./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8 --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 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df --- 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-e04fb08 [2022-11-16 12:09:30,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:09:30,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:09:30,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:09:30,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:09:30,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:09:30,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:09:30,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:09:30,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:09:30,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:09:30,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:09:30,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:09:30,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:09:30,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:09:30,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:09:30,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:09:30,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:09:30,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:09:30,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:09:30,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:09:31,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:09:31,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:09:31,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:09:31,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:09:31,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:09:31,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:09:31,020 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:09:31,021 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:09:31,022 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:09:31,023 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:09:31,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:09:31,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:09:31,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:09:31,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:09:31,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:09:31,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:09:31,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:09:31,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:09:31,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:09:31,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:09:31,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:09:31,033 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:09:31,074 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:09:31,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:09:31,075 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:09:31,076 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:09:31,076 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:09:31,077 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:09:31,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:09:31,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:09:31,078 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:09:31,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:09:31,079 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:09:31,079 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:09:31,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:09:31,080 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:09:31,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:09:31,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:09:31,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:09:31,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:09:31,081 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:09:31,081 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:09:31,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:09:31,081 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:09:31,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:09:31,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:09:31,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:09:31,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:09:31,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:09:31,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:09:31,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:09:31,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:09:31,085 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:09:31,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:09:31,085 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:09:31,085 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:09:31,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:09:31,086 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df [2022-11-16 12:09:31,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:09:31,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:09:31,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:09:31,401 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:09:31,401 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:09:31,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2022-11-16 12:09:31,470 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/data/48f71fa7f/3b064b1342d3478d9c1317187b34be7d/FLAG7b1c389df [2022-11-16 12:09:32,044 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:09:32,049 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2022-11-16 12:09:32,073 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/data/48f71fa7f/3b064b1342d3478d9c1317187b34be7d/FLAG7b1c389df [2022-11-16 12:09:32,299 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/data/48f71fa7f/3b064b1342d3478d9c1317187b34be7d [2022-11-16 12:09:32,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:09:32,303 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:09:32,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:09:32,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:09:32,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:09:32,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:09:32" (1/1) ... [2022-11-16 12:09:32,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12fe9f29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:32, skipping insertion in model container [2022-11-16 12:09:32,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:09:32" (1/1) ... [2022-11-16 12:09:32,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:09:32,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:09:32,861 WARN L229 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_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i[41323,41336] [2022-11-16 12:09:32,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:09:32,898 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:09:32,930 WARN L229 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_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i[41323,41336] [2022-11-16 12:09:32,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:09:33,016 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:09:33,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:33 WrapperNode [2022-11-16 12:09:33,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:09:33,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:09:33,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:09:33,018 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:09:33,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:33" (1/1) ... [2022-11-16 12:09:33,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:33" (1/1) ... [2022-11-16 12:09:33,095 INFO L138 Inliner]: procedures = 270, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 200 [2022-11-16 12:09:33,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:09:33,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:09:33,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:09:33,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:09:33,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:33" (1/1) ... [2022-11-16 12:09:33,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:33" (1/1) ... [2022-11-16 12:09:33,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:33" (1/1) ... [2022-11-16 12:09:33,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:33" (1/1) ... [2022-11-16 12:09:33,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:33" (1/1) ... [2022-11-16 12:09:33,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:33" (1/1) ... [2022-11-16 12:09:33,128 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:33" (1/1) ... [2022-11-16 12:09:33,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:33" (1/1) ... [2022-11-16 12:09:33,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:09:33,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:09:33,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:09:33,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:09:33,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:33" (1/1) ... [2022-11-16 12:09:33,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:09:33,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:33,167 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:09:33,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:09:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:09:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:09:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:09:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:09:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:09:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:09:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 12:09:33,210 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 12:09:33,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:09:33,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:09:33,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:09:33,212 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:09:33,403 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:09:33,405 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:09:33,888 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:09:33,897 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:09:33,897 INFO L300 CfgBuilder]: Removed 23 assume(true) statements. [2022-11-16 12:09:33,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:09:33 BoogieIcfgContainer [2022-11-16 12:09:33,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:09:33,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:09:33,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:09:33,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:09:33,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:09:32" (1/3) ... [2022-11-16 12:09:33,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d19f6e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:09:33, skipping insertion in model container [2022-11-16 12:09:33,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:09:33" (2/3) ... [2022-11-16 12:09:33,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d19f6e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:09:33, skipping insertion in model container [2022-11-16 12:09:33,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:09:33" (3/3) ... [2022-11-16 12:09:33,910 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_75-tricky_address2_racefree.i [2022-11-16 12:09:33,919 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:09:33,930 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:09:33,930 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-16 12:09:33,930 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:09:34,059 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 12:09:34,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 223 transitions, 454 flow [2022-11-16 12:09:34,267 INFO L130 PetriNetUnfolder]: 45/302 cut-off events. [2022-11-16 12:09:34,267 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-16 12:09:34,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 302 events. 45/302 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1038 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 165. Up to 8 conditions per place. [2022-11-16 12:09:34,278 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 223 transitions, 454 flow [2022-11-16 12:09:34,286 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 220 transitions, 448 flow [2022-11-16 12:09:34,314 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:09:34,320 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;@1c059e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:09:34,320 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-16 12:09:34,326 INFO L130 PetriNetUnfolder]: 1/30 cut-off events. [2022-11-16 12:09:34,326 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:09:34,326 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:34,327 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:34,328 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:09:34,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:34,333 INFO L85 PathProgramCache]: Analyzing trace with hash -729273671, now seen corresponding path program 1 times [2022-11-16 12:09:34,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:34,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915827162] [2022-11-16 12:09:34,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:34,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:34,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:34,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:34,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915827162] [2022-11-16 12:09:34,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915827162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:34,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:34,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:09:34,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207428869] [2022-11-16 12:09:34,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:34,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:09:34,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:34,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:09:34,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:09:34,801 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 223 [2022-11-16 12:09:34,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 220 transitions, 448 flow. Second operand has 4 states, 4 states have (on average 181.5) internal successors, (726), 4 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:34,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:34,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 223 [2022-11-16 12:09:34,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:34,952 INFO L130 PetriNetUnfolder]: 4/263 cut-off events. [2022-11-16 12:09:34,952 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-16 12:09:34,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 263 events. 4/263 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 784 event pairs, 0 based on Foata normal form. 39/272 useless extension candidates. Maximal degree in co-relation 140. Up to 15 conditions per place. [2022-11-16 12:09:34,961 INFO L137 encePairwiseOnDemand]: 189/223 looper letters, 17 selfloop transitions, 4 changer transitions 1/198 dead transitions. [2022-11-16 12:09:34,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 198 transitions, 446 flow [2022-11-16 12:09:34,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:09:34,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:09:34,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 952 transitions. [2022-11-16 12:09:34,979 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8538116591928251 [2022-11-16 12:09:34,980 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 952 transitions. [2022-11-16 12:09:34,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 952 transitions. [2022-11-16 12:09:34,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:34,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 952 transitions. [2022-11-16 12:09:34,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 190.4) internal successors, (952), 5 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:35,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:35,005 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:35,007 INFO L175 Difference]: Start difference. First operand has 193 places, 220 transitions, 448 flow. Second operand 5 states and 952 transitions. [2022-11-16 12:09:35,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 198 transitions, 446 flow [2022-11-16 12:09:35,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 198 transitions, 446 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:09:35,016 INFO L231 Difference]: Finished difference. Result has 198 places, 193 transitions, 420 flow [2022-11-16 12:09:35,018 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=420, PETRI_PLACES=198, PETRI_TRANSITIONS=193} [2022-11-16 12:09:35,021 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 5 predicate places. [2022-11-16 12:09:35,022 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 193 transitions, 420 flow [2022-11-16 12:09:35,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.5) internal successors, (726), 4 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:35,023 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:35,023 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:35,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:09:35,024 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:09:35,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:35,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1620695023, now seen corresponding path program 1 times [2022-11-16 12:09:35,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:35,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010220668] [2022-11-16 12:09:35,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:35,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:35,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:09:35,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:35,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010220668] [2022-11-16 12:09:35,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010220668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:35,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:35,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:09:35,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782049852] [2022-11-16 12:09:35,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:35,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:09:35,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:35,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:09:35,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:09:35,117 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 223 [2022-11-16 12:09:35,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 193 transitions, 420 flow. Second operand has 4 states, 4 states have (on average 183.25) internal successors, (733), 4 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:35,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:35,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 223 [2022-11-16 12:09:35,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:35,220 INFO L130 PetriNetUnfolder]: 4/261 cut-off events. [2022-11-16 12:09:35,220 INFO L131 PetriNetUnfolder]: For 8/9 co-relation queries the response was YES. [2022-11-16 12:09:35,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 261 events. 4/261 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 780 event pairs, 0 based on Foata normal form. 1/236 useless extension candidates. Maximal degree in co-relation 251. Up to 7 conditions per place. [2022-11-16 12:09:35,222 INFO L137 encePairwiseOnDemand]: 217/223 looper letters, 9 selfloop transitions, 8 changer transitions 0/193 dead transitions. [2022-11-16 12:09:35,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 193 transitions, 452 flow [2022-11-16 12:09:35,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:09:35,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:09:35,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 915 transitions. [2022-11-16 12:09:35,227 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.820627802690583 [2022-11-16 12:09:35,227 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 915 transitions. [2022-11-16 12:09:35,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 915 transitions. [2022-11-16 12:09:35,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:35,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 915 transitions. [2022-11-16 12:09:35,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 183.0) internal successors, (915), 5 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:35,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:35,234 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:35,235 INFO L175 Difference]: Start difference. First operand has 198 places, 193 transitions, 420 flow. Second operand 5 states and 915 transitions. [2022-11-16 12:09:35,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 193 transitions, 452 flow [2022-11-16 12:09:35,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 193 transitions, 450 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:09:35,246 INFO L231 Difference]: Finished difference. Result has 200 places, 193 transitions, 438 flow [2022-11-16 12:09:35,246 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=438, PETRI_PLACES=200, PETRI_TRANSITIONS=193} [2022-11-16 12:09:35,247 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 7 predicate places. [2022-11-16 12:09:35,247 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 193 transitions, 438 flow [2022-11-16 12:09:35,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 183.25) internal successors, (733), 4 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:35,248 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:35,249 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:35,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:09:35,249 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:09:35,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:35,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1298061306, now seen corresponding path program 1 times [2022-11-16 12:09:35,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:35,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679642704] [2022-11-16 12:09:35,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:35,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:35,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:35,393 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:35,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:35,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679642704] [2022-11-16 12:09:35,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679642704] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:35,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129987599] [2022-11-16 12:09:35,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:35,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:35,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:35,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:35,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:09:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:35,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:09:35,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:35,617 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:35,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:09:35,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129987599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:35,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:09:35,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 12:09:35,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353230002] [2022-11-16 12:09:35,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:35,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:09:35,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:35,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:09:35,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:09:35,627 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 223 [2022-11-16 12:09:35,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 193 transitions, 438 flow. Second operand has 5 states, 5 states have (on average 182.8) internal successors, (914), 5 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:35,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:35,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 223 [2022-11-16 12:09:35,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:35,720 INFO L130 PetriNetUnfolder]: 4/260 cut-off events. [2022-11-16 12:09:35,720 INFO L131 PetriNetUnfolder]: For 15/16 co-relation queries the response was YES. [2022-11-16 12:09:35,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 260 events. 4/260 cut-off events. For 15/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 773 event pairs, 0 based on Foata normal form. 1/235 useless extension candidates. Maximal degree in co-relation 249. Up to 10 conditions per place. [2022-11-16 12:09:35,723 INFO L137 encePairwiseOnDemand]: 219/223 looper letters, 11 selfloop transitions, 5 changer transitions 0/192 dead transitions. [2022-11-16 12:09:35,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 192 transitions, 466 flow [2022-11-16 12:09:35,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:09:35,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:09:35,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 733 transitions. [2022-11-16 12:09:35,725 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8217488789237668 [2022-11-16 12:09:35,725 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 733 transitions. [2022-11-16 12:09:35,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 733 transitions. [2022-11-16 12:09:35,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:35,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 733 transitions. [2022-11-16 12:09:35,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 183.25) internal successors, (733), 4 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:35,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 223.0) internal successors, (1115), 5 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:35,731 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 223.0) internal successors, (1115), 5 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:35,732 INFO L175 Difference]: Start difference. First operand has 200 places, 193 transitions, 438 flow. Second operand 4 states and 733 transitions. [2022-11-16 12:09:35,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 192 transitions, 466 flow [2022-11-16 12:09:35,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 192 transitions, 454 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:09:35,740 INFO L231 Difference]: Finished difference. Result has 199 places, 192 transitions, 432 flow [2022-11-16 12:09:35,740 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=432, PETRI_PLACES=199, PETRI_TRANSITIONS=192} [2022-11-16 12:09:35,743 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 6 predicate places. [2022-11-16 12:09:35,743 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 192 transitions, 432 flow [2022-11-16 12:09:35,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 182.8) internal successors, (914), 5 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:35,744 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:35,744 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:35,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:35,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:35,949 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:09:35,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:35,950 INFO L85 PathProgramCache]: Analyzing trace with hash 950229597, now seen corresponding path program 1 times [2022-11-16 12:09:35,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:35,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937636687] [2022-11-16 12:09:35,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:35,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:36,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:36,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:36,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937636687] [2022-11-16 12:09:36,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937636687] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:36,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050834177] [2022-11-16 12:09:36,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:36,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:36,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:36,127 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:36,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:09:36,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:36,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:09:36,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:36,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:36,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:36,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:36,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050834177] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:36,302 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:09:36,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 12:09:36,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341313895] [2022-11-16 12:09:36,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:36,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:09:36,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:36,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:09:36,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:09:36,306 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 223 [2022-11-16 12:09:36,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 192 transitions, 432 flow. Second operand has 10 states, 10 states have (on average 182.7) internal successors, (1827), 10 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:36,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:36,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 223 [2022-11-16 12:09:36,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:36,462 INFO L130 PetriNetUnfolder]: 4/268 cut-off events. [2022-11-16 12:09:36,463 INFO L131 PetriNetUnfolder]: For 21/22 co-relation queries the response was YES. [2022-11-16 12:09:36,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 268 events. 4/268 cut-off events. For 21/22 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 763 event pairs, 0 based on Foata normal form. 2/244 useless extension candidates. Maximal degree in co-relation 239. Up to 7 conditions per place. [2022-11-16 12:09:36,465 INFO L137 encePairwiseOnDemand]: 217/223 looper letters, 18 selfloop transitions, 9 changer transitions 0/203 dead transitions. [2022-11-16 12:09:36,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 203 transitions, 524 flow [2022-11-16 12:09:36,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:09:36,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:09:36,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1649 transitions. [2022-11-16 12:09:36,471 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8216243148978575 [2022-11-16 12:09:36,471 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1649 transitions. [2022-11-16 12:09:36,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1649 transitions. [2022-11-16 12:09:36,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:36,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1649 transitions. [2022-11-16 12:09:36,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 183.22222222222223) internal successors, (1649), 9 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:36,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 223.0) internal successors, (2230), 10 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:36,486 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 223.0) internal successors, (2230), 10 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:36,486 INFO L175 Difference]: Start difference. First operand has 199 places, 192 transitions, 432 flow. Second operand 9 states and 1649 transitions. [2022-11-16 12:09:36,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 203 transitions, 524 flow [2022-11-16 12:09:36,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 203 transitions, 510 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:09:36,492 INFO L231 Difference]: Finished difference. Result has 208 places, 196 transitions, 478 flow [2022-11-16 12:09:36,493 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=478, PETRI_PLACES=208, PETRI_TRANSITIONS=196} [2022-11-16 12:09:36,494 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 15 predicate places. [2022-11-16 12:09:36,494 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 196 transitions, 478 flow [2022-11-16 12:09:36,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 182.7) internal successors, (1827), 10 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:36,495 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:36,496 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:36,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:36,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:36,703 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:09:36,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:36,703 INFO L85 PathProgramCache]: Analyzing trace with hash -283872867, now seen corresponding path program 2 times [2022-11-16 12:09:36,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:36,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472688223] [2022-11-16 12:09:36,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:36,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:36,885 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 12:09:36,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:36,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472688223] [2022-11-16 12:09:36,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472688223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:36,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:36,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:09:36,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702890135] [2022-11-16 12:09:36,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:36,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:09:36,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:36,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:09:36,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:09:36,888 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 223 [2022-11-16 12:09:36,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 196 transitions, 478 flow. Second operand has 4 states, 4 states have (on average 181.75) internal successors, (727), 4 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:36,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:36,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 223 [2022-11-16 12:09:36,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:36,965 INFO L130 PetriNetUnfolder]: 3/205 cut-off events. [2022-11-16 12:09:36,965 INFO L131 PetriNetUnfolder]: For 31/40 co-relation queries the response was YES. [2022-11-16 12:09:36,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 205 events. 3/205 cut-off events. For 31/40 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 389 event pairs, 0 based on Foata normal form. 3/192 useless extension candidates. Maximal degree in co-relation 188. Up to 7 conditions per place. [2022-11-16 12:09:36,967 INFO L137 encePairwiseOnDemand]: 216/223 looper letters, 10 selfloop transitions, 4 changer transitions 0/196 dead transitions. [2022-11-16 12:09:36,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 196 transitions, 506 flow [2022-11-16 12:09:36,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:09:36,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:09:36,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 917 transitions. [2022-11-16 12:09:36,970 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8224215246636771 [2022-11-16 12:09:36,970 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 917 transitions. [2022-11-16 12:09:36,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 917 transitions. [2022-11-16 12:09:36,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:36,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 917 transitions. [2022-11-16 12:09:36,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 183.4) internal successors, (917), 5 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:36,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:36,976 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:36,976 INFO L175 Difference]: Start difference. First operand has 208 places, 196 transitions, 478 flow. Second operand 5 states and 917 transitions. [2022-11-16 12:09:36,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 196 transitions, 506 flow [2022-11-16 12:09:36,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 196 transitions, 490 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-16 12:09:36,983 INFO L231 Difference]: Finished difference. Result has 207 places, 194 transitions, 470 flow [2022-11-16 12:09:36,984 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=470, PETRI_PLACES=207, PETRI_TRANSITIONS=194} [2022-11-16 12:09:36,986 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 14 predicate places. [2022-11-16 12:09:36,987 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 194 transitions, 470 flow [2022-11-16 12:09:36,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.75) internal successors, (727), 4 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:36,987 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:36,987 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:36,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:09:36,988 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:09:36,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:36,988 INFO L85 PathProgramCache]: Analyzing trace with hash -635128358, now seen corresponding path program 1 times [2022-11-16 12:09:36,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:36,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663045064] [2022-11-16 12:09:36,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:36,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:37,206 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:09:37,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:37,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663045064] [2022-11-16 12:09:37,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663045064] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:37,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122689882] [2022-11-16 12:09:37,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:37,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:37,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:37,209 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:37,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:09:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:37,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:09:37,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:37,416 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:09:37,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:37,548 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:09:37,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122689882] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:37,548 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:09:37,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 12:09:37,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763602697] [2022-11-16 12:09:37,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:37,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:09:37,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:37,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:09:37,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:09:37,557 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 223 [2022-11-16 12:09:37,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 194 transitions, 470 flow. Second operand has 18 states, 18 states have (on average 183.05555555555554) internal successors, (3295), 18 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:37,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:37,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 223 [2022-11-16 12:09:37,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:37,847 INFO L130 PetriNetUnfolder]: 3/233 cut-off events. [2022-11-16 12:09:37,847 INFO L131 PetriNetUnfolder]: For 58/59 co-relation queries the response was YES. [2022-11-16 12:09:37,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 233 events. 3/233 cut-off events. For 58/59 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 396 event pairs, 0 based on Foata normal form. 4/222 useless extension candidates. Maximal degree in co-relation 216. Up to 9 conditions per place. [2022-11-16 12:09:37,849 INFO L137 encePairwiseOnDemand]: 217/223 looper letters, 34 selfloop transitions, 21 changer transitions 0/229 dead transitions. [2022-11-16 12:09:37,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 229 transitions, 734 flow [2022-11-16 12:09:37,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:09:37,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:09:37,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3839 transitions. [2022-11-16 12:09:37,857 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8197736493700619 [2022-11-16 12:09:37,858 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3839 transitions. [2022-11-16 12:09:37,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3839 transitions. [2022-11-16 12:09:37,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:37,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3839 transitions. [2022-11-16 12:09:37,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 182.8095238095238) internal successors, (3839), 21 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:37,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 223.0) internal successors, (4906), 22 states have internal predecessors, (4906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:37,879 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 223.0) internal successors, (4906), 22 states have internal predecessors, (4906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:37,879 INFO L175 Difference]: Start difference. First operand has 207 places, 194 transitions, 470 flow. Second operand 21 states and 3839 transitions. [2022-11-16 12:09:37,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 229 transitions, 734 flow [2022-11-16 12:09:37,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 229 transitions, 726 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:09:37,885 INFO L231 Difference]: Finished difference. Result has 228 places, 207 transitions, 618 flow [2022-11-16 12:09:37,885 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=618, PETRI_PLACES=228, PETRI_TRANSITIONS=207} [2022-11-16 12:09:37,886 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 35 predicate places. [2022-11-16 12:09:37,886 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 207 transitions, 618 flow [2022-11-16 12:09:37,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 183.05555555555554) internal successors, (3295), 18 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:37,888 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:37,888 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:37,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:38,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:38,094 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:09:38,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:38,094 INFO L85 PathProgramCache]: Analyzing trace with hash -957918118, now seen corresponding path program 2 times [2022-11-16 12:09:38,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:38,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900796628] [2022-11-16 12:09:38,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:38,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:38,473 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:09:38,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:38,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900796628] [2022-11-16 12:09:38,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900796628] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:38,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975559956] [2022-11-16 12:09:38,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:09:38,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:38,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:38,475 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:38,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:09:38,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:09:38,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:09:38,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:09:38,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:38,708 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:09:38,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:38,960 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:09:38,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975559956] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:38,961 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:09:38,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-16 12:09:38,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711969316] [2022-11-16 12:09:38,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:38,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:09:38,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:38,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:09:38,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:09:38,968 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 223 [2022-11-16 12:09:38,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 207 transitions, 618 flow. Second operand has 23 states, 23 states have (on average 183.30434782608697) internal successors, (4216), 23 states have internal predecessors, (4216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:38,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:38,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 223 [2022-11-16 12:09:38,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:39,378 INFO L130 PetriNetUnfolder]: 3/254 cut-off events. [2022-11-16 12:09:39,379 INFO L131 PetriNetUnfolder]: For 225/226 co-relation queries the response was YES. [2022-11-16 12:09:39,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 510 conditions, 254 events. 3/254 cut-off events. For 225/226 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 396 event pairs, 0 based on Foata normal form. 3/242 useless extension candidates. Maximal degree in co-relation 342. Up to 12 conditions per place. [2022-11-16 12:09:39,381 INFO L137 encePairwiseOnDemand]: 217/223 looper letters, 46 selfloop transitions, 30 changer transitions 0/250 dead transitions. [2022-11-16 12:09:39,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 250 transitions, 980 flow [2022-11-16 12:09:39,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 12:09:39,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 12:09:39,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5479 transitions. [2022-11-16 12:09:39,392 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.81898355754858 [2022-11-16 12:09:39,392 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 5479 transitions. [2022-11-16 12:09:39,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 5479 transitions. [2022-11-16 12:09:39,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:39,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 5479 transitions. [2022-11-16 12:09:39,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 182.63333333333333) internal successors, (5479), 30 states have internal predecessors, (5479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:39,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 223.0) internal successors, (6913), 31 states have internal predecessors, (6913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:39,450 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 223.0) internal successors, (6913), 31 states have internal predecessors, (6913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:39,450 INFO L175 Difference]: Start difference. First operand has 228 places, 207 transitions, 618 flow. Second operand 30 states and 5479 transitions. [2022-11-16 12:09:39,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 250 transitions, 980 flow [2022-11-16 12:09:39,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 250 transitions, 900 flow, removed 32 selfloop flow, removed 8 redundant places. [2022-11-16 12:09:39,457 INFO L231 Difference]: Finished difference. Result has 253 places, 217 transitions, 716 flow [2022-11-16 12:09:39,458 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=716, PETRI_PLACES=253, PETRI_TRANSITIONS=217} [2022-11-16 12:09:39,459 INFO L288 CegarLoopForPetriNet]: 193 programPoint places, 60 predicate places. [2022-11-16 12:09:39,459 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 217 transitions, 716 flow [2022-11-16 12:09:39,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 183.30434782608697) internal successors, (4216), 23 states have internal predecessors, (4216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:39,461 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:39,461 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:39,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:39,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:39,667 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:09:39,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:39,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1973266736, now seen corresponding path program 3 times [2022-11-16 12:09:39,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:39,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989864098] [2022-11-16 12:09:39,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:39,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:09:39,705 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:09:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:09:39,751 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:09:39,752 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:09:39,753 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-11-16 12:09:39,754 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2022-11-16 12:09:39,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2022-11-16 12:09:39,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2022-11-16 12:09:39,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2022-11-16 12:09:39,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2022-11-16 12:09:39,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2022-11-16 12:09:39,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2022-11-16 12:09:39,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2022-11-16 12:09:39,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2022-11-16 12:09:39,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2022-11-16 12:09:39,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2022-11-16 12:09:39,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2022-11-16 12:09:39,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2022-11-16 12:09:39,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2022-11-16 12:09:39,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2022-11-16 12:09:39,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2022-11-16 12:09:39,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2022-11-16 12:09:39,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2022-11-16 12:09:39,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:09:39,758 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2022-11-16 12:09:39,760 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:09:39,760 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 12:09:39,807 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:09:39,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 262 places, 302 transitions, 622 flow [2022-11-16 12:09:39,876 INFO L130 PetriNetUnfolder]: 75/497 cut-off events. [2022-11-16 12:09:39,876 INFO L131 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2022-11-16 12:09:39,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 497 events. 75/497 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2069 event pairs, 0 based on Foata normal form. 0/386 useless extension candidates. Maximal degree in co-relation 304. Up to 12 conditions per place. [2022-11-16 12:09:39,880 INFO L82 GeneralOperation]: Start removeDead. Operand has 262 places, 302 transitions, 622 flow [2022-11-16 12:09:39,886 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 262 places, 302 transitions, 622 flow [2022-11-16 12:09:39,887 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:09:39,888 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;@1c059e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:09:39,888 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-16 12:09:39,890 INFO L130 PetriNetUnfolder]: 1/30 cut-off events. [2022-11-16 12:09:39,891 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:09:39,891 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:39,891 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:39,891 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:09:39,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:39,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1575634649, now seen corresponding path program 1 times [2022-11-16 12:09:39,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:39,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167868041] [2022-11-16 12:09:39,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:39,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:39,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:39,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:39,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167868041] [2022-11-16 12:09:39,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167868041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:39,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:39,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:09:39,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037974268] [2022-11-16 12:09:39,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:39,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:09:39,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:39,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:09:39,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:09:39,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-16 12:09:39,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 302 transitions, 622 flow. Second operand has 4 states, 4 states have (on average 245.5) internal successors, (982), 4 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:39,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:39,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-16 12:09:39,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:40,056 INFO L130 PetriNetUnfolder]: 9/433 cut-off events. [2022-11-16 12:09:40,056 INFO L131 PetriNetUnfolder]: For 19/23 co-relation queries the response was YES. [2022-11-16 12:09:40,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 433 events. 9/433 cut-off events. For 19/23 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1707 event pairs, 0 based on Foata normal form. 90/470 useless extension candidates. Maximal degree in co-relation 289. Up to 19 conditions per place. [2022-11-16 12:09:40,061 INFO L137 encePairwiseOnDemand]: 256/302 looper letters, 19 selfloop transitions, 4 changer transitions 1/267 dead transitions. [2022-11-16 12:09:40,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 267 transitions, 598 flow [2022-11-16 12:09:40,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:09:40,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:09:40,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1286 transitions. [2022-11-16 12:09:40,065 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8516556291390729 [2022-11-16 12:09:40,065 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1286 transitions. [2022-11-16 12:09:40,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1286 transitions. [2022-11-16 12:09:40,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:40,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1286 transitions. [2022-11-16 12:09:40,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 257.2) internal successors, (1286), 5 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) [2022-11-16 12:09:40,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:40,073 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:40,074 INFO L175 Difference]: Start difference. First operand has 262 places, 302 transitions, 622 flow. Second operand 5 states and 1286 transitions. [2022-11-16 12:09:40,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 267 transitions, 598 flow [2022-11-16 12:09:40,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 267 transitions, 598 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:09:40,080 INFO L231 Difference]: Finished difference. Result has 266 places, 262 transitions, 568 flow [2022-11-16 12:09:40,080 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=568, PETRI_PLACES=266, PETRI_TRANSITIONS=262} [2022-11-16 12:09:40,081 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 4 predicate places. [2022-11-16 12:09:40,081 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 262 transitions, 568 flow [2022-11-16 12:09:40,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 245.5) internal successors, (982), 4 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:40,081 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:40,082 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:40,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:09:40,082 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:09:40,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:40,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1338975825, now seen corresponding path program 1 times [2022-11-16 12:09:40,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:40,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97152963] [2022-11-16 12:09:40,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:40,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:40,123 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:09:40,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:40,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97152963] [2022-11-16 12:09:40,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97152963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:40,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:40,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:09:40,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445406852] [2022-11-16 12:09:40,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:40,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:09:40,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:40,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:09:40,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:09:40,126 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-16 12:09:40,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 262 transitions, 568 flow. Second operand has 4 states, 4 states have (on average 247.25) internal successors, (989), 4 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:40,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:40,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-16 12:09:40,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:40,240 INFO L130 PetriNetUnfolder]: 9/431 cut-off events. [2022-11-16 12:09:40,240 INFO L131 PetriNetUnfolder]: For 22/26 co-relation queries the response was YES. [2022-11-16 12:09:40,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 431 events. 9/431 cut-off events. For 22/26 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1703 event pairs, 0 based on Foata normal form. 1/383 useless extension candidates. Maximal degree in co-relation 432. Up to 11 conditions per place. [2022-11-16 12:09:40,245 INFO L137 encePairwiseOnDemand]: 296/302 looper letters, 11 selfloop transitions, 8 changer transitions 0/262 dead transitions. [2022-11-16 12:09:40,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 262 transitions, 604 flow [2022-11-16 12:09:40,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:09:40,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:09:40,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1237 transitions. [2022-11-16 12:09:40,248 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.819205298013245 [2022-11-16 12:09:40,248 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1237 transitions. [2022-11-16 12:09:40,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1237 transitions. [2022-11-16 12:09:40,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:40,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1237 transitions. [2022-11-16 12:09:40,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 247.4) internal successors, (1237), 5 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:40,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:40,255 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:40,255 INFO L175 Difference]: Start difference. First operand has 266 places, 262 transitions, 568 flow. Second operand 5 states and 1237 transitions. [2022-11-16 12:09:40,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 262 transitions, 604 flow [2022-11-16 12:09:40,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 262 transitions, 602 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:09:40,261 INFO L231 Difference]: Finished difference. Result has 268 places, 262 transitions, 586 flow [2022-11-16 12:09:40,261 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=586, PETRI_PLACES=268, PETRI_TRANSITIONS=262} [2022-11-16 12:09:40,262 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 6 predicate places. [2022-11-16 12:09:40,262 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 262 transitions, 586 flow [2022-11-16 12:09:40,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 247.25) internal successors, (989), 4 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:40,263 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:40,263 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:40,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:09:40,263 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:09:40,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:40,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1441423220, now seen corresponding path program 1 times [2022-11-16 12:09:40,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:40,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970142032] [2022-11-16 12:09:40,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:40,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:40,323 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:40,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:40,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970142032] [2022-11-16 12:09:40,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970142032] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:40,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430933571] [2022-11-16 12:09:40,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:40,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:40,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:40,325 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:40,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:09:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:40,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:09:40,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:40,461 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:40,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:09:40,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430933571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:40,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:09:40,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 12:09:40,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850371828] [2022-11-16 12:09:40,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:40,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:09:40,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:40,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:09:40,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:09:40,464 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-16 12:09:40,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 262 transitions, 586 flow. Second operand has 5 states, 5 states have (on average 246.8) internal successors, (1234), 5 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:40,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:40,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-16 12:09:40,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:40,562 INFO L130 PetriNetUnfolder]: 9/430 cut-off events. [2022-11-16 12:09:40,562 INFO L131 PetriNetUnfolder]: For 29/33 co-relation queries the response was YES. [2022-11-16 12:09:40,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 430 events. 9/430 cut-off events. For 29/33 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1704 event pairs, 0 based on Foata normal form. 1/382 useless extension candidates. Maximal degree in co-relation 430. Up to 14 conditions per place. [2022-11-16 12:09:40,567 INFO L137 encePairwiseOnDemand]: 298/302 looper letters, 13 selfloop transitions, 5 changer transitions 0/261 dead transitions. [2022-11-16 12:09:40,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 261 transitions, 618 flow [2022-11-16 12:09:40,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:09:40,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:09:40,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 991 transitions. [2022-11-16 12:09:40,570 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.820364238410596 [2022-11-16 12:09:40,570 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 991 transitions. [2022-11-16 12:09:40,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 991 transitions. [2022-11-16 12:09:40,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:40,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 991 transitions. [2022-11-16 12:09:40,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:40,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:40,575 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:40,576 INFO L175 Difference]: Start difference. First operand has 268 places, 262 transitions, 586 flow. Second operand 4 states and 991 transitions. [2022-11-16 12:09:40,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 261 transitions, 618 flow [2022-11-16 12:09:40,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 261 transitions, 606 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:09:40,581 INFO L231 Difference]: Finished difference. Result has 267 places, 261 transitions, 580 flow [2022-11-16 12:09:40,582 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=580, PETRI_PLACES=267, PETRI_TRANSITIONS=261} [2022-11-16 12:09:40,583 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 5 predicate places. [2022-11-16 12:09:40,583 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 261 transitions, 580 flow [2022-11-16 12:09:40,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 246.8) internal successors, (1234), 5 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:40,586 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:40,586 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:40,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:40,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 12:09:40,791 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:09:40,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:40,791 INFO L85 PathProgramCache]: Analyzing trace with hash 460715416, now seen corresponding path program 1 times [2022-11-16 12:09:40,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:40,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881122996] [2022-11-16 12:09:40,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:40,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:40,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:40,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:40,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881122996] [2022-11-16 12:09:40,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881122996] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:40,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627522525] [2022-11-16 12:09:40,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:40,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:40,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:40,874 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:40,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:09:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:40,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:09:40,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:41,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:41,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:41,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:41,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627522525] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:41,044 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:09:41,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 12:09:41,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696682884] [2022-11-16 12:09:41,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:41,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:09:41,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:41,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:09:41,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:09:41,049 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-16 12:09:41,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 261 transitions, 580 flow. Second operand has 10 states, 10 states have (on average 246.7) internal successors, (2467), 10 states have internal predecessors, (2467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:41,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:41,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-16 12:09:41,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:41,204 INFO L130 PetriNetUnfolder]: 9/438 cut-off events. [2022-11-16 12:09:41,204 INFO L131 PetriNetUnfolder]: For 35/39 co-relation queries the response was YES. [2022-11-16 12:09:41,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 438 events. 9/438 cut-off events. For 35/39 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1699 event pairs, 0 based on Foata normal form. 2/391 useless extension candidates. Maximal degree in co-relation 420. Up to 11 conditions per place. [2022-11-16 12:09:41,210 INFO L137 encePairwiseOnDemand]: 296/302 looper letters, 20 selfloop transitions, 9 changer transitions 0/272 dead transitions. [2022-11-16 12:09:41,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 272 transitions, 676 flow [2022-11-16 12:09:41,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:09:41,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:09:41,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2227 transitions. [2022-11-16 12:09:41,216 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8193524650478293 [2022-11-16 12:09:41,216 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2227 transitions. [2022-11-16 12:09:41,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2227 transitions. [2022-11-16 12:09:41,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:41,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2227 transitions. [2022-11-16 12:09:41,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 247.44444444444446) internal successors, (2227), 9 states have internal predecessors, (2227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:41,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 302.0) internal successors, (3020), 10 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:41,229 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 302.0) internal successors, (3020), 10 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:41,230 INFO L175 Difference]: Start difference. First operand has 267 places, 261 transitions, 580 flow. Second operand 9 states and 2227 transitions. [2022-11-16 12:09:41,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 272 transitions, 676 flow [2022-11-16 12:09:41,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 272 transitions, 662 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:09:41,235 INFO L231 Difference]: Finished difference. Result has 276 places, 265 transitions, 626 flow [2022-11-16 12:09:41,236 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=626, PETRI_PLACES=276, PETRI_TRANSITIONS=265} [2022-11-16 12:09:41,237 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 14 predicate places. [2022-11-16 12:09:41,237 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 265 transitions, 626 flow [2022-11-16 12:09:41,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 246.7) internal successors, (2467), 10 states have internal predecessors, (2467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:41,238 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:41,238 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:41,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:41,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:41,452 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:09:41,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:41,452 INFO L85 PathProgramCache]: Analyzing trace with hash -604189544, now seen corresponding path program 2 times [2022-11-16 12:09:41,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:41,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327512508] [2022-11-16 12:09:41,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:41,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:41,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:41,518 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 12:09:41,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:41,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327512508] [2022-11-16 12:09:41,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327512508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:41,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:41,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:09:41,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028075112] [2022-11-16 12:09:41,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:41,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:09:41,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:41,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:09:41,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:09:41,521 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-16 12:09:41,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 265 transitions, 626 flow. Second operand has 4 states, 4 states have (on average 245.75) internal successors, (983), 4 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:41,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:41,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-16 12:09:41,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:41,636 INFO L130 PetriNetUnfolder]: 7/384 cut-off events. [2022-11-16 12:09:41,637 INFO L131 PetriNetUnfolder]: For 53/95 co-relation queries the response was YES. [2022-11-16 12:09:41,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 384 events. 7/384 cut-off events. For 53/95 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1323 event pairs, 0 based on Foata normal form. 3/347 useless extension candidates. Maximal degree in co-relation 388. Up to 21 conditions per place. [2022-11-16 12:09:41,642 INFO L137 encePairwiseOnDemand]: 295/302 looper letters, 19 selfloop transitions, 4 changer transitions 0/272 dead transitions. [2022-11-16 12:09:41,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 272 transitions, 686 flow [2022-11-16 12:09:41,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:09:41,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:09:41,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1246 transitions. [2022-11-16 12:09:41,647 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8251655629139073 [2022-11-16 12:09:41,647 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1246 transitions. [2022-11-16 12:09:41,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1246 transitions. [2022-11-16 12:09:41,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:41,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1246 transitions. [2022-11-16 12:09:41,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 249.2) internal successors, (1246), 5 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:41,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:41,653 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:41,653 INFO L175 Difference]: Start difference. First operand has 276 places, 265 transitions, 626 flow. Second operand 5 states and 1246 transitions. [2022-11-16 12:09:41,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 272 transitions, 686 flow [2022-11-16 12:09:41,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 272 transitions, 670 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-16 12:09:41,659 INFO L231 Difference]: Finished difference. Result has 279 places, 268 transitions, 642 flow [2022-11-16 12:09:41,660 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=642, PETRI_PLACES=279, PETRI_TRANSITIONS=268} [2022-11-16 12:09:41,660 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 17 predicate places. [2022-11-16 12:09:41,660 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 268 transitions, 642 flow [2022-11-16 12:09:41,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 245.75) internal successors, (983), 4 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:41,661 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:41,661 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:41,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:09:41,662 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:09:41,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:41,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1003419068, now seen corresponding path program 1 times [2022-11-16 12:09:41,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:41,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454716547] [2022-11-16 12:09:41,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:41,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:41,744 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-16 12:09:41,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:41,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454716547] [2022-11-16 12:09:41,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454716547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:41,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:41,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:09:41,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688788300] [2022-11-16 12:09:41,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:41,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:09:41,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:41,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:09:41,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:09:41,749 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-16 12:09:41,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 268 transitions, 642 flow. Second operand has 4 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:41,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:41,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-16 12:09:41,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:41,849 INFO L130 PetriNetUnfolder]: 7/383 cut-off events. [2022-11-16 12:09:41,849 INFO L131 PetriNetUnfolder]: For 48/87 co-relation queries the response was YES. [2022-11-16 12:09:41,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 383 events. 7/383 cut-off events. For 48/87 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1320 event pairs, 0 based on Foata normal form. 7/354 useless extension candidates. Maximal degree in co-relation 395. Up to 10 conditions per place. [2022-11-16 12:09:41,855 INFO L137 encePairwiseOnDemand]: 296/302 looper letters, 11 selfloop transitions, 8 changer transitions 0/268 dead transitions. [2022-11-16 12:09:41,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 268 transitions, 678 flow [2022-11-16 12:09:41,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:09:41,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:09:41,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1237 transitions. [2022-11-16 12:09:41,858 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.819205298013245 [2022-11-16 12:09:41,858 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1237 transitions. [2022-11-16 12:09:41,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1237 transitions. [2022-11-16 12:09:41,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:41,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1237 transitions. [2022-11-16 12:09:41,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 247.4) internal successors, (1237), 5 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:41,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:41,864 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:41,864 INFO L175 Difference]: Start difference. First operand has 279 places, 268 transitions, 642 flow. Second operand 5 states and 1237 transitions. [2022-11-16 12:09:41,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 268 transitions, 678 flow [2022-11-16 12:09:41,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 268 transitions, 676 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:09:41,870 INFO L231 Difference]: Finished difference. Result has 282 places, 268 transitions, 660 flow [2022-11-16 12:09:41,871 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=660, PETRI_PLACES=282, PETRI_TRANSITIONS=268} [2022-11-16 12:09:41,872 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 20 predicate places. [2022-11-16 12:09:41,872 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 268 transitions, 660 flow [2022-11-16 12:09:41,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:41,873 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:41,873 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:41,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:09:41,874 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:09:41,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:41,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1041219272, now seen corresponding path program 1 times [2022-11-16 12:09:41,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:41,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829976237] [2022-11-16 12:09:41,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:41,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:41,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:42,034 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:09:42,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:42,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829976237] [2022-11-16 12:09:42,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829976237] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:42,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221179390] [2022-11-16 12:09:42,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:42,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:42,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:42,037 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:42,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:09:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:42,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:09:42,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:42,193 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:09:42,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:42,317 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:09:42,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221179390] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:42,318 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:09:42,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 12:09:42,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391971639] [2022-11-16 12:09:42,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:42,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:09:42,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:42,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:09:42,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:09:42,323 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-16 12:09:42,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 268 transitions, 660 flow. Second operand has 18 states, 18 states have (on average 247.11111111111111) internal successors, (4448), 18 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:42,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:42,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-16 12:09:42,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:42,653 INFO L130 PetriNetUnfolder]: 7/411 cut-off events. [2022-11-16 12:09:42,654 INFO L131 PetriNetUnfolder]: For 81/85 co-relation queries the response was YES. [2022-11-16 12:09:42,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 411 events. 7/411 cut-off events. For 81/85 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1315 event pairs, 0 based on Foata normal form. 4/379 useless extension candidates. Maximal degree in co-relation 390. Up to 11 conditions per place. [2022-11-16 12:09:42,659 INFO L137 encePairwiseOnDemand]: 296/302 looper letters, 36 selfloop transitions, 21 changer transitions 0/303 dead transitions. [2022-11-16 12:09:42,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 303 transitions, 928 flow [2022-11-16 12:09:42,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:09:42,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:09:42,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5185 transitions. [2022-11-16 12:09:42,669 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8175654367707348 [2022-11-16 12:09:42,670 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5185 transitions. [2022-11-16 12:09:42,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5185 transitions. [2022-11-16 12:09:42,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:42,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5185 transitions. [2022-11-16 12:09:42,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 246.9047619047619) internal successors, (5185), 21 states have internal predecessors, (5185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:42,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 302.0) internal successors, (6644), 22 states have internal predecessors, (6644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:42,702 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 302.0) internal successors, (6644), 22 states have internal predecessors, (6644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:42,703 INFO L175 Difference]: Start difference. First operand has 282 places, 268 transitions, 660 flow. Second operand 21 states and 5185 transitions. [2022-11-16 12:09:42,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 303 transitions, 928 flow [2022-11-16 12:09:42,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 303 transitions, 916 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:09:42,711 INFO L231 Difference]: Finished difference. Result has 304 places, 281 transitions, 804 flow [2022-11-16 12:09:42,712 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=804, PETRI_PLACES=304, PETRI_TRANSITIONS=281} [2022-11-16 12:09:42,712 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 42 predicate places. [2022-11-16 12:09:42,712 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 281 transitions, 804 flow [2022-11-16 12:09:42,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 247.11111111111111) internal successors, (4448), 18 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:42,714 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:42,714 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:42,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:42,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 12:09:42,920 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:09:42,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:42,920 INFO L85 PathProgramCache]: Analyzing trace with hash 2024936248, now seen corresponding path program 2 times [2022-11-16 12:09:42,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:42,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085495614] [2022-11-16 12:09:42,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:42,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:43,258 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:09:43,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:43,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085495614] [2022-11-16 12:09:43,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085495614] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:43,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363860558] [2022-11-16 12:09:43,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:09:43,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:43,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:43,271 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:43,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:09:43,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:09:43,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:09:43,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:09:43,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:43,516 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:09:43,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:43,758 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:09:43,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363860558] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:43,759 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:09:43,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-16 12:09:43,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11923063] [2022-11-16 12:09:43,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:43,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:09:43,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:43,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:09:43,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:09:43,766 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-16 12:09:43,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 281 transitions, 804 flow. Second operand has 23 states, 23 states have (on average 247.34782608695653) internal successors, (5689), 23 states have internal predecessors, (5689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:43,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:43,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-16 12:09:43,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:44,221 INFO L130 PetriNetUnfolder]: 7/432 cut-off events. [2022-11-16 12:09:44,221 INFO L131 PetriNetUnfolder]: For 243/247 co-relation queries the response was YES. [2022-11-16 12:09:44,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 719 conditions, 432 events. 7/432 cut-off events. For 243/247 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1317 event pairs, 0 based on Foata normal form. 3/399 useless extension candidates. Maximal degree in co-relation 513. Up to 12 conditions per place. [2022-11-16 12:09:44,226 INFO L137 encePairwiseOnDemand]: 296/302 looper letters, 48 selfloop transitions, 30 changer transitions 0/324 dead transitions. [2022-11-16 12:09:44,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 324 transitions, 1170 flow [2022-11-16 12:09:44,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 12:09:44,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 12:09:44,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7401 transitions. [2022-11-16 12:09:44,236 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8168874172185431 [2022-11-16 12:09:44,236 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7401 transitions. [2022-11-16 12:09:44,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7401 transitions. [2022-11-16 12:09:44,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:44,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7401 transitions. [2022-11-16 12:09:44,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 246.7) internal successors, (7401), 30 states have internal predecessors, (7401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:44,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 302.0) internal successors, (9362), 31 states have internal predecessors, (9362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:44,265 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 302.0) internal successors, (9362), 31 states have internal predecessors, (9362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:44,265 INFO L175 Difference]: Start difference. First operand has 304 places, 281 transitions, 804 flow. Second operand 30 states and 7401 transitions. [2022-11-16 12:09:44,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 324 transitions, 1170 flow [2022-11-16 12:09:44,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 324 transitions, 1090 flow, removed 32 selfloop flow, removed 8 redundant places. [2022-11-16 12:09:44,274 INFO L231 Difference]: Finished difference. Result has 329 places, 291 transitions, 902 flow [2022-11-16 12:09:44,275 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=902, PETRI_PLACES=329, PETRI_TRANSITIONS=291} [2022-11-16 12:09:44,275 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 67 predicate places. [2022-11-16 12:09:44,275 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 291 transitions, 902 flow [2022-11-16 12:09:44,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 247.34782608695653) internal successors, (5689), 23 states have internal predecessors, (5689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:44,277 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:44,278 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:44,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:44,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 12:09:44,483 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:09:44,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:44,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1096394928, now seen corresponding path program 3 times [2022-11-16 12:09:44,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:44,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623771781] [2022-11-16 12:09:44,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:44,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:44,656 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:09:44,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:44,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623771781] [2022-11-16 12:09:44,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623771781] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:44,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323952752] [2022-11-16 12:09:44,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:09:44,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:44,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:44,659 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:44,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:09:44,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 12:09:44,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:09:44,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:09:44,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:44,824 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:09:44,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:09:44,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323952752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:44,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:09:44,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 12:09:44,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194945439] [2022-11-16 12:09:44,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:44,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:09:44,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:44,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:09:44,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:09:44,829 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-16 12:09:44,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 291 transitions, 902 flow. Second operand has 5 states, 5 states have (on average 247.2) internal successors, (1236), 5 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:44,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:44,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-16 12:09:44,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:44,946 INFO L130 PetriNetUnfolder]: 7/431 cut-off events. [2022-11-16 12:09:44,947 INFO L131 PetriNetUnfolder]: For 213/249 co-relation queries the response was YES. [2022-11-16 12:09:44,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 431 events. 7/431 cut-off events. For 213/249 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1323 event pairs, 0 based on Foata normal form. 3/398 useless extension candidates. Maximal degree in co-relation 454. Up to 17 conditions per place. [2022-11-16 12:09:44,952 INFO L137 encePairwiseOnDemand]: 298/302 looper letters, 13 selfloop transitions, 5 changer transitions 0/290 dead transitions. [2022-11-16 12:09:44,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 290 transitions, 934 flow [2022-11-16 12:09:44,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:09:44,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:09:44,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 991 transitions. [2022-11-16 12:09:44,954 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.820364238410596 [2022-11-16 12:09:44,954 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 991 transitions. [2022-11-16 12:09:44,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 991 transitions. [2022-11-16 12:09:44,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:44,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 991 transitions. [2022-11-16 12:09:44,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 247.75) internal successors, (991), 4 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:44,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:44,960 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:44,960 INFO L175 Difference]: Start difference. First operand has 329 places, 291 transitions, 902 flow. Second operand 4 states and 991 transitions. [2022-11-16 12:09:44,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 290 transitions, 934 flow [2022-11-16 12:09:44,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 290 transitions, 888 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-16 12:09:44,968 INFO L231 Difference]: Finished difference. Result has 313 places, 290 transitions, 862 flow [2022-11-16 12:09:44,969 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=862, PETRI_PLACES=313, PETRI_TRANSITIONS=290} [2022-11-16 12:09:44,969 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, 51 predicate places. [2022-11-16 12:09:44,969 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 290 transitions, 862 flow [2022-11-16 12:09:44,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 247.2) internal successors, (1236), 5 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:44,970 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:44,970 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:44,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:45,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 12:09:45,176 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:09:45,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:45,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1921684219, now seen corresponding path program 1 times [2022-11-16 12:09:45,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:45,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405050712] [2022-11-16 12:09:45,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:45,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:45,288 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:09:45,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:45,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405050712] [2022-11-16 12:09:45,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405050712] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:45,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654249118] [2022-11-16 12:09:45,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:45,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:45,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:45,290 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:45,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:09:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:45,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:09:45,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:45,473 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:09:45,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:45,513 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:09:45,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654249118] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:45,513 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:09:45,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 12:09:45,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689869470] [2022-11-16 12:09:45,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:45,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:09:45,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:45,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:09:45,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:09:45,517 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 302 [2022-11-16 12:09:45,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 290 transitions, 862 flow. Second operand has 10 states, 10 states have (on average 246.9) internal successors, (2469), 10 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:45,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:45,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 302 [2022-11-16 12:09:45,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:45,642 INFO L130 PetriNetUnfolder]: 3/263 cut-off events. [2022-11-16 12:09:45,642 INFO L131 PetriNetUnfolder]: For 198/198 co-relation queries the response was YES. [2022-11-16 12:09:45,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 263 events. 3/263 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 357 event pairs, 0 based on Foata normal form. 2/251 useless extension candidates. Maximal degree in co-relation 351. Up to 12 conditions per place. [2022-11-16 12:09:45,645 INFO L137 encePairwiseOnDemand]: 297/302 looper letters, 13 selfloop transitions, 7 changer transitions 0/224 dead transitions. [2022-11-16 12:09:45,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 224 transitions, 764 flow [2022-11-16 12:09:45,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:09:45,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:09:45,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2218 transitions. [2022-11-16 12:09:45,649 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8160412067696836 [2022-11-16 12:09:45,649 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2218 transitions. [2022-11-16 12:09:45,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2218 transitions. [2022-11-16 12:09:45,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:45,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2218 transitions. [2022-11-16 12:09:45,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 246.44444444444446) internal successors, (2218), 9 states have internal predecessors, (2218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:45,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 302.0) internal successors, (3020), 10 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:45,658 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 302.0) internal successors, (3020), 10 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:45,658 INFO L175 Difference]: Start difference. First operand has 313 places, 290 transitions, 862 flow. Second operand 9 states and 2218 transitions. [2022-11-16 12:09:45,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 224 transitions, 764 flow [2022-11-16 12:09:45,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 224 transitions, 752 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-16 12:09:45,665 INFO L231 Difference]: Finished difference. Result has 250 places, 219 transitions, 714 flow [2022-11-16 12:09:45,665 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=714, PETRI_PLACES=250, PETRI_TRANSITIONS=219} [2022-11-16 12:09:45,666 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, -12 predicate places. [2022-11-16 12:09:45,666 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 219 transitions, 714 flow [2022-11-16 12:09:45,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 246.9) internal successors, (2469), 10 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:45,667 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:45,667 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:45,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:45,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 12:09:45,873 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:09:45,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:45,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1265664375, now seen corresponding path program 1 times [2022-11-16 12:09:45,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:45,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914077096] [2022-11-16 12:09:45,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:45,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:46,426 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:09:46,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:46,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914077096] [2022-11-16 12:09:46,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914077096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:46,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:46,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:09:46,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979538617] [2022-11-16 12:09:46,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:46,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:09:46,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:46,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:09:46,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:09:46,431 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 302 [2022-11-16 12:09:46,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 219 transitions, 714 flow. Second operand has 10 states, 10 states have (on average 209.5) internal successors, (2095), 10 states have internal predecessors, (2095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:46,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:46,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 302 [2022-11-16 12:09:46,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:47,112 INFO L130 PetriNetUnfolder]: 336/1915 cut-off events. [2022-11-16 12:09:47,113 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2022-11-16 12:09:47,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2813 conditions, 1915 events. 336/1915 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 15079 event pairs, 91 based on Foata normal form. 0/1770 useless extension candidates. Maximal degree in co-relation 2546. Up to 291 conditions per place. [2022-11-16 12:09:47,128 INFO L137 encePairwiseOnDemand]: 290/302 looper letters, 80 selfloop transitions, 13 changer transitions 0/271 dead transitions. [2022-11-16 12:09:47,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 271 transitions, 1029 flow [2022-11-16 12:09:47,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:09:47,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:09:47,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2374 transitions. [2022-11-16 12:09:47,133 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7146297411198074 [2022-11-16 12:09:47,133 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2374 transitions. [2022-11-16 12:09:47,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2374 transitions. [2022-11-16 12:09:47,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:47,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2374 transitions. [2022-11-16 12:09:47,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 215.8181818181818) internal successors, (2374), 11 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:47,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 302.0) internal successors, (3624), 12 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:47,143 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 302.0) internal successors, (3624), 12 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:47,144 INFO L175 Difference]: Start difference. First operand has 250 places, 219 transitions, 714 flow. Second operand 11 states and 2374 transitions. [2022-11-16 12:09:47,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 271 transitions, 1029 flow [2022-11-16 12:09:47,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 271 transitions, 1006 flow, removed 3 selfloop flow, removed 8 redundant places. [2022-11-16 12:09:47,192 INFO L231 Difference]: Finished difference. Result has 257 places, 228 transitions, 774 flow [2022-11-16 12:09:47,193 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=774, PETRI_PLACES=257, PETRI_TRANSITIONS=228} [2022-11-16 12:09:47,193 INFO L288 CegarLoopForPetriNet]: 262 programPoint places, -5 predicate places. [2022-11-16 12:09:47,193 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 228 transitions, 774 flow [2022-11-16 12:09:47,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 209.5) internal successors, (2095), 10 states have internal predecessors, (2095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:47,194 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:47,194 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:47,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 12:09:47,195 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:09:47,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:47,195 INFO L85 PathProgramCache]: Analyzing trace with hash -2002685866, now seen corresponding path program 1 times [2022-11-16 12:09:47,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:47,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769888010] [2022-11-16 12:09:47,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:47,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:09:47,234 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:09:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:09:47,273 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:09:47,273 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:09:47,273 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2022-11-16 12:09:47,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2022-11-16 12:09:47,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2022-11-16 12:09:47,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2022-11-16 12:09:47,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2022-11-16 12:09:47,274 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2022-11-16 12:09:47,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2022-11-16 12:09:47,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2022-11-16 12:09:47,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2022-11-16 12:09:47,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2022-11-16 12:09:47,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2022-11-16 12:09:47,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2022-11-16 12:09:47,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2022-11-16 12:09:47,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2022-11-16 12:09:47,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2022-11-16 12:09:47,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2022-11-16 12:09:47,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2022-11-16 12:09:47,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2022-11-16 12:09:47,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2022-11-16 12:09:47,278 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2022-11-16 12:09:47,278 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2022-11-16 12:09:47,278 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2022-11-16 12:09:47,278 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2022-11-16 12:09:47,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 12:09:47,279 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:47,279 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:09:47,280 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-16 12:09:47,322 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:09:47,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 329 places, 381 transitions, 792 flow [2022-11-16 12:09:47,473 INFO L130 PetriNetUnfolder]: 110/733 cut-off events. [2022-11-16 12:09:47,473 INFO L131 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2022-11-16 12:09:47,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 733 events. 110/733 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3393 event pairs, 1 based on Foata normal form. 0/569 useless extension candidates. Maximal degree in co-relation 505. Up to 16 conditions per place. [2022-11-16 12:09:47,482 INFO L82 GeneralOperation]: Start removeDead. Operand has 329 places, 381 transitions, 792 flow [2022-11-16 12:09:47,493 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 329 places, 381 transitions, 792 flow [2022-11-16 12:09:47,494 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:09:47,495 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;@1c059e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:09:47,495 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-11-16 12:09:47,497 INFO L130 PetriNetUnfolder]: 1/30 cut-off events. [2022-11-16 12:09:47,497 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:09:47,497 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:47,497 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:47,498 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 12:09:47,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:47,498 INFO L85 PathProgramCache]: Analyzing trace with hash 343171972, now seen corresponding path program 1 times [2022-11-16 12:09:47,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:47,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96755339] [2022-11-16 12:09:47,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:47,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:47,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:47,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:47,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96755339] [2022-11-16 12:09:47,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96755339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:47,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:47,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:09:47,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446931528] [2022-11-16 12:09:47,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:47,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:09:47,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:47,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:09:47,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:09:47,531 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-16 12:09:47,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 381 transitions, 792 flow. Second operand has 4 states, 4 states have (on average 309.5) internal successors, (1238), 4 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:47,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:47,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-16 12:09:47,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:47,699 INFO L130 PetriNetUnfolder]: 16/639 cut-off events. [2022-11-16 12:09:47,700 INFO L131 PetriNetUnfolder]: For 55/69 co-relation queries the response was YES. [2022-11-16 12:09:47,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 702 conditions, 639 events. 16/639 cut-off events. For 55/69 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2954 event pairs, 1 based on Foata normal form. 208/766 useless extension candidates. Maximal degree in co-relation 466. Up to 28 conditions per place. [2022-11-16 12:09:47,710 INFO L137 encePairwiseOnDemand]: 323/381 looper letters, 21 selfloop transitions, 4 changer transitions 1/333 dead transitions. [2022-11-16 12:09:47,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 333 transitions, 746 flow [2022-11-16 12:09:47,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:09:47,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:09:47,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1620 transitions. [2022-11-16 12:09:47,713 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8503937007874016 [2022-11-16 12:09:47,713 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1620 transitions. [2022-11-16 12:09:47,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1620 transitions. [2022-11-16 12:09:47,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:47,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1620 transitions. [2022-11-16 12:09:47,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 324.0) internal successors, (1620), 5 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:47,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:47,720 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:47,720 INFO L175 Difference]: Start difference. First operand has 329 places, 381 transitions, 792 flow. Second operand 5 states and 1620 transitions. [2022-11-16 12:09:47,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 333 transitions, 746 flow [2022-11-16 12:09:47,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 333 transitions, 746 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:09:47,726 INFO L231 Difference]: Finished difference. Result has 332 places, 328 transitions, 712 flow [2022-11-16 12:09:47,727 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=712, PETRI_PLACES=332, PETRI_TRANSITIONS=328} [2022-11-16 12:09:47,727 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 3 predicate places. [2022-11-16 12:09:47,728 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 328 transitions, 712 flow [2022-11-16 12:09:47,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 309.5) internal successors, (1238), 4 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:47,728 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:47,728 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:47,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 12:09:47,729 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 12:09:47,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:47,729 INFO L85 PathProgramCache]: Analyzing trace with hash 388285263, now seen corresponding path program 1 times [2022-11-16 12:09:47,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:47,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462335246] [2022-11-16 12:09:47,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:47,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:47,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:09:47,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:47,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462335246] [2022-11-16 12:09:47,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462335246] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:47,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:47,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:09:47,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569007862] [2022-11-16 12:09:47,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:47,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:09:47,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:47,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:09:47,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:09:47,815 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-16 12:09:47,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 328 transitions, 712 flow. Second operand has 4 states, 4 states have (on average 311.25) internal successors, (1245), 4 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:47,816 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:47,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-16 12:09:47,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:47,972 INFO L130 PetriNetUnfolder]: 16/637 cut-off events. [2022-11-16 12:09:47,973 INFO L131 PetriNetUnfolder]: For 58/72 co-relation queries the response was YES. [2022-11-16 12:09:47,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 637 events. 16/637 cut-off events. For 58/72 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2931 event pairs, 1 based on Foata normal form. 1/561 useless extension candidates. Maximal degree in co-relation 660. Up to 20 conditions per place. [2022-11-16 12:09:47,983 INFO L137 encePairwiseOnDemand]: 375/381 looper letters, 13 selfloop transitions, 8 changer transitions 0/328 dead transitions. [2022-11-16 12:09:47,983 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 328 transitions, 752 flow [2022-11-16 12:09:47,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:09:47,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:09:47,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1559 transitions. [2022-11-16 12:09:47,986 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8183727034120735 [2022-11-16 12:09:47,986 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1559 transitions. [2022-11-16 12:09:47,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1559 transitions. [2022-11-16 12:09:47,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:47,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1559 transitions. [2022-11-16 12:09:47,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.8) internal successors, (1559), 5 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:47,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:47,993 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:47,993 INFO L175 Difference]: Start difference. First operand has 332 places, 328 transitions, 712 flow. Second operand 5 states and 1559 transitions. [2022-11-16 12:09:47,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 328 transitions, 752 flow [2022-11-16 12:09:47,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 328 transitions, 750 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:09:47,999 INFO L231 Difference]: Finished difference. Result has 334 places, 328 transitions, 730 flow [2022-11-16 12:09:48,000 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=730, PETRI_PLACES=334, PETRI_TRANSITIONS=328} [2022-11-16 12:09:48,000 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 5 predicate places. [2022-11-16 12:09:48,000 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 328 transitions, 730 flow [2022-11-16 12:09:48,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 311.25) internal successors, (1245), 4 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:48,001 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:48,001 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:48,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 12:09:48,001 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 12:09:48,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:48,002 INFO L85 PathProgramCache]: Analyzing trace with hash -848057519, now seen corresponding path program 1 times [2022-11-16 12:09:48,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:48,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819879689] [2022-11-16 12:09:48,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:48,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:48,050 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:48,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:48,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819879689] [2022-11-16 12:09:48,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819879689] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:48,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693223776] [2022-11-16 12:09:48,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:48,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:48,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:48,055 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:48,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:09:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:48,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:09:48,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:48,197 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:48,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:09:48,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693223776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:48,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:09:48,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 12:09:48,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310717168] [2022-11-16 12:09:48,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:48,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:09:48,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:48,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:09:48,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:09:48,201 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-16 12:09:48,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 328 transitions, 730 flow. Second operand has 5 states, 5 states have (on average 310.8) internal successors, (1554), 5 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:48,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:48,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-16 12:09:48,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:48,377 INFO L130 PetriNetUnfolder]: 16/636 cut-off events. [2022-11-16 12:09:48,377 INFO L131 PetriNetUnfolder]: For 65/79 co-relation queries the response was YES. [2022-11-16 12:09:48,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 636 events. 16/636 cut-off events. For 65/79 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2919 event pairs, 1 based on Foata normal form. 1/560 useless extension candidates. Maximal degree in co-relation 658. Up to 23 conditions per place. [2022-11-16 12:09:48,387 INFO L137 encePairwiseOnDemand]: 377/381 looper letters, 15 selfloop transitions, 5 changer transitions 0/327 dead transitions. [2022-11-16 12:09:48,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 327 transitions, 766 flow [2022-11-16 12:09:48,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:09:48,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:09:48,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1249 transitions. [2022-11-16 12:09:48,390 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8195538057742782 [2022-11-16 12:09:48,390 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1249 transitions. [2022-11-16 12:09:48,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1249 transitions. [2022-11-16 12:09:48,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:48,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1249 transitions. [2022-11-16 12:09:48,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 312.25) internal successors, (1249), 4 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:48,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 381.0) internal successors, (1905), 5 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:48,395 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 381.0) internal successors, (1905), 5 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:48,396 INFO L175 Difference]: Start difference. First operand has 334 places, 328 transitions, 730 flow. Second operand 4 states and 1249 transitions. [2022-11-16 12:09:48,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 327 transitions, 766 flow [2022-11-16 12:09:48,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 327 transitions, 754 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:09:48,402 INFO L231 Difference]: Finished difference. Result has 333 places, 327 transitions, 724 flow [2022-11-16 12:09:48,403 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=724, PETRI_PLACES=333, PETRI_TRANSITIONS=327} [2022-11-16 12:09:48,403 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 4 predicate places. [2022-11-16 12:09:48,403 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 327 transitions, 724 flow [2022-11-16 12:09:48,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 310.8) internal successors, (1554), 5 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:48,404 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:48,404 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:48,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:48,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:48,614 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 12:09:48,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:48,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1725622718, now seen corresponding path program 1 times [2022-11-16 12:09:48,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:48,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462566854] [2022-11-16 12:09:48,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:48,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:48,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:48,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:48,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462566854] [2022-11-16 12:09:48,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462566854] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:48,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574248699] [2022-11-16 12:09:48,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:48,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:48,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:48,712 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:48,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 12:09:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:48,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:09:48,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:48,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:48,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:48,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:48,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574248699] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:48,908 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:09:48,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 12:09:48,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347976773] [2022-11-16 12:09:48,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:48,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:09:48,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:48,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:09:48,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:09:48,915 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-16 12:09:48,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 327 transitions, 724 flow. Second operand has 10 states, 10 states have (on average 310.7) internal successors, (3107), 10 states have internal predecessors, (3107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:48,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:48,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-16 12:09:48,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:49,145 INFO L130 PetriNetUnfolder]: 16/644 cut-off events. [2022-11-16 12:09:49,146 INFO L131 PetriNetUnfolder]: For 71/85 co-relation queries the response was YES. [2022-11-16 12:09:49,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 746 conditions, 644 events. 16/644 cut-off events. For 71/85 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2910 event pairs, 1 based on Foata normal form. 2/569 useless extension candidates. Maximal degree in co-relation 648. Up to 20 conditions per place. [2022-11-16 12:09:49,155 INFO L137 encePairwiseOnDemand]: 375/381 looper letters, 22 selfloop transitions, 9 changer transitions 0/338 dead transitions. [2022-11-16 12:09:49,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 338 transitions, 824 flow [2022-11-16 12:09:49,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:09:49,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:09:49,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2805 transitions. [2022-11-16 12:09:49,160 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8180227471566054 [2022-11-16 12:09:49,160 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2805 transitions. [2022-11-16 12:09:49,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2805 transitions. [2022-11-16 12:09:49,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:49,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2805 transitions. [2022-11-16 12:09:49,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 311.6666666666667) internal successors, (2805), 9 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:49,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 381.0) internal successors, (3810), 10 states have internal predecessors, (3810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:49,171 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 381.0) internal successors, (3810), 10 states have internal predecessors, (3810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:49,171 INFO L175 Difference]: Start difference. First operand has 333 places, 327 transitions, 724 flow. Second operand 9 states and 2805 transitions. [2022-11-16 12:09:49,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 338 transitions, 824 flow [2022-11-16 12:09:49,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 338 transitions, 810 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:09:49,178 INFO L231 Difference]: Finished difference. Result has 342 places, 331 transitions, 770 flow [2022-11-16 12:09:49,178 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=770, PETRI_PLACES=342, PETRI_TRANSITIONS=331} [2022-11-16 12:09:49,179 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 13 predicate places. [2022-11-16 12:09:49,179 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 331 transitions, 770 flow [2022-11-16 12:09:49,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 310.7) internal successors, (3107), 10 states have internal predecessors, (3107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:49,180 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:49,180 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:49,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:49,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-16 12:09:49,386 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 12:09:49,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:49,386 INFO L85 PathProgramCache]: Analyzing trace with hash -671355934, now seen corresponding path program 2 times [2022-11-16 12:09:49,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:49,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601707314] [2022-11-16 12:09:49,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:49,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:49,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:49,440 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 12:09:49,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:49,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601707314] [2022-11-16 12:09:49,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601707314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:49,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:49,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:09:49,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703901457] [2022-11-16 12:09:49,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:49,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:09:49,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:49,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:09:49,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:09:49,443 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-16 12:09:49,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 331 transitions, 770 flow. Second operand has 4 states, 4 states have (on average 309.75) internal successors, (1239), 4 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:49,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:49,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-16 12:09:49,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:49,622 INFO L130 PetriNetUnfolder]: 14/590 cut-off events. [2022-11-16 12:09:49,622 INFO L131 PetriNetUnfolder]: For 133/308 co-relation queries the response was YES. [2022-11-16 12:09:49,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 590 events. 14/590 cut-off events. For 133/308 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2557 event pairs, 1 based on Foata normal form. 3/525 useless extension candidates. Maximal degree in co-relation 626. Up to 40 conditions per place. [2022-11-16 12:09:49,631 INFO L137 encePairwiseOnDemand]: 374/381 looper letters, 21 selfloop transitions, 4 changer transitions 0/338 dead transitions. [2022-11-16 12:09:49,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 338 transitions, 834 flow [2022-11-16 12:09:49,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:09:49,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:09:49,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1568 transitions. [2022-11-16 12:09:49,636 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8230971128608924 [2022-11-16 12:09:49,636 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1568 transitions. [2022-11-16 12:09:49,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1568 transitions. [2022-11-16 12:09:49,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:49,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1568 transitions. [2022-11-16 12:09:49,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 313.6) internal successors, (1568), 5 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:49,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:49,643 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:49,643 INFO L175 Difference]: Start difference. First operand has 342 places, 331 transitions, 770 flow. Second operand 5 states and 1568 transitions. [2022-11-16 12:09:49,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 338 transitions, 834 flow [2022-11-16 12:09:49,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 338 transitions, 818 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-16 12:09:49,650 INFO L231 Difference]: Finished difference. Result has 345 places, 334 transitions, 786 flow [2022-11-16 12:09:49,650 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=786, PETRI_PLACES=345, PETRI_TRANSITIONS=334} [2022-11-16 12:09:49,651 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 16 predicate places. [2022-11-16 12:09:49,652 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 334 transitions, 786 flow [2022-11-16 12:09:49,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 309.75) internal successors, (1239), 4 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:49,652 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:49,653 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:49,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 12:09:49,653 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 12:09:49,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:49,653 INFO L85 PathProgramCache]: Analyzing trace with hash -921263589, now seen corresponding path program 1 times [2022-11-16 12:09:49,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:49,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390497331] [2022-11-16 12:09:49,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:49,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:49,723 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-16 12:09:49,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:49,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390497331] [2022-11-16 12:09:49,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390497331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:49,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:49,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:09:49,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574516396] [2022-11-16 12:09:49,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:49,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:09:49,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:49,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:09:49,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:09:49,726 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-16 12:09:49,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 334 transitions, 786 flow. Second operand has 4 states, 4 states have (on average 311.75) internal successors, (1247), 4 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:49,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:49,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-16 12:09:49,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:49,895 INFO L130 PetriNetUnfolder]: 14/588 cut-off events. [2022-11-16 12:09:49,895 INFO L131 PetriNetUnfolder]: For 125/286 co-relation queries the response was YES. [2022-11-16 12:09:49,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 724 conditions, 588 events. 14/588 cut-off events. For 125/286 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2537 event pairs, 1 based on Foata normal form. 11/538 useless extension candidates. Maximal degree in co-relation 636. Up to 20 conditions per place. [2022-11-16 12:09:49,905 INFO L137 encePairwiseOnDemand]: 375/381 looper letters, 13 selfloop transitions, 8 changer transitions 0/334 dead transitions. [2022-11-16 12:09:49,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 334 transitions, 826 flow [2022-11-16 12:09:49,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:09:49,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:09:49,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1559 transitions. [2022-11-16 12:09:49,908 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8183727034120735 [2022-11-16 12:09:49,909 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1559 transitions. [2022-11-16 12:09:49,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1559 transitions. [2022-11-16 12:09:49,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:49,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1559 transitions. [2022-11-16 12:09:49,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.8) internal successors, (1559), 5 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:49,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:49,915 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:49,916 INFO L175 Difference]: Start difference. First operand has 345 places, 334 transitions, 786 flow. Second operand 5 states and 1559 transitions. [2022-11-16 12:09:49,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 334 transitions, 826 flow [2022-11-16 12:09:49,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 334 transitions, 824 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:09:49,923 INFO L231 Difference]: Finished difference. Result has 348 places, 334 transitions, 804 flow [2022-11-16 12:09:49,923 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=804, PETRI_PLACES=348, PETRI_TRANSITIONS=334} [2022-11-16 12:09:49,924 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 19 predicate places. [2022-11-16 12:09:49,924 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 334 transitions, 804 flow [2022-11-16 12:09:49,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 311.75) internal successors, (1247), 4 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:49,925 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:49,925 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:49,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 12:09:49,925 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 12:09:49,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:49,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1505600958, now seen corresponding path program 1 times [2022-11-16 12:09:49,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:49,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874138599] [2022-11-16 12:09:49,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:49,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:50,043 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:09:50,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:50,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874138599] [2022-11-16 12:09:50,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874138599] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:50,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907335055] [2022-11-16 12:09:50,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:50,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:50,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:50,045 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:50,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 12:09:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:50,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:09:50,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:50,234 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:09:50,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:50,335 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:09:50,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907335055] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:50,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:09:50,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 12:09:50,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444125060] [2022-11-16 12:09:50,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:50,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:09:50,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:50,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:09:50,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:09:50,341 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-16 12:09:50,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 334 transitions, 804 flow. Second operand has 18 states, 18 states have (on average 311.1111111111111) internal successors, (5600), 18 states have internal predecessors, (5600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:50,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:50,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-16 12:09:50,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:50,770 INFO L130 PetriNetUnfolder]: 14/616 cut-off events. [2022-11-16 12:09:50,771 INFO L131 PetriNetUnfolder]: For 120/134 co-relation queries the response was YES. [2022-11-16 12:09:50,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832 conditions, 616 events. 14/616 cut-off events. For 120/134 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2502 event pairs, 1 based on Foata normal form. 4/559 useless extension candidates. Maximal degree in co-relation 626. Up to 20 conditions per place. [2022-11-16 12:09:50,780 INFO L137 encePairwiseOnDemand]: 375/381 looper letters, 38 selfloop transitions, 21 changer transitions 0/369 dead transitions. [2022-11-16 12:09:50,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 369 transitions, 1076 flow [2022-11-16 12:09:50,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:09:50,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:09:50,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6531 transitions. [2022-11-16 12:09:50,794 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8162729658792651 [2022-11-16 12:09:50,794 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6531 transitions. [2022-11-16 12:09:50,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6531 transitions. [2022-11-16 12:09:50,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:50,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6531 transitions. [2022-11-16 12:09:50,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 311.0) internal successors, (6531), 21 states have internal predecessors, (6531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:50,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 381.0) internal successors, (8382), 22 states have internal predecessors, (8382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:50,824 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 381.0) internal successors, (8382), 22 states have internal predecessors, (8382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:50,824 INFO L175 Difference]: Start difference. First operand has 348 places, 334 transitions, 804 flow. Second operand 21 states and 6531 transitions. [2022-11-16 12:09:50,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 369 transitions, 1076 flow [2022-11-16 12:09:50,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 369 transitions, 1064 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:09:50,834 INFO L231 Difference]: Finished difference. Result has 370 places, 347 transitions, 948 flow [2022-11-16 12:09:50,834 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=948, PETRI_PLACES=370, PETRI_TRANSITIONS=347} [2022-11-16 12:09:50,835 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 41 predicate places. [2022-11-16 12:09:50,835 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 347 transitions, 948 flow [2022-11-16 12:09:50,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 311.1111111111111) internal successors, (5600), 18 states have internal predecessors, (5600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:50,837 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:50,837 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:50,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:51,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-16 12:09:51,047 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 12:09:51,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:51,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1320400258, now seen corresponding path program 2 times [2022-11-16 12:09:51,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:51,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842707213] [2022-11-16 12:09:51,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:51,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:51,383 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:09:51,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:51,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842707213] [2022-11-16 12:09:51,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842707213] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:51,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986354881] [2022-11-16 12:09:51,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:09:51,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:51,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:51,386 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:51,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 12:09:51,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:09:51,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:09:51,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:09:51,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:51,641 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:09:51,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:51,859 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:09:51,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986354881] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:51,859 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:09:51,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-16 12:09:51,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712905414] [2022-11-16 12:09:51,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:51,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:09:51,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:51,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:09:51,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:09:51,866 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-16 12:09:51,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 347 transitions, 948 flow. Second operand has 23 states, 23 states have (on average 311.3478260869565) internal successors, (7161), 23 states have internal predecessors, (7161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:51,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:51,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-16 12:09:51,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:52,381 INFO L130 PetriNetUnfolder]: 14/637 cut-off events. [2022-11-16 12:09:52,381 INFO L131 PetriNetUnfolder]: For 280/294 co-relation queries the response was YES. [2022-11-16 12:09:52,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 954 conditions, 637 events. 14/637 cut-off events. For 280/294 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2502 event pairs, 1 based on Foata normal form. 3/579 useless extension candidates. Maximal degree in co-relation 696. Up to 20 conditions per place. [2022-11-16 12:09:52,417 INFO L137 encePairwiseOnDemand]: 375/381 looper letters, 50 selfloop transitions, 30 changer transitions 0/390 dead transitions. [2022-11-16 12:09:52,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 390 transitions, 1318 flow [2022-11-16 12:09:52,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 12:09:52,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 12:09:52,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 9323 transitions. [2022-11-16 12:09:52,438 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.815660542432196 [2022-11-16 12:09:52,438 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 9323 transitions. [2022-11-16 12:09:52,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 9323 transitions. [2022-11-16 12:09:52,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:52,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 9323 transitions. [2022-11-16 12:09:52,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 310.76666666666665) internal successors, (9323), 30 states have internal predecessors, (9323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:52,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 381.0) internal successors, (11811), 31 states have internal predecessors, (11811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:52,486 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 381.0) internal successors, (11811), 31 states have internal predecessors, (11811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:52,486 INFO L175 Difference]: Start difference. First operand has 370 places, 347 transitions, 948 flow. Second operand 30 states and 9323 transitions. [2022-11-16 12:09:52,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 390 transitions, 1318 flow [2022-11-16 12:09:52,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 390 transitions, 1238 flow, removed 32 selfloop flow, removed 8 redundant places. [2022-11-16 12:09:52,498 INFO L231 Difference]: Finished difference. Result has 395 places, 357 transitions, 1046 flow [2022-11-16 12:09:52,498 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1046, PETRI_PLACES=395, PETRI_TRANSITIONS=357} [2022-11-16 12:09:52,499 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 66 predicate places. [2022-11-16 12:09:52,499 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 357 transitions, 1046 flow [2022-11-16 12:09:52,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 311.3478260869565) internal successors, (7161), 23 states have internal predecessors, (7161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:52,501 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:52,502 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:52,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:52,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-16 12:09:52,707 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 12:09:52,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:52,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1166110477, now seen corresponding path program 3 times [2022-11-16 12:09:52,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:52,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181494825] [2022-11-16 12:09:52,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:52,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:52,838 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:09:52,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:52,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181494825] [2022-11-16 12:09:52,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181494825] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:52,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122512092] [2022-11-16 12:09:52,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:09:52,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:52,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:52,840 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:52,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 12:09:52,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 12:09:52,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:09:52,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:09:52,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:53,035 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:09:53,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:09:53,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122512092] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:53,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:09:53,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 12:09:53,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741099853] [2022-11-16 12:09:53,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:53,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:09:53,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:53,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:09:53,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:09:53,038 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-16 12:09:53,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 357 transitions, 1046 flow. Second operand has 5 states, 5 states have (on average 311.2) internal successors, (1556), 5 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:53,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:53,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-16 12:09:53,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:53,231 INFO L130 PetriNetUnfolder]: 14/635 cut-off events. [2022-11-16 12:09:53,231 INFO L131 PetriNetUnfolder]: For 287/434 co-relation queries the response was YES. [2022-11-16 12:09:53,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 909 conditions, 635 events. 14/635 cut-off events. For 287/434 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2516 event pairs, 1 based on Foata normal form. 5/579 useless extension candidates. Maximal degree in co-relation 644. Up to 30 conditions per place. [2022-11-16 12:09:53,242 INFO L137 encePairwiseOnDemand]: 377/381 looper letters, 15 selfloop transitions, 5 changer transitions 0/356 dead transitions. [2022-11-16 12:09:53,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 356 transitions, 1082 flow [2022-11-16 12:09:53,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:09:53,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:09:53,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1249 transitions. [2022-11-16 12:09:53,244 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8195538057742782 [2022-11-16 12:09:53,245 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1249 transitions. [2022-11-16 12:09:53,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1249 transitions. [2022-11-16 12:09:53,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:53,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1249 transitions. [2022-11-16 12:09:53,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 312.25) internal successors, (1249), 4 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:53,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 381.0) internal successors, (1905), 5 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:53,250 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 381.0) internal successors, (1905), 5 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:53,250 INFO L175 Difference]: Start difference. First operand has 395 places, 357 transitions, 1046 flow. Second operand 4 states and 1249 transitions. [2022-11-16 12:09:53,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 356 transitions, 1082 flow [2022-11-16 12:09:53,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 356 transitions, 1036 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-16 12:09:53,259 INFO L231 Difference]: Finished difference. Result has 379 places, 356 transitions, 1006 flow [2022-11-16 12:09:53,260 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1006, PETRI_PLACES=379, PETRI_TRANSITIONS=356} [2022-11-16 12:09:53,260 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 50 predicate places. [2022-11-16 12:09:53,260 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 356 transitions, 1006 flow [2022-11-16 12:09:53,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 311.2) internal successors, (1556), 5 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:53,261 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:53,261 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:53,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:53,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-16 12:09:53,472 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 12:09:53,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:53,472 INFO L85 PathProgramCache]: Analyzing trace with hash -144955637, now seen corresponding path program 1 times [2022-11-16 12:09:53,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:53,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650829738] [2022-11-16 12:09:53,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:53,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:53,569 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:09:53,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:53,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650829738] [2022-11-16 12:09:53,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650829738] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:53,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888905726] [2022-11-16 12:09:53,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:53,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:53,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:53,571 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:53,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 12:09:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:53,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:09:53,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:53,766 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:09:53,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:53,806 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:09:53,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888905726] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:53,806 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:09:53,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 12:09:53,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847637004] [2022-11-16 12:09:53,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:53,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:09:53,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:53,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:09:53,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:09:53,811 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 381 [2022-11-16 12:09:53,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 356 transitions, 1006 flow. Second operand has 10 states, 10 states have (on average 310.9) internal successors, (3109), 10 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:53,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:53,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 381 [2022-11-16 12:09:53,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:09:54,064 INFO L130 PetriNetUnfolder]: 10/531 cut-off events. [2022-11-16 12:09:54,064 INFO L131 PetriNetUnfolder]: For 254/271 co-relation queries the response was YES. [2022-11-16 12:09:54,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 786 conditions, 531 events. 10/531 cut-off events. For 254/271 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1494 event pairs, 5 based on Foata normal form. 3/485 useless extension candidates. Maximal degree in co-relation 542. Up to 17 conditions per place. [2022-11-16 12:09:54,072 INFO L137 encePairwiseOnDemand]: 375/381 looper letters, 22 selfloop transitions, 9 changer transitions 0/367 dead transitions. [2022-11-16 12:09:54,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 367 transitions, 1106 flow [2022-11-16 12:09:54,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:09:54,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:09:54,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2805 transitions. [2022-11-16 12:09:54,076 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8180227471566054 [2022-11-16 12:09:54,076 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2805 transitions. [2022-11-16 12:09:54,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2805 transitions. [2022-11-16 12:09:54,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:09:54,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2805 transitions. [2022-11-16 12:09:54,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 311.6666666666667) internal successors, (2805), 9 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:54,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 381.0) internal successors, (3810), 10 states have internal predecessors, (3810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:54,090 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 381.0) internal successors, (3810), 10 states have internal predecessors, (3810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:54,090 INFO L175 Difference]: Start difference. First operand has 379 places, 356 transitions, 1006 flow. Second operand 9 states and 2805 transitions. [2022-11-16 12:09:54,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 367 transitions, 1106 flow [2022-11-16 12:09:54,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 367 transitions, 1092 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:09:54,100 INFO L231 Difference]: Finished difference. Result has 388 places, 360 transitions, 1052 flow [2022-11-16 12:09:54,100 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1052, PETRI_PLACES=388, PETRI_TRANSITIONS=360} [2022-11-16 12:09:54,105 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 59 predicate places. [2022-11-16 12:09:54,106 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 360 transitions, 1052 flow [2022-11-16 12:09:54,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 310.9) internal successors, (3109), 10 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:54,107 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:54,107 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:54,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:54,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc3b6b2-38bb-44c6-9d48-1081b16b3987/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:54,312 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 12:09:54,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:54,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1277518588, now seen corresponding path program 1 times [2022-11-16 12:09:54,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:54,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391276228] [2022-11-16 12:09:54,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:54,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:54,684 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:09:54,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:54,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391276228] [2022-11-16 12:09:54,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391276228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:54,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:54,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:09:54,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200719869] [2022-11-16 12:09:54,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:54,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:09:54,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:54,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:09:54,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:09:54,689 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 381 [2022-11-16 12:09:54,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 360 transitions, 1052 flow. Second operand has 10 states, 10 states have (on average 267.5) internal successors, (2675), 10 states have internal predecessors, (2675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:54,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:54,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 381 [2022-11-16 12:09:54,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:10:25,011 INFO L130 PetriNetUnfolder]: 42271/124013 cut-off events. [2022-11-16 12:10:25,011 INFO L131 PetriNetUnfolder]: For 3789/3789 co-relation queries the response was YES. [2022-11-16 12:10:26,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185595 conditions, 124013 events. 42271/124013 cut-off events. For 3789/3789 co-relation queries the response was YES. Maximal size of possible extension queue 3808. Compared 1825550 event pairs, 9759 based on Foata normal form. 0/115056 useless extension candidates. Maximal degree in co-relation 185324. Up to 31935 conditions per place. [2022-11-16 12:10:27,191 INFO L137 encePairwiseOnDemand]: 365/381 looper letters, 288 selfloop transitions, 38 changer transitions 0/625 dead transitions. [2022-11-16 12:10:27,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 625 transitions, 2340 flow [2022-11-16 12:10:27,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:10:27,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 12:10:27,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4574 transitions. [2022-11-16 12:10:27,199 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7503280839895013 [2022-11-16 12:10:27,199 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4574 transitions. [2022-11-16 12:10:27,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4574 transitions. [2022-11-16 12:10:27,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:10:27,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4574 transitions. [2022-11-16 12:10:27,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 285.875) internal successors, (4574), 16 states have internal predecessors, (4574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:27,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 381.0) internal successors, (6477), 17 states have internal predecessors, (6477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:27,216 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 381.0) internal successors, (6477), 17 states have internal predecessors, (6477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:27,216 INFO L175 Difference]: Start difference. First operand has 388 places, 360 transitions, 1052 flow. Second operand 16 states and 4574 transitions. [2022-11-16 12:10:27,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 625 transitions, 2340 flow [2022-11-16 12:10:27,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 625 transitions, 2324 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-16 12:10:27,235 INFO L231 Difference]: Finished difference. Result has 409 places, 397 transitions, 1317 flow [2022-11-16 12:10:27,236 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1317, PETRI_PLACES=409, PETRI_TRANSITIONS=397} [2022-11-16 12:10:27,239 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 80 predicate places. [2022-11-16 12:10:27,239 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 397 transitions, 1317 flow [2022-11-16 12:10:27,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 267.5) internal successors, (2675), 10 states have internal predecessors, (2675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:27,240 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:10:27,240 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:10:27,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-16 12:10:27,241 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 12:10:27,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:27,241 INFO L85 PathProgramCache]: Analyzing trace with hash 2087681273, now seen corresponding path program 1 times [2022-11-16 12:10:27,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:27,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590801810] [2022-11-16 12:10:27,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:27,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:27,504 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-16 12:10:27,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:27,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590801810] [2022-11-16 12:10:27,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590801810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:27,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:27,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:10:27,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706278792] [2022-11-16 12:10:27,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:27,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:10:27,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:27,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:10:27,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:10:27,509 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 381 [2022-11-16 12:10:27,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 397 transitions, 1317 flow. Second operand has 6 states, 6 states have (on average 272.0) internal successors, (1632), 6 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:10:27,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:10:27,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 381 [2022-11-16 12:10:27,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand