13 11:28:00,933 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2022-12-13 11:28:00,934 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -7 predicate places. [2022-12-13 11:28:00,934 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 114 flow [2022-12-13 11:28:00,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 427.0) internal successors, (1281), 3 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:00,935 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:28:00,935 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:28:00,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 11:28:00,935 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 11:28:00,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:28:00,935 INFO L85 PathProgramCache]: Analyzing trace with hash 2064996574, now seen corresponding path program 1 times [2022-12-13 11:28:00,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:28:00,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46310210] [2022-12-13 11:28:00,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:28:00,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:28:00,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:28:00,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:28:00,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:28:00,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46310210] [2022-12-13 11:28:00,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46310210] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:28:00,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:28:00,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:28:00,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965517558] [2022-12-13 11:28:00,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:28:00,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:28:00,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:28:00,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:28:00,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:28:01,004 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 1016 [2022-12-13 11:28:01,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 430.3333333333333) internal successors, (1291), 3 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:01,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:28:01,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 1016 [2022-12-13 11:28:01,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:28:01,769 INFO L130 PetriNetUnfolder]: 5091/7305 cut-off events. [2022-12-13 11:28:01,769 INFO L131 PetriNetUnfolder]: For 796/796 co-relation queries the response was YES. [2022-12-13 11:28:01,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16153 conditions, 7305 events. 5091/7305 cut-off events. For 796/796 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 36775 event pairs, 4270 based on Foata normal form. 0/3749 useless extension candidates. Maximal degree in co-relation 16143. Up to 7305 conditions per place. [2022-12-13 11:28:01,789 INFO L137 encePairwiseOnDemand]: 1013/1016 looper letters, 37 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2022-12-13 11:28:01,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 38 transitions, 184 flow [2022-12-13 11:28:01,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:28:01,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:28:01,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1319 transitions. [2022-12-13 11:28:01,791 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.432742782152231 [2022-12-13 11:28:01,791 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1319 transitions. [2022-12-13 11:28:01,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1319 transitions. [2022-12-13 11:28:01,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:28:01,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1319 transitions. [2022-12-13 11:28:01,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 439.6666666666667) internal successors, (1319), 3 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:01,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:01,796 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:01,796 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 114 flow. Second operand 3 states and 1319 transitions. [2022-12-13 11:28:01,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 38 transitions, 184 flow [2022-12-13 11:28:01,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 38 transitions, 180 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:28:01,797 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 106 flow [2022-12-13 11:28:01,797 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2022-12-13 11:28:01,798 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -9 predicate places. [2022-12-13 11:28:01,798 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 106 flow [2022-12-13 11:28:01,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 430.3333333333333) internal successors, (1291), 3 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:01,799 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:28:01,799 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:28:01,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 11:28:01,799 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 11:28:01,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:28:01,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2064996573, now seen corresponding path program 1 times [2022-12-13 11:28:01,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:28:01,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638396025] [2022-12-13 11:28:01,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:28:01,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:28:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:28:01,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:28:01,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:28:01,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638396025] [2022-12-13 11:28:01,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638396025] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:28:01,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88188364] [2022-12-13 11:28:01,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:28:01,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:28:01,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:28:01,851 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:28:01,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 11:28:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:28:01,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 11:28:01,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:28:01,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:28:01,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:28:01,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:28:01,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88188364] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:28:01,953 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:28:01,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 11:28:01,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427536783] [2022-12-13 11:28:01,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:28:01,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:28:01,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:28:01,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:28:01,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:28:01,984 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 424 out of 1016 [2022-12-13 11:28:01,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 106 flow. Second operand has 7 states, 7 states have (on average 425.85714285714283) internal successors, (2981), 7 states have internal predecessors, (2981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:01,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:28:01,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 424 of 1016 [2022-12-13 11:28:01,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:28:02,432 INFO L130 PetriNetUnfolder]: 2545/3654 cut-off events. [2022-12-13 11:28:02,432 INFO L131 PetriNetUnfolder]: For 398/398 co-relation queries the response was YES. [2022-12-13 11:28:02,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8083 conditions, 3654 events. 2545/3654 cut-off events. For 398/398 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 16760 event pairs, 2135 based on Foata normal form. 2/1878 useless extension candidates. Maximal degree in co-relation 8073. Up to 3652 conditions per place. [2022-12-13 11:28:02,442 INFO L137 encePairwiseOnDemand]: 1013/1016 looper letters, 32 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2022-12-13 11:28:02,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 36 transitions, 170 flow [2022-12-13 11:28:02,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:28:02,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:28:02,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2157 transitions. [2022-12-13 11:28:02,445 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4246062992125984 [2022-12-13 11:28:02,445 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2157 transitions. [2022-12-13 11:28:02,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2157 transitions. [2022-12-13 11:28:02,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:28:02,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2157 transitions. [2022-12-13 11:28:02,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 431.4) internal successors, (2157), 5 states have internal predecessors, (2157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:02,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1016.0) internal successors, (6096), 6 states have internal predecessors, (6096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:02,450 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1016.0) internal successors, (6096), 6 states have internal predecessors, (6096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:02,450 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 106 flow. Second operand 5 states and 2157 transitions. [2022-12-13 11:28:02,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 36 transitions, 170 flow [2022-12-13 11:28:02,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 36 transitions, 169 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:28:02,451 INFO L231 Difference]: Finished difference. Result has 48 places, 36 transitions, 105 flow [2022-12-13 11:28:02,451 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=105, PETRI_PLACES=48, PETRI_TRANSITIONS=36} [2022-12-13 11:28:02,452 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -6 predicate places. [2022-12-13 11:28:02,452 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 36 transitions, 105 flow [2022-12-13 11:28:02,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 425.85714285714283) internal successors, (2981), 7 states have internal predecessors, (2981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:02,452 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:28:02,452 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-12-13 11:28:02,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 11:28:02,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-13 11:28:02,654 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 11:28:02,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:28:02,654 INFO L85 PathProgramCache]: Analyzing trace with hash 542724713, now seen corresponding path program 1 times [2022-12-13 11:28:02,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:28:02,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115658140] [2022-12-13 11:28:02,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:28:02,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:28:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:28:02,715 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 11:28:02,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:28:02,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115658140] [2022-12-13 11:28:02,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115658140] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:28:02,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:28:02,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:28:02,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827511993] [2022-12-13 11:28:02,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:28:02,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:28:02,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:28:02,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:28:02,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:28:02,726 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1016 [2022-12-13 11:28:02,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 36 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 428.3333333333333) internal successors, (1285), 3 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:02,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:28:02,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1016 [2022-12-13 11:28:02,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:28:03,133 INFO L130 PetriNetUnfolder]: 2279/3278 cut-off events. [2022-12-13 11:28:03,133 INFO L131 PetriNetUnfolder]: For 398/398 co-relation queries the response was YES. [2022-12-13 11:28:03,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7212 conditions, 3278 events. 2279/3278 cut-off events. For 398/398 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 14710 event pairs, 1899 based on Foata normal form. 0/1754 useless extension candidates. Maximal degree in co-relation 7201. Up to 3278 conditions per place. [2022-12-13 11:28:03,141 INFO L137 encePairwiseOnDemand]: 1014/1016 looper letters, 34 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2022-12-13 11:28:03,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 35 transitions, 171 flow [2022-12-13 11:28:03,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:28:03,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:28:03,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1311 transitions. [2022-12-13 11:28:03,143 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4301181102362205 [2022-12-13 11:28:03,143 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1311 transitions. [2022-12-13 11:28:03,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1311 transitions. [2022-12-13 11:28:03,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:28:03,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1311 transitions. [2022-12-13 11:28:03,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 437.0) internal successors, (1311), 3 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:03,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:03,147 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:03,147 INFO L175 Difference]: Start difference. First operand has 48 places, 36 transitions, 105 flow. Second operand 3 states and 1311 transitions. [2022-12-13 11:28:03,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 35 transitions, 171 flow [2022-12-13 11:28:03,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 35 transitions, 163 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 11:28:03,148 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 95 flow [2022-12-13 11:28:03,148 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2022-12-13 11:28:03,148 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -9 predicate places. [2022-12-13 11:28:03,148 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 95 flow [2022-12-13 11:28:03,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 428.3333333333333) internal successors, (1285), 3 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:03,148 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:28:03,148 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-12-13 11:28:03,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 11:28:03,149 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 11:28:03,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:28:03,149 INFO L85 PathProgramCache]: Analyzing trace with hash 542724701, now seen corresponding path program 2 times [2022-12-13 11:28:03,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:28:03,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967271395] [2022-12-13 11:28:03,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:28:03,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:28:03,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:28:03,202 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 11:28:03,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:28:03,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967271395] [2022-12-13 11:28:03,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967271395] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:28:03,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941764066] [2022-12-13 11:28:03,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:28:03,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:28:03,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:28:03,204 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:28:03,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 11:28:03,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 11:28:03,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:28:03,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 11:28:03,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:28:03,303 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 11:28:03,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:28:03,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941764066] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:28:03,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:28:03,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-12-13 11:28:03,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019595267] [2022-12-13 11:28:03,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:28:03,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:28:03,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:28:03,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:28:03,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:28:03,318 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 1016 [2022-12-13 11:28:03,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 430.3333333333333) internal successors, (1291), 3 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:03,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:28:03,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 1016 [2022-12-13 11:28:03,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:28:03,660 INFO L130 PetriNetUnfolder]: 1781/2570 cut-off events. [2022-12-13 11:28:03,660 INFO L131 PetriNetUnfolder]: For 350/350 co-relation queries the response was YES. [2022-12-13 11:28:03,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5622 conditions, 2570 events. 1781/2570 cut-off events. For 350/350 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 10946 event pairs, 1459 based on Foata normal form. 0/1476 useless extension candidates. Maximal degree in co-relation 5611. Up to 2570 conditions per place. [2022-12-13 11:28:03,666 INFO L137 encePairwiseOnDemand]: 1013/1016 looper letters, 32 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2022-12-13 11:28:03,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 33 transitions, 155 flow [2022-12-13 11:28:03,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:28:03,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:28:03,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1316 transitions. [2022-12-13 11:28:03,669 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.431758530183727 [2022-12-13 11:28:03,669 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1316 transitions. [2022-12-13 11:28:03,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1316 transitions. [2022-12-13 11:28:03,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:28:03,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1316 transitions. [2022-12-13 11:28:03,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 438.6666666666667) internal successors, (1316), 3 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:03,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:03,673 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:03,673 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 95 flow. Second operand 3 states and 1316 transitions. [2022-12-13 11:28:03,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 33 transitions, 155 flow [2022-12-13 11:28:03,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 33 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:28:03,673 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 90 flow [2022-12-13 11:28:03,673 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2022-12-13 11:28:03,674 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -10 predicate places. [2022-12-13 11:28:03,674 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 90 flow [2022-12-13 11:28:03,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 430.3333333333333) internal successors, (1291), 3 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:03,674 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:28:03,674 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-12-13 11:28:03,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 11:28:03,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:28:03,875 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 11:28:03,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:28:03,876 INFO L85 PathProgramCache]: Analyzing trace with hash 542724700, now seen corresponding path program 1 times [2022-12-13 11:28:03,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:28:03,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968620546] [2022-12-13 11:28:03,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:28:03,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:28:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:28:03,925 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 11:28:03,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:28:03,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968620546] [2022-12-13 11:28:03,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968620546] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:28:03,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357693142] [2022-12-13 11:28:03,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:28:03,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:28:03,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:28:03,926 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:28:03,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 11:28:04,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:28:04,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 11:28:04,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:28:04,029 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 11:28:04,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:28:04,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357693142] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:28:04,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:28:04,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-12-13 11:28:04,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057886830] [2022-12-13 11:28:04,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:28:04,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:28:04,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:28:04,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:28:04,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:28:04,046 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 1016 [2022-12-13 11:28:04,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 430.3333333333333) internal successors, (1291), 3 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:04,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:28:04,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 1016 [2022-12-13 11:28:04,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:28:04,294 INFO L130 PetriNetUnfolder]: 1343/1946 cut-off events. [2022-12-13 11:28:04,294 INFO L131 PetriNetUnfolder]: For 302/302 co-relation queries the response was YES. [2022-12-13 11:28:04,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4228 conditions, 1946 events. 1343/1946 cut-off events. For 302/302 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7815 event pairs, 1075 based on Foata normal form. 0/1218 useless extension candidates. Maximal degree in co-relation 4216. Up to 1946 conditions per place. [2022-12-13 11:28:04,299 INFO L137 encePairwiseOnDemand]: 1013/1016 looper letters, 30 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2022-12-13 11:28:04,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 31 transitions, 146 flow [2022-12-13 11:28:04,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:28:04,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:28:04,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1314 transitions. [2022-12-13 11:28:04,301 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4311023622047244 [2022-12-13 11:28:04,301 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1314 transitions. [2022-12-13 11:28:04,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1314 transitions. [2022-12-13 11:28:04,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:28:04,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1314 transitions. [2022-12-13 11:28:04,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 438.0) internal successors, (1314), 3 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:04,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:04,305 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:04,305 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 90 flow. Second operand 3 states and 1314 transitions. [2022-12-13 11:28:04,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 31 transitions, 146 flow [2022-12-13 11:28:04,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 31 transitions, 145 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:28:04,306 INFO L231 Difference]: Finished difference. Result has 43 places, 31 transitions, 85 flow [2022-12-13 11:28:04,306 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2022-12-13 11:28:04,306 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2022-12-13 11:28:04,307 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 85 flow [2022-12-13 11:28:04,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 430.3333333333333) internal successors, (1291), 3 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:04,307 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:28:04,307 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:28:04,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 11:28:04,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:28:04,508 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 11:28:04,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:28:04,508 INFO L85 PathProgramCache]: Analyzing trace with hash -356390235, now seen corresponding path program 1 times [2022-12-13 11:28:04,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:28:04,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18340478] [2022-12-13 11:28:04,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:28:04,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:28:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:28:04,540 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 11:28:04,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:28:04,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18340478] [2022-12-13 11:28:04,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18340478] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:28:04,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:28:04,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:28:04,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257238897] [2022-12-13 11:28:04,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:28:04,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:28:04,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:28:04,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:28:04,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:28:04,555 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 1016 [2022-12-13 11:28:04,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 430.6666666666667) internal successors, (1292), 3 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:04,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:28:04,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 1016 [2022-12-13 11:28:04,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:28:04,749 INFO L130 PetriNetUnfolder]: 956/1391 cut-off events. [2022-12-13 11:28:04,749 INFO L131 PetriNetUnfolder]: For 212/212 co-relation queries the response was YES. [2022-12-13 11:28:04,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3037 conditions, 1391 events. 956/1391 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5125 event pairs, 740 based on Foata normal form. 0/929 useless extension candidates. Maximal degree in co-relation 3024. Up to 1391 conditions per place. [2022-12-13 11:28:04,753 INFO L137 encePairwiseOnDemand]: 1013/1016 looper letters, 28 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2022-12-13 11:28:04,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 29 transitions, 139 flow [2022-12-13 11:28:04,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:28:04,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:28:04,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1312 transitions. [2022-12-13 11:28:04,756 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4304461942257218 [2022-12-13 11:28:04,756 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1312 transitions. [2022-12-13 11:28:04,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1312 transitions. [2022-12-13 11:28:04,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:28:04,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1312 transitions. [2022-12-13 11:28:04,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 437.3333333333333) internal successors, (1312), 3 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:04,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:04,760 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:04,760 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 85 flow. Second operand 3 states and 1312 transitions. [2022-12-13 11:28:04,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 29 transitions, 139 flow [2022-12-13 11:28:04,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 29 transitions, 138 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:28:04,761 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 82 flow [2022-12-13 11:28:04,762 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2022-12-13 11:28:04,762 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -12 predicate places. [2022-12-13 11:28:04,762 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 82 flow [2022-12-13 11:28:04,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 430.6666666666667) internal successors, (1292), 3 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:04,762 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:28:04,762 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:28:04,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 11:28:04,763 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 11:28:04,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:28:04,763 INFO L85 PathProgramCache]: Analyzing trace with hash -356390177, now seen corresponding path program 1 times [2022-12-13 11:28:04,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:28:04,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343340270] [2022-12-13 11:28:04,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:28:04,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:28:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:28:04,793 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 11:28:04,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:28:04,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343340270] [2022-12-13 11:28:04,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343340270] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:28:04,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:28:04,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:28:04,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37269483] [2022-12-13 11:28:04,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:28:04,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:28:04,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:28:04,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:28:04,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:28:04,804 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1016 [2022-12-13 11:28:04,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 428.6666666666667) internal successors, (1286), 3 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:04,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:28:04,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1016 [2022-12-13 11:28:04,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:28:05,159 INFO L130 PetriNetUnfolder]: 1346/1961 cut-off events. [2022-12-13 11:28:05,159 INFO L131 PetriNetUnfolder]: For 316/316 co-relation queries the response was YES. [2022-12-13 11:28:05,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4270 conditions, 1961 events. 1346/1961 cut-off events. For 316/316 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 8116 event pairs, 740 based on Foata normal form. 0/1323 useless extension candidates. Maximal degree in co-relation 4256. Up to 1392 conditions per place. [2022-12-13 11:28:05,163 INFO L137 encePairwiseOnDemand]: 1012/1016 looper letters, 45 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2022-12-13 11:28:05,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 47 transitions, 222 flow [2022-12-13 11:28:05,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:28:05,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:28:05,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1323 transitions. [2022-12-13 11:28:05,166 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4340551181102362 [2022-12-13 11:28:05,166 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1323 transitions. [2022-12-13 11:28:05,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1323 transitions. [2022-12-13 11:28:05,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:28:05,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1323 transitions. [2022-12-13 11:28:05,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 441.0) internal successors, (1323), 3 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:05,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:05,169 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:05,169 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 82 flow. Second operand 3 states and 1323 transitions. [2022-12-13 11:28:05,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 47 transitions, 222 flow [2022-12-13 11:28:05,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 221 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:28:05,170 INFO L231 Difference]: Finished difference. Result has 44 places, 30 transitions, 95 flow [2022-12-13 11:28:05,170 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=44, PETRI_TRANSITIONS=30} [2022-12-13 11:28:05,171 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -10 predicate places. [2022-12-13 11:28:05,171 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 30 transitions, 95 flow [2022-12-13 11:28:05,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 428.6666666666667) internal successors, (1286), 3 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:05,171 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:28:05,171 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:28:05,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 11:28:05,171 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 11:28:05,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:28:05,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1836807399, now seen corresponding path program 1 times [2022-12-13 11:28:05,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:28:05,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72707556] [2022-12-13 11:28:05,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:28:05,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:28:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:28:05,220 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 11:28:05,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:28:05,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72707556] [2022-12-13 11:28:05,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72707556] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:28:05,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273425737] [2022-12-13 11:28:05,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:28:05,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:28:05,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:28:05,221 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:28:05,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 11:28:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:28:05,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:28:05,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:28:05,314 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 11:28:05,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:28:05,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273425737] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:28:05,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:28:05,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-12-13 11:28:05,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413720903] [2022-12-13 11:28:05,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:28:05,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:28:05,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:28:05,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:28:05,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:28:05,328 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 1016 [2022-12-13 11:28:05,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 30 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 431.0) internal successors, (1293), 3 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:05,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:28:05,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 1016 [2022-12-13 11:28:05,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:28:05,525 INFO L130 PetriNetUnfolder]: 955/1398 cut-off events. [2022-12-13 11:28:05,525 INFO L131 PetriNetUnfolder]: For 505/505 co-relation queries the response was YES. [2022-12-13 11:28:05,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3393 conditions, 1398 events. 955/1398 cut-off events. For 505/505 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5108 event pairs, 735 based on Foata normal form. 0/1148 useless extension candidates. Maximal degree in co-relation 3378. Up to 1398 conditions per place. [2022-12-13 11:28:05,528 INFO L137 encePairwiseOnDemand]: 1013/1016 looper letters, 27 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2022-12-13 11:28:05,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 28 transitions, 145 flow [2022-12-13 11:28:05,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:28:05,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:28:05,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1310 transitions. [2022-12-13 11:28:05,530 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42979002624671914 [2022-12-13 11:28:05,530 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1310 transitions. [2022-12-13 11:28:05,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1310 transitions. [2022-12-13 11:28:05,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:28:05,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1310 transitions. [2022-12-13 11:28:05,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 436.6666666666667) internal successors, (1310), 3 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:05,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:05,534 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:05,534 INFO L175 Difference]: Start difference. First operand has 44 places, 30 transitions, 95 flow. Second operand 3 states and 1310 transitions. [2022-12-13 11:28:05,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 28 transitions, 145 flow [2022-12-13 11:28:05,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 28 transitions, 143 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:28:05,535 INFO L231 Difference]: Finished difference. Result has 43 places, 28 transitions, 89 flow [2022-12-13 11:28:05,535 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=43, PETRI_TRANSITIONS=28} [2022-12-13 11:28:05,536 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2022-12-13 11:28:05,536 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 28 transitions, 89 flow [2022-12-13 11:28:05,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 431.0) internal successors, (1293), 3 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:05,536 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:28:05,536 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:28:05,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 11:28:05,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 11:28:05,738 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 11:28:05,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:28:05,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1836807371, now seen corresponding path program 1 times [2022-12-13 11:28:05,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:28:05,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353943295] [2022-12-13 11:28:05,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:28:05,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:28:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:28:05,824 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 11:28:05,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:28:05,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353943295] [2022-12-13 11:28:05,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353943295] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:28:05,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077777652] [2022-12-13 11:28:05,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:28:05,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:28:05,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:28:05,825 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:28:05,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 11:28:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:28:05,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:28:05,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:28:05,935 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 11:28:05,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:28:05,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077777652] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:28:05,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:28:05,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 11:28:05,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605081221] [2022-12-13 11:28:05,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:28:05,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:28:05,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:28:05,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:28:05,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:28:05,947 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1016 [2022-12-13 11:28:05,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 28 transitions, 89 flow. Second operand has 4 states, 4 states have (on average 428.25) internal successors, (1713), 4 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:05,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:28:05,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1016 [2022-12-13 11:28:05,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:28:06,162 INFO L130 PetriNetUnfolder]: 803/1180 cut-off events. [2022-12-13 11:28:06,162 INFO L131 PetriNetUnfolder]: For 249/249 co-relation queries the response was YES. [2022-12-13 11:28:06,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2786 conditions, 1180 events. 803/1180 cut-off events. For 249/249 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4554 event pairs, 71 based on Foata normal form. 0/1024 useless extension candidates. Maximal degree in co-relation 2770. Up to 534 conditions per place. [2022-12-13 11:28:06,165 INFO L137 encePairwiseOnDemand]: 1013/1016 looper letters, 51 selfloop transitions, 2 changer transitions 3/56 dead transitions. [2022-12-13 11:28:06,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 274 flow [2022-12-13 11:28:06,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:28:06,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:28:06,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1756 transitions. [2022-12-13 11:28:06,167 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43208661417322836 [2022-12-13 11:28:06,168 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1756 transitions. [2022-12-13 11:28:06,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1756 transitions. [2022-12-13 11:28:06,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:28:06,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1756 transitions. [2022-12-13 11:28:06,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:06,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1016.0) internal successors, (5080), 5 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:06,172 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1016.0) internal successors, (5080), 5 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:06,172 INFO L175 Difference]: Start difference. First operand has 43 places, 28 transitions, 89 flow. Second operand 4 states and 1756 transitions. [2022-12-13 11:28:06,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 274 flow [2022-12-13 11:28:06,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 273 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:28:06,173 INFO L231 Difference]: Finished difference. Result has 44 places, 26 transitions, 86 flow [2022-12-13 11:28:06,174 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=44, PETRI_TRANSITIONS=26} [2022-12-13 11:28:06,174 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -10 predicate places. [2022-12-13 11:28:06,174 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 26 transitions, 86 flow [2022-12-13 11:28:06,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 428.25) internal successors, (1713), 4 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:06,174 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:28:06,174 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:28:06,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-13 11:28:06,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 11:28:06,375 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 11:28:06,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:28:06,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1108203708, now seen corresponding path program 1 times [2022-12-13 11:28:06,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:28:06,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366314208] [2022-12-13 11:28:06,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:28:06,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:28:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:28:06,421 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 11:28:06,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:28:06,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366314208] [2022-12-13 11:28:06,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366314208] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:28:06,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:28:06,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:28:06,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4893285] [2022-12-13 11:28:06,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:28:06,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:28:06,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:28:06,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:28:06,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:28:06,430 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1016 [2022-12-13 11:28:06,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 26 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 429.3333333333333) internal successors, (1288), 3 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:06,431 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:28:06,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1016 [2022-12-13 11:28:06,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:28:06,685 INFO L130 PetriNetUnfolder]: 803/1180 cut-off events. [2022-12-13 11:28:06,686 INFO L131 PetriNetUnfolder]: For 583/583 co-relation queries the response was YES. [2022-12-13 11:28:06,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2918 conditions, 1180 events. 803/1180 cut-off events. For 583/583 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4269 event pairs, 458 based on Foata normal form. 0/1102 useless extension candidates. Maximal degree in co-relation 2902. Up to 930 conditions per place. [2022-12-13 11:28:06,690 INFO L137 encePairwiseOnDemand]: 1013/1016 looper letters, 38 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2022-12-13 11:28:06,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 40 transitions, 212 flow [2022-12-13 11:28:06,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:28:06,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:28:06,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1313 transitions. [2022-12-13 11:28:06,693 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43077427821522307 [2022-12-13 11:28:06,693 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1313 transitions. [2022-12-13 11:28:06,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1313 transitions. [2022-12-13 11:28:06,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:28:06,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1313 transitions. [2022-12-13 11:28:06,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 437.6666666666667) internal successors, (1313), 3 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:06,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:06,699 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:06,699 INFO L175 Difference]: Start difference. First operand has 44 places, 26 transitions, 86 flow. Second operand 3 states and 1313 transitions. [2022-12-13 11:28:06,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 40 transitions, 212 flow [2022-12-13 11:28:06,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 40 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:28:06,700 INFO L231 Difference]: Finished difference. Result has 44 places, 27 transitions, 95 flow [2022-12-13 11:28:06,701 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=44, PETRI_TRANSITIONS=27} [2022-12-13 11:28:06,701 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -10 predicate places. [2022-12-13 11:28:06,701 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 27 transitions, 95 flow [2022-12-13 11:28:06,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 429.3333333333333) internal successors, (1288), 3 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:06,701 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:28:06,702 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:28:06,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 11:28:06,702 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 11:28:06,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:28:06,702 INFO L85 PathProgramCache]: Analyzing trace with hash -5421579, now seen corresponding path program 1 times [2022-12-13 11:28:06,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:28:06,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695588127] [2022-12-13 11:28:06,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:28:06,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:28:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:28:06,742 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 11:28:06,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:28:06,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695588127] [2022-12-13 11:28:06,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695588127] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:28:06,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:28:06,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:28:06,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487655908] [2022-12-13 11:28:06,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:28:06,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:28:06,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:28:06,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:28:06,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:28:06,753 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1016 [2022-12-13 11:28:06,754 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 27 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 429.6666666666667) internal successors, (1289), 3 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:06,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:28:06,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1016 [2022-12-13 11:28:06,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:28:06,917 INFO L130 PetriNetUnfolder]: 630/929 cut-off events. [2022-12-13 11:28:06,917 INFO L131 PetriNetUnfolder]: For 553/553 co-relation queries the response was YES. [2022-12-13 11:28:06,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2577 conditions, 929 events. 630/929 cut-off events. For 553/553 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3076 event pairs, 458 based on Foata normal form. 0/929 useless extension candidates. Maximal degree in co-relation 2560. Up to 929 conditions per place. [2022-12-13 11:28:06,918 INFO L137 encePairwiseOnDemand]: 1014/1016 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2022-12-13 11:28:06,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 26 transitions, 143 flow [2022-12-13 11:28:06,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:28:06,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:28:06,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1300 transitions. [2022-12-13 11:28:06,921 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42650918635170604 [2022-12-13 11:28:06,921 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1300 transitions. [2022-12-13 11:28:06,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1300 transitions. [2022-12-13 11:28:06,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:28:06,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1300 transitions. [2022-12-13 11:28:06,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 433.3333333333333) internal successors, (1300), 3 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:06,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:06,924 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:06,924 INFO L175 Difference]: Start difference. First operand has 44 places, 27 transitions, 95 flow. Second operand 3 states and 1300 transitions. [2022-12-13 11:28:06,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 26 transitions, 143 flow [2022-12-13 11:28:06,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 26 transitions, 139 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 11:28:06,925 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2022-12-13 11:28:06,925 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2022-12-13 11:28:06,926 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -10 predicate places. [2022-12-13 11:28:06,926 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2022-12-13 11:28:06,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 429.6666666666667) internal successors, (1289), 3 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:28:06,928 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 53 remaining) [2022-12-13 11:28:06,928 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 53 remaining) [2022-12-13 11:28:06,928 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 53 remaining) [2022-12-13 11:28:06,928 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 53 remaining) [2022-12-13 11:28:06,928 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 53 remaining) [2022-12-13 11:28:06,928 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 53 remaining) [2022-12-13 11:28:06,928 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 53 remaining) [2022-12-13 11:28:06,928 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 53 remaining) [2022-12-13 11:28:06,928 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 53 remaining) [2022-12-13 11:28:06,928 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 53 remaining) [2022-12-13 11:28:06,928 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 53 remaining) [2022-12-13 11:28:06,928 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 53 remaining) [2022-12-13 11:28:06,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 53 remaining) [2022-12-13 11:28:06,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 53 remaining) [2022-12-13 11:28:06,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 53 remaining) [2022-12-13 11:28:06,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 53 remaining) [2022-12-13 11:28:06,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 53 remaining) [2022-12-13 11:28:06,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 53 remaining) [2022-12-13 11:28:06,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 53 remaining) [2022-12-13 11:28:06,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 53 remaining) [2022-12-13 11:28:06,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 53 remaining) [2022-12-13 11:28:06,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 53 remaining) [2022-12-13 11:28:06,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 53 remaining) [2022-12-13 11:28:06,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 53 remaining) [2022-12-13 11:28:06,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 53 remaining) [2022-12-13 11:28:06,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 53 remaining) [2022-12-13 11:28:06,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 53 remaining) [2022-12-13 11:28:06,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 53 remaining) [2022-12-13 11:28:06,929 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 53 remaining) [2022-12-13 11:28:06,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 53 remaining) [2022-12-13 11:28:06,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 53 remaining) [2022-12-13 11:28:06,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 53 remaining) [2022-12-13 11:28:06,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 53 remaining) [2022-12-13 11:28:06,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 53 remaining) [2022-12-13 11:28:06,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 53 remaining) [2022-12-13 11:28:06,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 53 remaining) [2022-12-13 11:28:06,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 53 remaining) [2022-12-13 11:28:06,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 53 remaining) [2022-12-13 11:28:06,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 53 remaining) [2022-12-13 11:28:06,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 53 remaining) [2022-12-13 11:28:06,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 53 remaining) [2022-12-13 11:28:06,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 53 remaining) [2022-12-13 11:28:06,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 53 remaining) [2022-12-13 11:28:06,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 53 remaining) [2022-12-13 11:28:06,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 53 remaining) [2022-12-13 11:28:06,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 53 remaining) [2022-12-13 11:28:06,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 53 remaining) [2022-12-13 11:28:06,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 53 remaining) [2022-12-13 11:28:06,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 53 remaining) [2022-12-13 11:28:06,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 53 remaining) [2022-12-13 11:28:06,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 53 remaining) [2022-12-13 11:28:06,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 53 remaining) [2022-12-13 11:28:06,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 53 remaining) [2022-12-13 11:28:06,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 11:28:06,931 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:28:06,936 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 11:28:06,936 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 11:28:06,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 11:28:06 BasicIcfg [2022-12-13 11:28:06,939 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 11:28:06,939 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 11:28:06,939 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 11:28:06,939 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 11:28:06,939 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:27:27" (3/4) ... [2022-12-13 11:28:06,941 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 11:28:06,946 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 11:28:06,946 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 11:28:06,946 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-12-13 11:28:06,950 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2022-12-13 11:28:06,950 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 11:28:06,951 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 11:28:06,951 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 11:28:06,983 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 11:28:06,983 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 11:28:06,984 INFO L158 Benchmark]: Toolchain (without parser) took 40584.84ms. Allocated memory was 138.4MB in the beginning and 2.7GB in the end (delta: 2.6GB). Free memory was 104.8MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 835.8MB. Max. memory is 16.1GB. [2022-12-13 11:28:06,984 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 138.4MB. Free memory is still 79.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 11:28:06,984 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.34ms. Allocated memory is still 138.4MB. Free memory was 104.8MB in the beginning and 91.6MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 11:28:06,985 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.06ms. Allocated memory is still 138.4MB. Free memory was 91.6MB in the beginning and 89.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 11:28:06,985 INFO L158 Benchmark]: Boogie Preprocessor took 24.56ms. Allocated memory is still 138.4MB. Free memory was 89.0MB in the beginning and 86.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 11:28:06,985 INFO L158 Benchmark]: RCFGBuilder took 568.10ms. Allocated memory is still 138.4MB. Free memory was 86.9MB in the beginning and 57.5MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-12-13 11:28:06,986 INFO L158 Benchmark]: TraceAbstraction took 39721.43ms. Allocated memory was 138.4MB in the beginning and 2.7GB in the end (delta: 2.6GB). Free memory was 56.5MB in the beginning and 1.8GB in the end (delta: -1.8GB). Peak memory consumption was 783.4MB. Max. memory is 16.1GB. [2022-12-13 11:28:06,986 INFO L158 Benchmark]: Witness Printer took 44.38ms. Allocated memory is still 2.7GB. Free memory was 1.8GB in the beginning and 1.8GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 11:28:06,988 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 138.4MB. Free memory is still 79.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 189.34ms. Allocated memory is still 138.4MB. Free memory was 104.8MB in the beginning and 91.6MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.06ms. Allocated memory is still 138.4MB. Free memory was 91.6MB in the beginning and 89.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.56ms. Allocated memory is still 138.4MB. Free memory was 89.0MB in the beginning and 86.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 568.10ms. Allocated memory is still 138.4MB. Free memory was 86.9MB in the beginning and 57.5MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 39721.43ms. Allocated memory was 138.4MB in the beginning and 2.7GB in the end (delta: 2.6GB). Free memory was 56.5MB in the beginning and 1.8GB in the end (delta: -1.8GB). Peak memory consumption was 783.4MB. Max. memory is 16.1GB. * Witness Printer took 44.38ms. Allocated memory is still 2.7GB. Free memory was 1.8GB in the beginning and 1.8GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 18.0s, 411 PlacesBefore, 54 PlacesAfterwards, 432 TransitionsBefore, 48 TransitionsAfterwards, 62208 CoEnabledTransitionPairs, 8 FixpointIterations, 121 TrivialSequentialCompositions, 332 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 71 ConcurrentYvCompositions, 27 ChoiceCompositions, 560 TotalNumberOfCompositions, 57673 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 57210, independent: 57187, independent conditional: 0, independent unconditional: 57187, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 36544, independent: 36529, independent conditional: 0, independent unconditional: 36529, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 57210, independent: 20658, independent conditional: 0, independent unconditional: 20658, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 36544, unknown conditional: 0, unknown unconditional: 36544] , Statistics on independence cache: Total cache size (in pairs): 160, Positive cache size: 158, Positive conditional cache size: 0, Positive unconditional cache size: 158, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 152]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 152]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 692 locations, 53 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 39.6s, OverallIterations: 18, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 18.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 18.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1190 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 893 mSDsluCounter, 50 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 58 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1530 IncrementalHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 58 mSolverCounterUnsat, 50 mSDtfsCounter, 1530 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=141occurred in iteration=4, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 189 NumberOfCodeBlocks, 185 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 173 ConstructedInterpolants, 0 QuantifiedInterpolants, 409 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1128 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 26 InterpolantComputations, 16 PerfectInterpolantSequences, 102/112 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 26 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 11:28:07,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69c68cbf-53f2-4eac-b3ab-954554c5869a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE