./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 53e3b4cf7a6885129025777f14c3b33a959debd694827832fbe127376cb0a5f9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:03:05,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:03:05,797 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:03:05,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:03:05,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:03:05,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:03:05,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:03:05,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:03:05,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:03:05,834 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:03:05,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:03:05,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:03:05,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:03:05,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:03:05,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:03:05,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:03:05,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:03:05,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:03:05,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:03:05,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:03:05,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:03:05,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:03:05,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:03:05,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:03:05,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:03:05,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:03:05,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:03:05,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:03:05,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:03:05,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:03:05,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:03:05,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:03:05,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:03:05,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:03:05,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:03:05,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:03:05,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:03:05,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:03:05,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:03:05,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:03:05,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:03:05,898 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:03:05,951 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:03:05,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:03:05,952 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:03:05,953 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:03:05,954 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:03:05,954 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:03:05,955 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:03:05,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:03:05,956 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:03:05,956 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:03:05,957 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:03:05,958 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:03:05,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:03:05,958 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:03:05,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:03:05,959 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:03:05,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:03:05,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:03:05,960 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:03:05,960 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:03:05,960 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:03:05,961 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:03:05,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:03:05,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:03:05,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:03:05,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:03:05,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:03:05,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:03:05,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:03:05,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:03:05,964 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:03:05,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:03:05,965 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:03:05,965 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:03:05,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:03:05,966 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_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53e3b4cf7a6885129025777f14c3b33a959debd694827832fbe127376cb0a5f9 [2022-11-20 11:03:06,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:03:06,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:03:06,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:03:06,323 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:03:06,323 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:03:06,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2022-11-20 11:03:09,528 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:03:09,949 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:03:09,950 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2022-11-20 11:03:09,965 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/data/e1b7111ac/2be33aa1115e461db2a4e59c58f1d5ef/FLAG44c96036e [2022-11-20 11:03:09,987 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/data/e1b7111ac/2be33aa1115e461db2a4e59c58f1d5ef [2022-11-20 11:03:09,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:03:09,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:03:09,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:03:09,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:03:09,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:03:10,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:03:09" (1/1) ... [2022-11-20 11:03:10,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@649fc181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:10, skipping insertion in model container [2022-11-20 11:03:10,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:03:09" (1/1) ... [2022-11-20 11:03:10,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:03:10,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:03:10,607 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i[41323,41336] [2022-11-20 11:03:10,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:03:10,688 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:03:10,740 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i[41323,41336] [2022-11-20 11:03:10,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:03:10,830 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:03:10,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:10 WrapperNode [2022-11-20 11:03:10,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:03:10,833 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:03:10,833 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:03:10,833 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:03:10,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:10" (1/1) ... [2022-11-20 11:03:10,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:10" (1/1) ... [2022-11-20 11:03:10,939 INFO L138 Inliner]: procedures = 270, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 205 [2022-11-20 11:03:10,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:03:10,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:03:10,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:03:10,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:03:10,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:10" (1/1) ... [2022-11-20 11:03:10,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:10" (1/1) ... [2022-11-20 11:03:10,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:10" (1/1) ... [2022-11-20 11:03:10,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:10" (1/1) ... [2022-11-20 11:03:10,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:10" (1/1) ... [2022-11-20 11:03:10,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:10" (1/1) ... [2022-11-20 11:03:10,987 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:10" (1/1) ... [2022-11-20 11:03:10,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:10" (1/1) ... [2022-11-20 11:03:10,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:03:10,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:03:10,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:03:10,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:03:10,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:10" (1/1) ... [2022-11-20 11:03:11,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:03:11,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:03:11,034 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:03:11,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:03:11,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:03:11,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:03:11,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:03:11,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:03:11,086 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 11:03:11,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:03:11,086 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 11:03:11,087 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 11:03:11,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:03:11,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:03:11,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:03:11,089 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:03:11,286 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:03:11,289 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:03:11,885 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:03:11,899 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:03:11,915 INFO L300 CfgBuilder]: Removed 23 assume(true) statements. [2022-11-20 11:03:11,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:03:11 BoogieIcfgContainer [2022-11-20 11:03:11,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:03:11,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:03:11,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:03:11,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:03:11,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:03:09" (1/3) ... [2022-11-20 11:03:11,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fb2fbc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:03:11, skipping insertion in model container [2022-11-20 11:03:11,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:10" (2/3) ... [2022-11-20 11:03:11,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fb2fbc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:03:11, skipping insertion in model container [2022-11-20 11:03:11,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:03:11" (3/3) ... [2022-11-20 11:03:11,936 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_76-tricky_address3_racefree.i [2022-11-20 11:03:11,952 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:03:11,967 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:03:11,967 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-20 11:03:11,967 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:03:12,125 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-20 11:03:12,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 230 transitions, 468 flow [2022-11-20 11:03:12,279 INFO L130 PetriNetUnfolder]: 45/309 cut-off events. [2022-11-20 11:03:12,279 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-20 11:03:12,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 309 events. 45/309 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 997 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 172. Up to 8 conditions per place. [2022-11-20 11:03:12,288 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 230 transitions, 468 flow [2022-11-20 11:03:12,296 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 200 places, 227 transitions, 462 flow [2022-11-20 11:03:12,306 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:03:12,312 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;@286b33cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:03:12,313 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-20 11:03:12,318 INFO L130 PetriNetUnfolder]: 1/31 cut-off events. [2022-11-20 11:03:12,319 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:03:12,319 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:12,320 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] [2022-11-20 11:03:12,320 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)] === [2022-11-20 11:03:12,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:12,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1996514626, now seen corresponding path program 1 times [2022-11-20 11:03:12,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:12,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718066711] [2022-11-20 11:03:12,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:12,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:12,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:12,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:12,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718066711] [2022-11-20 11:03:12,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718066711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:12,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:12,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:03:12,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627479317] [2022-11-20 11:03:12,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:12,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:03:12,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:12,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:03:12,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:03:12,764 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 230 [2022-11-20 11:03:12,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 227 transitions, 462 flow. Second operand has 4 states, 4 states have (on average 188.5) internal successors, (754), 4 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:12,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:12,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 230 [2022-11-20 11:03:12,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:12,907 INFO L130 PetriNetUnfolder]: 4/270 cut-off events. [2022-11-20 11:03:12,908 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-20 11:03:12,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 270 events. 4/270 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 771 event pairs, 0 based on Foata normal form. 39/277 useless extension candidates. Maximal degree in co-relation 147. Up to 15 conditions per place. [2022-11-20 11:03:12,914 INFO L137 encePairwiseOnDemand]: 196/230 looper letters, 17 selfloop transitions, 4 changer transitions 1/205 dead transitions. [2022-11-20 11:03:12,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 205 transitions, 460 flow [2022-11-20 11:03:12,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:03:12,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:03:12,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 987 transitions. [2022-11-20 11:03:12,964 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8582608695652174 [2022-11-20 11:03:12,965 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 987 transitions. [2022-11-20 11:03:12,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 987 transitions. [2022-11-20 11:03:12,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:12,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 987 transitions. [2022-11-20 11:03:12,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 197.4) internal successors, (987), 5 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:13,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:13,001 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:13,004 INFO L175 Difference]: Start difference. First operand has 200 places, 227 transitions, 462 flow. Second operand 5 states and 987 transitions. [2022-11-20 11:03:13,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 205 transitions, 460 flow [2022-11-20 11:03:13,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 205 transitions, 460 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:03:13,055 INFO L231 Difference]: Finished difference. Result has 205 places, 200 transitions, 434 flow [2022-11-20 11:03:13,058 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=434, PETRI_PLACES=205, PETRI_TRANSITIONS=200} [2022-11-20 11:03:13,078 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 5 predicate places. [2022-11-20 11:03:13,079 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 200 transitions, 434 flow [2022-11-20 11:03:13,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 188.5) internal successors, (754), 4 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:13,081 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:13,081 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] [2022-11-20 11:03:13,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:03:13,082 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)] === [2022-11-20 11:03:13,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:13,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1286251496, now seen corresponding path program 1 times [2022-11-20 11:03:13,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:13,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497869786] [2022-11-20 11:03:13,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:13,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:13,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:03:13,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:13,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497869786] [2022-11-20 11:03:13,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497869786] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:13,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:13,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:03:13,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249368152] [2022-11-20 11:03:13,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:13,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:03:13,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:13,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:03:13,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:03:13,270 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 230 [2022-11-20 11:03:13,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 200 transitions, 434 flow. Second operand has 4 states, 4 states have (on average 190.25) internal successors, (761), 4 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:13,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:13,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 230 [2022-11-20 11:03:13,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:13,362 INFO L130 PetriNetUnfolder]: 4/268 cut-off events. [2022-11-20 11:03:13,363 INFO L131 PetriNetUnfolder]: For 9/10 co-relation queries the response was YES. [2022-11-20 11:03:13,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 268 events. 4/268 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 774 event pairs, 0 based on Foata normal form. 1/241 useless extension candidates. Maximal degree in co-relation 258. Up to 7 conditions per place. [2022-11-20 11:03:13,367 INFO L137 encePairwiseOnDemand]: 224/230 looper letters, 9 selfloop transitions, 8 changer transitions 0/200 dead transitions. [2022-11-20 11:03:13,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 200 transitions, 466 flow [2022-11-20 11:03:13,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:03:13,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:03:13,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 950 transitions. [2022-11-20 11:03:13,371 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8260869565217391 [2022-11-20 11:03:13,372 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 950 transitions. [2022-11-20 11:03:13,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 950 transitions. [2022-11-20 11:03:13,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:13,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 950 transitions. [2022-11-20 11:03:13,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:13,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:13,381 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:13,382 INFO L175 Difference]: Start difference. First operand has 205 places, 200 transitions, 434 flow. Second operand 5 states and 950 transitions. [2022-11-20 11:03:13,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 200 transitions, 466 flow [2022-11-20 11:03:13,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 200 transitions, 464 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:03:13,389 INFO L231 Difference]: Finished difference. Result has 207 places, 200 transitions, 452 flow [2022-11-20 11:03:13,389 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=452, PETRI_PLACES=207, PETRI_TRANSITIONS=200} [2022-11-20 11:03:13,390 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 7 predicate places. [2022-11-20 11:03:13,391 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 200 transitions, 452 flow [2022-11-20 11:03:13,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 190.25) internal successors, (761), 4 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:13,392 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:13,392 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] [2022-11-20 11:03:13,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:03:13,393 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)] === [2022-11-20 11:03:13,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:13,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1219091299, now seen corresponding path program 1 times [2022-11-20 11:03:13,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:13,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226459294] [2022-11-20 11:03:13,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:13,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:13,655 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:13,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:13,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226459294] [2022-11-20 11:03:13,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226459294] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:03:13,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700862450] [2022-11-20 11:03:13,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:13,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:13,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:03:13,663 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:03:13,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:03:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:13,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:03:13,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:13,884 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:13,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:03:13,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700862450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:13,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:03:13,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-20 11:03:13,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106319968] [2022-11-20 11:03:13,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:13,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:03:13,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:13,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:03:13,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:03:13,896 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 230 [2022-11-20 11:03:13,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 200 transitions, 452 flow. Second operand has 5 states, 5 states have (on average 189.8) internal successors, (949), 5 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:13,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:13,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 230 [2022-11-20 11:03:13,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:13,996 INFO L130 PetriNetUnfolder]: 4/267 cut-off events. [2022-11-20 11:03:13,996 INFO L131 PetriNetUnfolder]: For 16/17 co-relation queries the response was YES. [2022-11-20 11:03:14,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 267 events. 4/267 cut-off events. For 16/17 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 764 event pairs, 0 based on Foata normal form. 1/240 useless extension candidates. Maximal degree in co-relation 256. Up to 10 conditions per place. [2022-11-20 11:03:14,003 INFO L137 encePairwiseOnDemand]: 226/230 looper letters, 11 selfloop transitions, 5 changer transitions 0/199 dead transitions. [2022-11-20 11:03:14,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 199 transitions, 480 flow [2022-11-20 11:03:14,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:03:14,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:03:14,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 761 transitions. [2022-11-20 11:03:14,007 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8271739130434783 [2022-11-20 11:03:14,007 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 761 transitions. [2022-11-20 11:03:14,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 761 transitions. [2022-11-20 11:03:14,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:14,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 761 transitions. [2022-11-20 11:03:14,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 190.25) internal successors, (761), 4 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:14,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:14,015 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:14,015 INFO L175 Difference]: Start difference. First operand has 207 places, 200 transitions, 452 flow. Second operand 4 states and 761 transitions. [2022-11-20 11:03:14,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 199 transitions, 480 flow [2022-11-20 11:03:14,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 199 transitions, 468 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:03:14,021 INFO L231 Difference]: Finished difference. Result has 206 places, 199 transitions, 446 flow [2022-11-20 11:03:14,022 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=446, PETRI_PLACES=206, PETRI_TRANSITIONS=199} [2022-11-20 11:03:14,051 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 6 predicate places. [2022-11-20 11:03:14,052 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 199 transitions, 446 flow [2022-11-20 11:03:14,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 189.8) internal successors, (949), 5 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:14,053 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:14,053 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] [2022-11-20 11:03:14,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 11:03:14,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:14,254 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)] === [2022-11-20 11:03:14,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:14,255 INFO L85 PathProgramCache]: Analyzing trace with hash 588501593, now seen corresponding path program 1 times [2022-11-20 11:03:14,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:14,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797884880] [2022-11-20 11:03:14,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:14,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:14,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:14,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:14,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797884880] [2022-11-20 11:03:14,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797884880] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:03:14,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828577541] [2022-11-20 11:03:14,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:14,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:14,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:03:14,460 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:03:14,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:03:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:14,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:03:14,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:14,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:14,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:14,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:14,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828577541] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:03:14,729 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:03:14,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 11:03:14,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805205591] [2022-11-20 11:03:14,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:14,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:03:14,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:14,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:03:14,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:03:14,742 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 230 [2022-11-20 11:03:14,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 199 transitions, 446 flow. Second operand has 10 states, 10 states have (on average 189.7) internal successors, (1897), 10 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:14,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:14,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 230 [2022-11-20 11:03:14,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:14,924 INFO L130 PetriNetUnfolder]: 4/275 cut-off events. [2022-11-20 11:03:14,924 INFO L131 PetriNetUnfolder]: For 22/23 co-relation queries the response was YES. [2022-11-20 11:03:14,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 275 events. 4/275 cut-off events. For 22/23 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 754 event pairs, 0 based on Foata normal form. 2/249 useless extension candidates. Maximal degree in co-relation 246. Up to 7 conditions per place. [2022-11-20 11:03:14,927 INFO L137 encePairwiseOnDemand]: 224/230 looper letters, 18 selfloop transitions, 9 changer transitions 0/210 dead transitions. [2022-11-20 11:03:14,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 210 transitions, 538 flow [2022-11-20 11:03:14,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:03:14,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:03:14,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1712 transitions. [2022-11-20 11:03:14,933 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8270531400966183 [2022-11-20 11:03:14,933 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1712 transitions. [2022-11-20 11:03:14,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1712 transitions. [2022-11-20 11:03:14,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:14,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1712 transitions. [2022-11-20 11:03:14,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 190.22222222222223) internal successors, (1712), 9 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:14,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 230.0) internal successors, (2300), 10 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:14,948 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 230.0) internal successors, (2300), 10 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:14,949 INFO L175 Difference]: Start difference. First operand has 206 places, 199 transitions, 446 flow. Second operand 9 states and 1712 transitions. [2022-11-20 11:03:14,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 210 transitions, 538 flow [2022-11-20 11:03:14,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 210 transitions, 524 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:03:14,956 INFO L231 Difference]: Finished difference. Result has 215 places, 203 transitions, 492 flow [2022-11-20 11:03:14,957 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=492, PETRI_PLACES=215, PETRI_TRANSITIONS=203} [2022-11-20 11:03:14,958 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 15 predicate places. [2022-11-20 11:03:14,959 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 203 transitions, 492 flow [2022-11-20 11:03:14,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 189.7) internal successors, (1897), 10 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:14,960 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:14,961 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] [2022-11-20 11:03:14,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:15,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:15,167 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)] === [2022-11-20 11:03:15,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:15,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1233047321, now seen corresponding path program 2 times [2022-11-20 11:03:15,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:15,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809570887] [2022-11-20 11:03:15,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:15,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:15,345 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 11:03:15,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:15,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809570887] [2022-11-20 11:03:15,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809570887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:15,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:15,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:03:15,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738292484] [2022-11-20 11:03:15,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:15,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:03:15,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:15,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:03:15,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:03:15,350 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 230 [2022-11-20 11:03:15,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 203 transitions, 492 flow. Second operand has 4 states, 4 states have (on average 188.75) internal successors, (755), 4 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:15,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:15,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 230 [2022-11-20 11:03:15,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:15,430 INFO L130 PetriNetUnfolder]: 3/212 cut-off events. [2022-11-20 11:03:15,431 INFO L131 PetriNetUnfolder]: For 40/57 co-relation queries the response was YES. [2022-11-20 11:03:15,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 212 events. 3/212 cut-off events. For 40/57 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 389 event pairs, 0 based on Foata normal form. 3/197 useless extension candidates. Maximal degree in co-relation 195. Up to 7 conditions per place. [2022-11-20 11:03:15,434 INFO L137 encePairwiseOnDemand]: 223/230 looper letters, 10 selfloop transitions, 4 changer transitions 0/203 dead transitions. [2022-11-20 11:03:15,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 203 transitions, 520 flow [2022-11-20 11:03:15,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:03:15,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:03:15,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 952 transitions. [2022-11-20 11:03:15,438 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8278260869565217 [2022-11-20 11:03:15,438 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 952 transitions. [2022-11-20 11:03:15,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 952 transitions. [2022-11-20 11:03:15,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:15,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 952 transitions. [2022-11-20 11:03:15,442 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) [2022-11-20 11:03:15,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:15,474 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:15,474 INFO L175 Difference]: Start difference. First operand has 215 places, 203 transitions, 492 flow. Second operand 5 states and 952 transitions. [2022-11-20 11:03:15,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 203 transitions, 520 flow [2022-11-20 11:03:15,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 203 transitions, 504 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-20 11:03:15,486 INFO L231 Difference]: Finished difference. Result has 214 places, 201 transitions, 484 flow [2022-11-20 11:03:15,486 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=484, PETRI_PLACES=214, PETRI_TRANSITIONS=201} [2022-11-20 11:03:15,488 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 14 predicate places. [2022-11-20 11:03:15,488 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 201 transitions, 484 flow [2022-11-20 11:03:15,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 188.75) internal successors, (755), 4 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:15,489 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:15,489 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] [2022-11-20 11:03:15,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:03:15,490 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:03:15,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:15,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1516829175, now seen corresponding path program 1 times [2022-11-20 11:03:15,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:15,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64865083] [2022-11-20 11:03:15,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:15,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:15,731 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:03:15,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:15,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64865083] [2022-11-20 11:03:15,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64865083] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:03:15,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674395307] [2022-11-20 11:03:15,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:15,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:15,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:03:15,734 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:03:15,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:03:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:15,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:03:15,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:15,919 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:03:15,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:16,033 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:03:16,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674395307] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:03:16,034 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:03:16,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-20 11:03:16,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882896279] [2022-11-20 11:03:16,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:16,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:03:16,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:16,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:03:16,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:03:16,041 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 230 [2022-11-20 11:03:16,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 201 transitions, 484 flow. Second operand has 18 states, 18 states have (on average 190.05555555555554) internal successors, (3421), 18 states have internal predecessors, (3421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:16,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:16,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 230 [2022-11-20 11:03:16,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:16,353 INFO L130 PetriNetUnfolder]: 3/240 cut-off events. [2022-11-20 11:03:16,354 INFO L131 PetriNetUnfolder]: For 59/60 co-relation queries the response was YES. [2022-11-20 11:03:16,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 240 events. 3/240 cut-off events. For 59/60 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 387 event pairs, 0 based on Foata normal form. 4/227 useless extension candidates. Maximal degree in co-relation 216. Up to 9 conditions per place. [2022-11-20 11:03:16,357 INFO L137 encePairwiseOnDemand]: 224/230 looper letters, 34 selfloop transitions, 21 changer transitions 0/236 dead transitions. [2022-11-20 11:03:16,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 236 transitions, 748 flow [2022-11-20 11:03:16,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:03:16,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:03:16,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3986 transitions. [2022-11-20 11:03:16,366 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8252587991718426 [2022-11-20 11:03:16,367 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3986 transitions. [2022-11-20 11:03:16,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3986 transitions. [2022-11-20 11:03:16,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:16,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3986 transitions. [2022-11-20 11:03:16,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 189.8095238095238) internal successors, (3986), 21 states have internal predecessors, (3986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:16,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 230.0) internal successors, (5060), 22 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:16,391 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 230.0) internal successors, (5060), 22 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:16,391 INFO L175 Difference]: Start difference. First operand has 214 places, 201 transitions, 484 flow. Second operand 21 states and 3986 transitions. [2022-11-20 11:03:16,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 236 transitions, 748 flow [2022-11-20 11:03:16,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 236 transitions, 740 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:03:16,398 INFO L231 Difference]: Finished difference. Result has 235 places, 214 transitions, 632 flow [2022-11-20 11:03:16,399 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=632, PETRI_PLACES=235, PETRI_TRANSITIONS=214} [2022-11-20 11:03:16,399 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 35 predicate places. [2022-11-20 11:03:16,400 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 214 transitions, 632 flow [2022-11-20 11:03:16,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 190.05555555555554) internal successors, (3421), 18 states have internal predecessors, (3421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:16,402 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:16,402 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] [2022-11-20 11:03:16,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:16,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:16,608 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:03:16,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:16,609 INFO L85 PathProgramCache]: Analyzing trace with hash -469004407, now seen corresponding path program 2 times [2022-11-20 11:03:16,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:16,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91650125] [2022-11-20 11:03:16,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:16,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:17,028 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:03:17,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:17,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91650125] [2022-11-20 11:03:17,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91650125] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:03:17,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779814173] [2022-11-20 11:03:17,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:03:17,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:17,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:03:17,031 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:03:17,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:03:17,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:03:17,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:03:17,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:03:17,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:17,330 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:03:17,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:17,594 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:03:17,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779814173] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:03:17,595 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:03:17,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-20 11:03:17,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898548184] [2022-11-20 11:03:17,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:17,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:03:17,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:17,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:03:17,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:03:17,603 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 230 [2022-11-20 11:03:17,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 214 transitions, 632 flow. Second operand has 23 states, 23 states have (on average 190.30434782608697) internal successors, (4377), 23 states have internal predecessors, (4377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:17,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:17,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 230 [2022-11-20 11:03:17,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:18,144 INFO L130 PetriNetUnfolder]: 3/261 cut-off events. [2022-11-20 11:03:18,145 INFO L131 PetriNetUnfolder]: For 226/227 co-relation queries the response was YES. [2022-11-20 11:03:18,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 261 events. 3/261 cut-off events. For 226/227 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 388 event pairs, 0 based on Foata normal form. 3/247 useless extension candidates. Maximal degree in co-relation 342. Up to 12 conditions per place. [2022-11-20 11:03:18,148 INFO L137 encePairwiseOnDemand]: 224/230 looper letters, 46 selfloop transitions, 30 changer transitions 0/257 dead transitions. [2022-11-20 11:03:18,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 257 transitions, 994 flow [2022-11-20 11:03:18,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 11:03:18,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 11:03:18,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5689 transitions. [2022-11-20 11:03:18,162 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8244927536231884 [2022-11-20 11:03:18,163 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 5689 transitions. [2022-11-20 11:03:18,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 5689 transitions. [2022-11-20 11:03:18,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:18,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 5689 transitions. [2022-11-20 11:03:18,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 189.63333333333333) internal successors, (5689), 30 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) [2022-11-20 11:03:18,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 230.0) internal successors, (7130), 31 states have internal predecessors, (7130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:18,200 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 230.0) internal successors, (7130), 31 states have internal predecessors, (7130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:18,200 INFO L175 Difference]: Start difference. First operand has 235 places, 214 transitions, 632 flow. Second operand 30 states and 5689 transitions. [2022-11-20 11:03:18,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 257 transitions, 994 flow [2022-11-20 11:03:18,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 257 transitions, 914 flow, removed 32 selfloop flow, removed 8 redundant places. [2022-11-20 11:03:18,209 INFO L231 Difference]: Finished difference. Result has 260 places, 224 transitions, 730 flow [2022-11-20 11:03:18,210 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=730, PETRI_PLACES=260, PETRI_TRANSITIONS=224} [2022-11-20 11:03:18,211 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 60 predicate places. [2022-11-20 11:03:18,211 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 224 transitions, 730 flow [2022-11-20 11:03:18,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 190.30434782608697) internal successors, (4377), 23 states have internal predecessors, (4377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:18,214 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:18,214 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] [2022-11-20 11:03:18,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:18,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:18,421 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-20 11:03:18,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:18,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1366570867, now seen corresponding path program 3 times [2022-11-20 11:03:18,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:18,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729182488] [2022-11-20 11:03:18,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:18,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:03:18,461 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:03:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:03:18,530 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:03:18,531 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:03:18,533 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2022-11-20 11:03:18,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2022-11-20 11:03:18,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2022-11-20 11:03:18,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2022-11-20 11:03:18,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2022-11-20 11:03:18,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2022-11-20 11:03:18,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2022-11-20 11:03:18,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2022-11-20 11:03:18,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2022-11-20 11:03:18,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2022-11-20 11:03:18,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2022-11-20 11:03:18,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2022-11-20 11:03:18,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2022-11-20 11:03:18,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2022-11-20 11:03:18,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2022-11-20 11:03:18,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2022-11-20 11:03:18,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2022-11-20 11:03:18,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2022-11-20 11:03:18,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2022-11-20 11:03:18,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2022-11-20 11:03:18,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2022-11-20 11:03:18,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2022-11-20 11:03:18,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2022-11-20 11:03:18,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:03:18,549 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2022-11-20 11:03:18,553 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 11:03:18,554 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 11:03:18,597 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 11:03:18,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 276 places, 316 transitions, 650 flow [2022-11-20 11:03:18,710 INFO L130 PetriNetUnfolder]: 75/511 cut-off events. [2022-11-20 11:03:18,711 INFO L131 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2022-11-20 11:03:18,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 511 events. 75/511 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2100 event pairs, 0 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 311. Up to 12 conditions per place. [2022-11-20 11:03:18,719 INFO L82 GeneralOperation]: Start removeDead. Operand has 276 places, 316 transitions, 650 flow [2022-11-20 11:03:18,730 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 276 places, 316 transitions, 650 flow [2022-11-20 11:03:18,737 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:03:18,740 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;@286b33cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:03:18,740 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-11-20 11:03:18,743 INFO L130 PetriNetUnfolder]: 1/31 cut-off events. [2022-11-20 11:03:18,743 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:03:18,744 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:18,744 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] [2022-11-20 11:03:18,746 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-20 11:03:18,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:18,747 INFO L85 PathProgramCache]: Analyzing trace with hash 474221178, now seen corresponding path program 1 times [2022-11-20 11:03:18,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:18,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685724002] [2022-11-20 11:03:18,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:18,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:18,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:18,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:18,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685724002] [2022-11-20 11:03:18,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685724002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:18,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:18,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:03:18,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200094470] [2022-11-20 11:03:18,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:18,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:03:18,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:18,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:03:18,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:03:18,796 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 316 [2022-11-20 11:03:18,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 316 transitions, 650 flow. Second operand has 4 states, 4 states have (on average 259.5) internal successors, (1038), 4 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:18,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:18,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 316 [2022-11-20 11:03:18,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:18,954 INFO L130 PetriNetUnfolder]: 9/447 cut-off events. [2022-11-20 11:03:18,954 INFO L131 PetriNetUnfolder]: For 18/22 co-relation queries the response was YES. [2022-11-20 11:03:18,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487 conditions, 447 events. 9/447 cut-off events. For 18/22 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1746 event pairs, 0 based on Foata normal form. 90/480 useless extension candidates. Maximal degree in co-relation 296. Up to 19 conditions per place. [2022-11-20 11:03:18,963 INFO L137 encePairwiseOnDemand]: 270/316 looper letters, 19 selfloop transitions, 4 changer transitions 1/281 dead transitions. [2022-11-20 11:03:18,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 281 transitions, 626 flow [2022-11-20 11:03:18,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:03:18,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:03:18,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1356 transitions. [2022-11-20 11:03:18,968 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8582278481012658 [2022-11-20 11:03:18,968 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1356 transitions. [2022-11-20 11:03:18,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1356 transitions. [2022-11-20 11:03:18,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:18,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1356 transitions. [2022-11-20 11:03:18,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 271.2) internal successors, (1356), 5 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:18,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 316.0) internal successors, (1896), 6 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:18,977 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 316.0) internal successors, (1896), 6 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:18,978 INFO L175 Difference]: Start difference. First operand has 276 places, 316 transitions, 650 flow. Second operand 5 states and 1356 transitions. [2022-11-20 11:03:18,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 281 transitions, 626 flow [2022-11-20 11:03:18,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 281 transitions, 626 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:03:18,984 INFO L231 Difference]: Finished difference. Result has 280 places, 276 transitions, 596 flow [2022-11-20 11:03:18,985 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=596, PETRI_PLACES=280, PETRI_TRANSITIONS=276} [2022-11-20 11:03:18,986 INFO L288 CegarLoopForPetriNet]: 276 programPoint places, 4 predicate places. [2022-11-20 11:03:18,986 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 276 transitions, 596 flow [2022-11-20 11:03:18,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 259.5) internal successors, (1038), 4 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:18,987 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:18,987 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] [2022-11-20 11:03:18,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:03:18,987 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-20 11:03:18,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:18,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1440857240, now seen corresponding path program 1 times [2022-11-20 11:03:18,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:18,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967738112] [2022-11-20 11:03:18,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:18,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:19,030 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:03:19,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:19,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967738112] [2022-11-20 11:03:19,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967738112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:19,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:19,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:03:19,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448612262] [2022-11-20 11:03:19,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:19,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:03:19,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:19,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:03:19,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:03:19,034 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 316 [2022-11-20 11:03:19,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 276 transitions, 596 flow. Second operand has 4 states, 4 states have (on average 261.25) internal successors, (1045), 4 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:19,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:19,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 316 [2022-11-20 11:03:19,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:19,162 INFO L130 PetriNetUnfolder]: 9/445 cut-off events. [2022-11-20 11:03:19,162 INFO L131 PetriNetUnfolder]: For 21/25 co-relation queries the response was YES. [2022-11-20 11:03:19,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 445 events. 9/445 cut-off events. For 21/25 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1745 event pairs, 0 based on Foata normal form. 1/393 useless extension candidates. Maximal degree in co-relation 446. Up to 11 conditions per place. [2022-11-20 11:03:19,170 INFO L137 encePairwiseOnDemand]: 310/316 looper letters, 11 selfloop transitions, 8 changer transitions 0/276 dead transitions. [2022-11-20 11:03:19,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 276 transitions, 632 flow [2022-11-20 11:03:19,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:03:19,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:03:19,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1307 transitions. [2022-11-20 11:03:19,174 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8272151898734177 [2022-11-20 11:03:19,174 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1307 transitions. [2022-11-20 11:03:19,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1307 transitions. [2022-11-20 11:03:19,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:19,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1307 transitions. [2022-11-20 11:03:19,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 261.4) internal successors, (1307), 5 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:19,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 316.0) internal successors, (1896), 6 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:19,182 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 316.0) internal successors, (1896), 6 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:19,182 INFO L175 Difference]: Start difference. First operand has 280 places, 276 transitions, 596 flow. Second operand 5 states and 1307 transitions. [2022-11-20 11:03:19,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 276 transitions, 632 flow [2022-11-20 11:03:19,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 276 transitions, 630 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:03:19,188 INFO L231 Difference]: Finished difference. Result has 282 places, 276 transitions, 614 flow [2022-11-20 11:03:19,189 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=614, PETRI_PLACES=282, PETRI_TRANSITIONS=276} [2022-11-20 11:03:19,190 INFO L288 CegarLoopForPetriNet]: 276 programPoint places, 6 predicate places. [2022-11-20 11:03:19,190 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 276 transitions, 614 flow [2022-11-20 11:03:19,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 261.25) internal successors, (1045), 4 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:19,191 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:19,191 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] [2022-11-20 11:03:19,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:03:19,191 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-20 11:03:19,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:19,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1716900577, now seen corresponding path program 1 times [2022-11-20 11:03:19,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:19,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785942503] [2022-11-20 11:03:19,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:19,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:19,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:19,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:19,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785942503] [2022-11-20 11:03:19,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785942503] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:03:19,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398317057] [2022-11-20 11:03:19,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:19,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:19,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:03:19,272 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:03:19,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:03:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:19,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:03:19,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:19,426 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:19,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:03:19,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398317057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:19,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:03:19,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-20 11:03:19,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850402667] [2022-11-20 11:03:19,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:19,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:03:19,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:19,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:03:19,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:03:19,431 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 316 [2022-11-20 11:03:19,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 276 transitions, 614 flow. Second operand has 5 states, 5 states have (on average 260.8) internal successors, (1304), 5 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:19,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:19,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 316 [2022-11-20 11:03:19,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:19,596 INFO L130 PetriNetUnfolder]: 9/444 cut-off events. [2022-11-20 11:03:19,596 INFO L131 PetriNetUnfolder]: For 28/32 co-relation queries the response was YES. [2022-11-20 11:03:19,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 507 conditions, 444 events. 9/444 cut-off events. For 28/32 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1733 event pairs, 0 based on Foata normal form. 1/392 useless extension candidates. Maximal degree in co-relation 444. Up to 14 conditions per place. [2022-11-20 11:03:19,604 INFO L137 encePairwiseOnDemand]: 312/316 looper letters, 13 selfloop transitions, 5 changer transitions 0/275 dead transitions. [2022-11-20 11:03:19,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 275 transitions, 646 flow [2022-11-20 11:03:19,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:03:19,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:03:19,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1047 transitions. [2022-11-20 11:03:19,608 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8283227848101266 [2022-11-20 11:03:19,608 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1047 transitions. [2022-11-20 11:03:19,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1047 transitions. [2022-11-20 11:03:19,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:19,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1047 transitions. [2022-11-20 11:03:19,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 261.75) internal successors, (1047), 4 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:19,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 316.0) internal successors, (1580), 5 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:19,615 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 316.0) internal successors, (1580), 5 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:19,615 INFO L175 Difference]: Start difference. First operand has 282 places, 276 transitions, 614 flow. Second operand 4 states and 1047 transitions. [2022-11-20 11:03:19,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 275 transitions, 646 flow [2022-11-20 11:03:19,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 275 transitions, 634 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:03:19,622 INFO L231 Difference]: Finished difference. Result has 281 places, 275 transitions, 608 flow [2022-11-20 11:03:19,623 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=608, PETRI_PLACES=281, PETRI_TRANSITIONS=275} [2022-11-20 11:03:19,624 INFO L288 CegarLoopForPetriNet]: 276 programPoint places, 5 predicate places. [2022-11-20 11:03:19,624 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 275 transitions, 608 flow [2022-11-20 11:03:19,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 260.8) internal successors, (1304), 5 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:19,625 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:19,626 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] [2022-11-20 11:03:19,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:19,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:19,832 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-20 11:03:19,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:19,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1826251159, now seen corresponding path program 1 times [2022-11-20 11:03:19,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:19,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010618430] [2022-11-20 11:03:19,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:19,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:19,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:19,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:19,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:19,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010618430] [2022-11-20 11:03:19,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010618430] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:03:19,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343327384] [2022-11-20 11:03:19,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:19,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:19,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:03:19,912 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:03:19,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:03:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:20,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:03:20,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:20,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:20,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:20,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343327384] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:03:20,105 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:03:20,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 11:03:20,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607247630] [2022-11-20 11:03:20,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:20,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:03:20,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:20,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:03:20,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:03:20,113 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 316 [2022-11-20 11:03:20,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 275 transitions, 608 flow. Second operand has 10 states, 10 states have (on average 260.7) internal successors, (2607), 10 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:20,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:20,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 316 [2022-11-20 11:03:20,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:20,320 INFO L130 PetriNetUnfolder]: 9/452 cut-off events. [2022-11-20 11:03:20,320 INFO L131 PetriNetUnfolder]: For 34/38 co-relation queries the response was YES. [2022-11-20 11:03:20,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 531 conditions, 452 events. 9/452 cut-off events. For 34/38 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1726 event pairs, 0 based on Foata normal form. 2/401 useless extension candidates. Maximal degree in co-relation 434. Up to 11 conditions per place. [2022-11-20 11:03:20,330 INFO L137 encePairwiseOnDemand]: 310/316 looper letters, 20 selfloop transitions, 9 changer transitions 0/286 dead transitions. [2022-11-20 11:03:20,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 286 transitions, 704 flow [2022-11-20 11:03:20,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:03:20,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:03:20,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2353 transitions. [2022-11-20 11:03:20,337 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8273558368495078 [2022-11-20 11:03:20,337 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2353 transitions. [2022-11-20 11:03:20,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2353 transitions. [2022-11-20 11:03:20,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:20,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2353 transitions. [2022-11-20 11:03:20,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 261.44444444444446) internal successors, (2353), 9 states have internal predecessors, (2353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:20,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 316.0) internal successors, (3160), 10 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:20,352 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 316.0) internal successors, (3160), 10 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:20,352 INFO L175 Difference]: Start difference. First operand has 281 places, 275 transitions, 608 flow. Second operand 9 states and 2353 transitions. [2022-11-20 11:03:20,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 286 transitions, 704 flow [2022-11-20 11:03:20,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 286 transitions, 690 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:03:20,360 INFO L231 Difference]: Finished difference. Result has 290 places, 279 transitions, 654 flow [2022-11-20 11:03:20,360 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=654, PETRI_PLACES=290, PETRI_TRANSITIONS=279} [2022-11-20 11:03:20,361 INFO L288 CegarLoopForPetriNet]: 276 programPoint places, 14 predicate places. [2022-11-20 11:03:20,361 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 279 transitions, 654 flow [2022-11-20 11:03:20,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 260.7) internal successors, (2607), 10 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:20,363 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:20,363 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] [2022-11-20 11:03:20,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:20,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 11:03:20,570 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-20 11:03:20,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:20,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1971743063, now seen corresponding path program 2 times [2022-11-20 11:03:20,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:20,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335066939] [2022-11-20 11:03:20,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:20,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:20,675 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 11:03:20,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:20,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335066939] [2022-11-20 11:03:20,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335066939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:20,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:20,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:03:20,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021783382] [2022-11-20 11:03:20,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:20,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:03:20,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:20,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:03:20,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:03:20,680 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 316 [2022-11-20 11:03:20,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 279 transitions, 654 flow. Second operand has 4 states, 4 states have (on average 259.75) internal successors, (1039), 4 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:20,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:20,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 316 [2022-11-20 11:03:20,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:20,835 INFO L130 PetriNetUnfolder]: 7/398 cut-off events. [2022-11-20 11:03:20,836 INFO L131 PetriNetUnfolder]: For 42/74 co-relation queries the response was YES. [2022-11-20 11:03:20,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 398 events. 7/398 cut-off events. For 42/74 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1371 event pairs, 0 based on Foata normal form. 3/357 useless extension candidates. Maximal degree in co-relation 402. Up to 21 conditions per place. [2022-11-20 11:03:20,844 INFO L137 encePairwiseOnDemand]: 309/316 looper letters, 19 selfloop transitions, 4 changer transitions 0/286 dead transitions. [2022-11-20 11:03:20,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 286 transitions, 714 flow [2022-11-20 11:03:20,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:03:20,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:03:20,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1316 transitions. [2022-11-20 11:03:20,847 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8329113924050633 [2022-11-20 11:03:20,848 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1316 transitions. [2022-11-20 11:03:20,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1316 transitions. [2022-11-20 11:03:20,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:20,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1316 transitions. [2022-11-20 11:03:20,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 263.2) internal successors, (1316), 5 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:20,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 316.0) internal successors, (1896), 6 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:20,855 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 316.0) internal successors, (1896), 6 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:20,855 INFO L175 Difference]: Start difference. First operand has 290 places, 279 transitions, 654 flow. Second operand 5 states and 1316 transitions. [2022-11-20 11:03:20,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 286 transitions, 714 flow [2022-11-20 11:03:20,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 286 transitions, 698 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-20 11:03:20,861 INFO L231 Difference]: Finished difference. Result has 293 places, 282 transitions, 670 flow [2022-11-20 11:03:20,862 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=670, PETRI_PLACES=293, PETRI_TRANSITIONS=282} [2022-11-20 11:03:20,863 INFO L288 CegarLoopForPetriNet]: 276 programPoint places, 17 predicate places. [2022-11-20 11:03:20,863 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 282 transitions, 670 flow [2022-11-20 11:03:20,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 259.75) internal successors, (1039), 4 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:20,864 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:20,864 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:20,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:03:20,865 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-20 11:03:20,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:20,865 INFO L85 PathProgramCache]: Analyzing trace with hash 857574527, now seen corresponding path program 1 times [2022-11-20 11:03:20,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:20,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628558832] [2022-11-20 11:03:20,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:20,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:20,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:21,041 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:21,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:21,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628558832] [2022-11-20 11:03:21,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628558832] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:03:21,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171075611] [2022-11-20 11:03:21,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:21,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:21,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:03:21,048 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:03:21,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:03:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:21,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:03:21,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:21,244 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:21,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:21,377 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:21,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171075611] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:03:21,378 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:03:21,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-20 11:03:21,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621063407] [2022-11-20 11:03:21,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:21,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:03:21,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:21,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:03:21,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:03:21,389 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 316 [2022-11-20 11:03:21,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 282 transitions, 670 flow. Second operand has 18 states, 18 states have (on average 261.05555555555554) internal successors, (4699), 18 states have internal predecessors, (4699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:21,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:21,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 316 [2022-11-20 11:03:21,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:21,786 INFO L130 PetriNetUnfolder]: 7/426 cut-off events. [2022-11-20 11:03:21,786 INFO L131 PetriNetUnfolder]: For 73/77 co-relation queries the response was YES. [2022-11-20 11:03:21,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 426 events. 7/426 cut-off events. For 73/77 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1359 event pairs, 0 based on Foata normal form. 4/390 useless extension candidates. Maximal degree in co-relation 393. Up to 11 conditions per place. [2022-11-20 11:03:21,794 INFO L137 encePairwiseOnDemand]: 310/316 looper letters, 36 selfloop transitions, 21 changer transitions 0/317 dead transitions. [2022-11-20 11:03:21,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 317 transitions, 938 flow [2022-11-20 11:03:21,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:03:21,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:03:21,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5479 transitions. [2022-11-20 11:03:21,802 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8256479807112719 [2022-11-20 11:03:21,803 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5479 transitions. [2022-11-20 11:03:21,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5479 transitions. [2022-11-20 11:03:21,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:21,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5479 transitions. [2022-11-20 11:03:21,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 260.9047619047619) internal successors, (5479), 21 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) [2022-11-20 11:03:21,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 316.0) internal successors, (6952), 22 states have internal predecessors, (6952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:21,826 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 316.0) internal successors, (6952), 22 states have internal predecessors, (6952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:21,827 INFO L175 Difference]: Start difference. First operand has 293 places, 282 transitions, 670 flow. Second operand 21 states and 5479 transitions. [2022-11-20 11:03:21,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 317 transitions, 938 flow [2022-11-20 11:03:21,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 317 transitions, 936 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:03:21,834 INFO L231 Difference]: Finished difference. Result has 317 places, 295 transitions, 824 flow [2022-11-20 11:03:21,835 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=824, PETRI_PLACES=317, PETRI_TRANSITIONS=295} [2022-11-20 11:03:21,836 INFO L288 CegarLoopForPetriNet]: 276 programPoint places, 41 predicate places. [2022-11-20 11:03:21,836 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 295 transitions, 824 flow [2022-11-20 11:03:21,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 261.05555555555554) internal successors, (4699), 18 states have internal predecessors, (4699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:21,838 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:21,838 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:21,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:22,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 11:03:22,044 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-20 11:03:22,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:22,045 INFO L85 PathProgramCache]: Analyzing trace with hash 405183487, now seen corresponding path program 2 times [2022-11-20 11:03:22,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:22,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431103527] [2022-11-20 11:03:22,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:22,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:22,413 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:22,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:22,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431103527] [2022-11-20 11:03:22,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431103527] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:03:22,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357824589] [2022-11-20 11:03:22,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:03:22,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:22,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:03:22,416 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:03:22,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:03:22,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:03:22,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:03:22,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:03:22,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:22,734 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-11-20 11:03:22,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:03:22,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357824589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:22,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:03:22,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2022-11-20 11:03:22,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018544488] [2022-11-20 11:03:22,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:22,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:03:22,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:22,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:03:22,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:03:22,739 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 316 [2022-11-20 11:03:22,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 295 transitions, 824 flow. Second operand has 6 states, 6 states have (on average 257.5) internal successors, (1545), 6 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:22,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:22,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 316 [2022-11-20 11:03:22,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:23,209 INFO L130 PetriNetUnfolder]: 39/881 cut-off events. [2022-11-20 11:03:23,209 INFO L131 PetriNetUnfolder]: For 228/251 co-relation queries the response was YES. [2022-11-20 11:03:23,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1175 conditions, 881 events. 39/881 cut-off events. For 228/251 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5322 event pairs, 6 based on Foata normal form. 4/785 useless extension candidates. Maximal degree in co-relation 986. Up to 20 conditions per place. [2022-11-20 11:03:23,226 INFO L137 encePairwiseOnDemand]: 309/316 looper letters, 21 selfloop transitions, 6 changer transitions 0/304 dead transitions. [2022-11-20 11:03:23,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 304 transitions, 936 flow [2022-11-20 11:03:23,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:03:23,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:03:23,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1820 transitions. [2022-11-20 11:03:23,230 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8227848101265823 [2022-11-20 11:03:23,230 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1820 transitions. [2022-11-20 11:03:23,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1820 transitions. [2022-11-20 11:03:23,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:23,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1820 transitions. [2022-11-20 11:03:23,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:23,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 316.0) internal successors, (2528), 8 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:23,240 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 316.0) internal successors, (2528), 8 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:23,240 INFO L175 Difference]: Start difference. First operand has 317 places, 295 transitions, 824 flow. Second operand 7 states and 1820 transitions. [2022-11-20 11:03:23,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 304 transitions, 936 flow [2022-11-20 11:03:23,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 304 transitions, 880 flow, removed 20 selfloop flow, removed 8 redundant places. [2022-11-20 11:03:23,249 INFO L231 Difference]: Finished difference. Result has 314 places, 294 transitions, 778 flow [2022-11-20 11:03:23,250 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=778, PETRI_PLACES=314, PETRI_TRANSITIONS=294} [2022-11-20 11:03:23,251 INFO L288 CegarLoopForPetriNet]: 276 programPoint places, 38 predicate places. [2022-11-20 11:03:23,251 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 294 transitions, 778 flow [2022-11-20 11:03:23,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 257.5) internal successors, (1545), 6 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:23,252 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:23,252 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 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] [2022-11-20 11:03:23,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:23,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 11:03:23,459 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-20 11:03:23,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:23,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1116926412, now seen corresponding path program 1 times [2022-11-20 11:03:23,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:23,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661147060] [2022-11-20 11:03:23,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:23,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:23,543 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-20 11:03:23,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:23,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661147060] [2022-11-20 11:03:23,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661147060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:23,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:23,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:03:23,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394158279] [2022-11-20 11:03:23,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:23,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:03:23,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:23,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:03:23,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:03:23,548 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 316 [2022-11-20 11:03:23,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 294 transitions, 778 flow. Second operand has 4 states, 4 states have (on average 261.75) internal successors, (1047), 4 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:23,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:23,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 316 [2022-11-20 11:03:23,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:23,738 INFO L130 PetriNetUnfolder]: 7/424 cut-off events. [2022-11-20 11:03:23,738 INFO L131 PetriNetUnfolder]: For 86/116 co-relation queries the response was YES. [2022-11-20 11:03:23,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 424 events. 7/424 cut-off events. For 86/116 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1349 event pairs, 0 based on Foata normal form. 7/393 useless extension candidates. Maximal degree in co-relation 448. Up to 10 conditions per place. [2022-11-20 11:03:23,745 INFO L137 encePairwiseOnDemand]: 310/316 looper letters, 11 selfloop transitions, 8 changer transitions 0/294 dead transitions. [2022-11-20 11:03:23,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 294 transitions, 814 flow [2022-11-20 11:03:23,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:03:23,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:03:23,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1307 transitions. [2022-11-20 11:03:23,752 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8272151898734177 [2022-11-20 11:03:23,752 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1307 transitions. [2022-11-20 11:03:23,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1307 transitions. [2022-11-20 11:03:23,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:23,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1307 transitions. [2022-11-20 11:03:23,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 261.4) internal successors, (1307), 5 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:23,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 316.0) internal successors, (1896), 6 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:23,760 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 316.0) internal successors, (1896), 6 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:23,760 INFO L175 Difference]: Start difference. First operand has 314 places, 294 transitions, 778 flow. Second operand 5 states and 1307 transitions. [2022-11-20 11:03:23,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 294 transitions, 814 flow [2022-11-20 11:03:23,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 294 transitions, 802 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 11:03:23,769 INFO L231 Difference]: Finished difference. Result has 312 places, 294 transitions, 786 flow [2022-11-20 11:03:23,770 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=786, PETRI_PLACES=312, PETRI_TRANSITIONS=294} [2022-11-20 11:03:23,771 INFO L288 CegarLoopForPetriNet]: 276 programPoint places, 36 predicate places. [2022-11-20 11:03:23,771 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 294 transitions, 786 flow [2022-11-20 11:03:23,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 261.75) internal successors, (1047), 4 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:23,772 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:23,772 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:23,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 11:03:23,773 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-20 11:03:23,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:23,773 INFO L85 PathProgramCache]: Analyzing trace with hash -324212843, now seen corresponding path program 1 times [2022-11-20 11:03:23,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:23,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263072197] [2022-11-20 11:03:23,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:23,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:24,174 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:24,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:24,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263072197] [2022-11-20 11:03:24,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263072197] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:03:24,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619715979] [2022-11-20 11:03:24,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:24,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:24,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:03:24,177 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:03:24,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:03:24,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:24,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:03:24,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:24,433 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:24,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:24,723 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:24,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619715979] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:03:24,723 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:03:24,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-20 11:03:24,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914735077] [2022-11-20 11:03:24,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:24,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:03:24,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:24,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:03:24,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:03:24,731 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 316 [2022-11-20 11:03:24,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 294 transitions, 786 flow. Second operand has 23 states, 23 states have (on average 261.30434782608694) internal successors, (6010), 23 states have internal predecessors, (6010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:24,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:24,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 316 [2022-11-20 11:03:24,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:25,370 INFO L130 PetriNetUnfolder]: 7/445 cut-off events. [2022-11-20 11:03:25,371 INFO L131 PetriNetUnfolder]: For 184/188 co-relation queries the response was YES. [2022-11-20 11:03:25,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 445 events. 7/445 cut-off events. For 184/188 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1346 event pairs, 0 based on Foata normal form. 3/409 useless extension candidates. Maximal degree in co-relation 483. Up to 12 conditions per place. [2022-11-20 11:03:25,387 INFO L137 encePairwiseOnDemand]: 310/316 looper letters, 48 selfloop transitions, 30 changer transitions 0/337 dead transitions. [2022-11-20 11:03:25,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 337 transitions, 1128 flow [2022-11-20 11:03:25,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 11:03:25,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 11:03:25,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7821 transitions. [2022-11-20 11:03:25,403 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.825 [2022-11-20 11:03:25,403 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7821 transitions. [2022-11-20 11:03:25,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7821 transitions. [2022-11-20 11:03:25,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:25,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7821 transitions. [2022-11-20 11:03:25,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 260.7) internal successors, (7821), 30 states have internal predecessors, (7821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:25,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 316.0) internal successors, (9796), 31 states have internal predecessors, (9796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:25,443 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 316.0) internal successors, (9796), 31 states have internal predecessors, (9796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:25,443 INFO L175 Difference]: Start difference. First operand has 312 places, 294 transitions, 786 flow. Second operand 30 states and 7821 transitions. [2022-11-20 11:03:25,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 337 transitions, 1128 flow [2022-11-20 11:03:25,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 337 transitions, 1116 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:03:25,453 INFO L231 Difference]: Finished difference. Result has 342 places, 304 transitions, 928 flow [2022-11-20 11:03:25,454 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=928, PETRI_PLACES=342, PETRI_TRANSITIONS=304} [2022-11-20 11:03:25,454 INFO L288 CegarLoopForPetriNet]: 276 programPoint places, 66 predicate places. [2022-11-20 11:03:25,455 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 304 transitions, 928 flow [2022-11-20 11:03:25,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 261.30434782608694) internal successors, (6010), 23 states have internal predecessors, (6010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:25,456 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:25,457 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] [2022-11-20 11:03:25,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:25,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 11:03:25,657 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-20 11:03:25,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:25,658 INFO L85 PathProgramCache]: Analyzing trace with hash 600991683, now seen corresponding path program 2 times [2022-11-20 11:03:25,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:25,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731248200] [2022-11-20 11:03:25,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:25,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:25,808 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:03:25,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:25,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731248200] [2022-11-20 11:03:25,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731248200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:25,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:25,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:03:25,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109320832] [2022-11-20 11:03:25,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:25,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:03:25,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:25,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:03:25,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:03:25,812 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 316 [2022-11-20 11:03:25,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 304 transitions, 928 flow. Second operand has 5 states, 5 states have (on average 259.8) internal successors, (1299), 5 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:25,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:25,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 316 [2022-11-20 11:03:25,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:26,187 INFO L130 PetriNetUnfolder]: 36/1085 cut-off events. [2022-11-20 11:03:26,188 INFO L131 PetriNetUnfolder]: For 283/295 co-relation queries the response was YES. [2022-11-20 11:03:26,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1422 conditions, 1085 events. 36/1085 cut-off events. For 283/295 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 6767 event pairs, 6 based on Foata normal form. 0/969 useless extension candidates. Maximal degree in co-relation 1159. Up to 24 conditions per place. [2022-11-20 11:03:26,204 INFO L137 encePairwiseOnDemand]: 310/316 looper letters, 17 selfloop transitions, 5 changer transitions 0/311 dead transitions. [2022-11-20 11:03:26,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 311 transitions, 1018 flow [2022-11-20 11:03:26,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:03:26,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:03:26,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1571 transitions. [2022-11-20 11:03:26,208 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8285864978902954 [2022-11-20 11:03:26,209 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1571 transitions. [2022-11-20 11:03:26,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1571 transitions. [2022-11-20 11:03:26,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:26,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1571 transitions. [2022-11-20 11:03:26,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 261.8333333333333) internal successors, (1571), 6 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:26,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 316.0) internal successors, (2212), 7 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:26,217 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 316.0) internal successors, (2212), 7 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:26,218 INFO L175 Difference]: Start difference. First operand has 342 places, 304 transitions, 928 flow. Second operand 6 states and 1571 transitions. [2022-11-20 11:03:26,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 311 transitions, 1018 flow [2022-11-20 11:03:26,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 311 transitions, 972 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-20 11:03:26,228 INFO L231 Difference]: Finished difference. Result has 328 places, 303 transitions, 890 flow [2022-11-20 11:03:26,229 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=890, PETRI_PLACES=328, PETRI_TRANSITIONS=303} [2022-11-20 11:03:26,229 INFO L288 CegarLoopForPetriNet]: 276 programPoint places, 52 predicate places. [2022-11-20 11:03:26,230 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 303 transitions, 890 flow [2022-11-20 11:03:26,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 259.8) internal successors, (1299), 5 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:26,231 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:26,231 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] [2022-11-20 11:03:26,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 11:03:26,231 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-20 11:03:26,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:26,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1118449530, now seen corresponding path program 1 times [2022-11-20 11:03:26,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:26,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802394166] [2022-11-20 11:03:26,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:26,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:26,380 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:03:26,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:26,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802394166] [2022-11-20 11:03:26,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802394166] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:03:26,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121516508] [2022-11-20 11:03:26,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:26,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:26,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:03:26,383 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:03:26,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 11:03:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:26,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:03:26,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:26,618 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:03:26,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:03:26,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121516508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:26,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:03:26,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:03:26,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720313258] [2022-11-20 11:03:26,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:26,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:03:26,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:26,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:03:26,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:03:26,623 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 316 [2022-11-20 11:03:26,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 303 transitions, 890 flow. Second operand has 6 states, 6 states have (on average 260.6666666666667) internal successors, (1564), 6 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:26,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:26,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 316 [2022-11-20 11:03:26,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:26,778 INFO L130 PetriNetUnfolder]: 7/443 cut-off events. [2022-11-20 11:03:26,779 INFO L131 PetriNetUnfolder]: For 199/227 co-relation queries the response was YES. [2022-11-20 11:03:26,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 443 events. 7/443 cut-off events. For 199/227 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1333 event pairs, 0 based on Foata normal form. 6/411 useless extension candidates. Maximal degree in co-relation 524. Up to 13 conditions per place. [2022-11-20 11:03:26,787 INFO L137 encePairwiseOnDemand]: 311/316 looper letters, 15 selfloop transitions, 6 changer transitions 0/305 dead transitions. [2022-11-20 11:03:26,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 305 transitions, 934 flow [2022-11-20 11:03:26,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:03:26,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:03:26,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1828 transitions. [2022-11-20 11:03:26,790 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8264014466546112 [2022-11-20 11:03:26,791 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1828 transitions. [2022-11-20 11:03:26,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1828 transitions. [2022-11-20 11:03:26,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:26,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1828 transitions. [2022-11-20 11:03:26,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 261.14285714285717) internal successors, (1828), 7 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:26,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 316.0) internal successors, (2528), 8 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:26,799 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 316.0) internal successors, (2528), 8 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:26,799 INFO L175 Difference]: Start difference. First operand has 328 places, 303 transitions, 890 flow. Second operand 7 states and 1828 transitions. [2022-11-20 11:03:26,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 305 transitions, 934 flow [2022-11-20 11:03:26,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 305 transitions, 924 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:03:26,808 INFO L231 Difference]: Finished difference. Result has 328 places, 302 transitions, 888 flow [2022-11-20 11:03:26,808 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=888, PETRI_PLACES=328, PETRI_TRANSITIONS=302} [2022-11-20 11:03:26,809 INFO L288 CegarLoopForPetriNet]: 276 programPoint places, 52 predicate places. [2022-11-20 11:03:26,809 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 302 transitions, 888 flow [2022-11-20 11:03:26,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 260.6666666666667) internal successors, (1564), 6 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:26,810 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:26,810 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] [2022-11-20 11:03:26,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:27,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:27,016 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-20 11:03:27,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:27,018 INFO L85 PathProgramCache]: Analyzing trace with hash -74701236, now seen corresponding path program 1 times [2022-11-20 11:03:27,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:27,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056403236] [2022-11-20 11:03:27,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:27,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:27,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:27,171 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:03:27,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:27,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056403236] [2022-11-20 11:03:27,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056403236] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:03:27,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758869622] [2022-11-20 11:03:27,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:27,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:27,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:03:27,173 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:03:27,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 11:03:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:27,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:03:27,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:27,353 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:03:27,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:27,399 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:03:27,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758869622] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:03:27,400 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:03:27,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 11:03:27,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512385979] [2022-11-20 11:03:27,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:27,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:03:27,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:27,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:03:27,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:03:27,405 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 316 [2022-11-20 11:03:27,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 302 transitions, 888 flow. Second operand has 10 states, 10 states have (on average 260.9) internal successors, (2609), 10 states have internal predecessors, (2609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:27,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:27,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 316 [2022-11-20 11:03:27,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:27,530 INFO L130 PetriNetUnfolder]: 3/275 cut-off events. [2022-11-20 11:03:27,530 INFO L131 PetriNetUnfolder]: For 199/199 co-relation queries the response was YES. [2022-11-20 11:03:27,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 275 events. 3/275 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 363 event pairs, 0 based on Foata normal form. 2/261 useless extension candidates. Maximal degree in co-relation 357. Up to 12 conditions per place. [2022-11-20 11:03:27,534 INFO L137 encePairwiseOnDemand]: 311/316 looper letters, 13 selfloop transitions, 7 changer transitions 0/236 dead transitions. [2022-11-20 11:03:27,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 236 transitions, 790 flow [2022-11-20 11:03:27,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:03:27,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:03:27,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2344 transitions. [2022-11-20 11:03:27,538 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8241912798874824 [2022-11-20 11:03:27,538 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2344 transitions. [2022-11-20 11:03:27,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2344 transitions. [2022-11-20 11:03:27,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:27,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2344 transitions. [2022-11-20 11:03:27,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 260.44444444444446) internal successors, (2344), 9 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:27,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 316.0) internal successors, (3160), 10 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:27,548 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 316.0) internal successors, (3160), 10 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:27,549 INFO L175 Difference]: Start difference. First operand has 328 places, 302 transitions, 888 flow. Second operand 9 states and 2344 transitions. [2022-11-20 11:03:27,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 236 transitions, 790 flow [2022-11-20 11:03:27,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 236 transitions, 773 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-11-20 11:03:27,557 INFO L231 Difference]: Finished difference. Result has 262 places, 231 transitions, 735 flow [2022-11-20 11:03:27,557 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=735, PETRI_PLACES=262, PETRI_TRANSITIONS=231} [2022-11-20 11:03:27,558 INFO L288 CegarLoopForPetriNet]: 276 programPoint places, -14 predicate places. [2022-11-20 11:03:27,558 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 231 transitions, 735 flow [2022-11-20 11:03:27,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 260.9) internal successors, (2609), 10 states have internal predecessors, (2609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:27,560 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:27,560 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] [2022-11-20 11:03:27,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:27,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:27,767 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-20 11:03:27,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:27,768 INFO L85 PathProgramCache]: Analyzing trace with hash -561146306, now seen corresponding path program 1 times [2022-11-20 11:03:27,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:27,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481527788] [2022-11-20 11:03:27,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:27,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:03:27,801 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:03:27,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:03:27,852 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:03:27,852 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:03:27,852 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2022-11-20 11:03:27,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2022-11-20 11:03:27,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2022-11-20 11:03:27,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2022-11-20 11:03:27,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2022-11-20 11:03:27,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2022-11-20 11:03:27,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2022-11-20 11:03:27,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2022-11-20 11:03:27,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2022-11-20 11:03:27,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2022-11-20 11:03:27,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2022-11-20 11:03:27,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2022-11-20 11:03:27,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2022-11-20 11:03:27,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2022-11-20 11:03:27,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2022-11-20 11:03:27,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2022-11-20 11:03:27,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2022-11-20 11:03:27,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2022-11-20 11:03:27,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2022-11-20 11:03:27,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2022-11-20 11:03:27,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2022-11-20 11:03:27,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2022-11-20 11:03:27,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2022-11-20 11:03:27,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2022-11-20 11:03:27,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2022-11-20 11:03:27,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2022-11-20 11:03:27,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2022-11-20 11:03:27,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2022-11-20 11:03:27,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2022-11-20 11:03:27,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 11:03:27,861 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:27,861 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 11:03:27,862 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-20 11:03:27,915 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 11:03:27,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 350 places, 402 transitions, 834 flow [2022-11-20 11:03:28,081 INFO L130 PetriNetUnfolder]: 110/754 cut-off events. [2022-11-20 11:03:28,082 INFO L131 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2022-11-20 11:03:28,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 782 conditions, 754 events. 110/754 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3468 event pairs, 1 based on Foata normal form. 0/584 useless extension candidates. Maximal degree in co-relation 519. Up to 16 conditions per place. [2022-11-20 11:03:28,099 INFO L82 GeneralOperation]: Start removeDead. Operand has 350 places, 402 transitions, 834 flow [2022-11-20 11:03:28,114 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 350 places, 402 transitions, 834 flow [2022-11-20 11:03:28,116 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:03:28,117 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;@286b33cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:03:28,117 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2022-11-20 11:03:28,120 INFO L130 PetriNetUnfolder]: 1/31 cut-off events. [2022-11-20 11:03:28,120 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:03:28,120 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:28,120 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] [2022-11-20 11:03:28,120 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-20 11:03:28,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:28,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1221261620, now seen corresponding path program 1 times [2022-11-20 11:03:28,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:28,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359248296] [2022-11-20 11:03:28,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:28,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:28,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:28,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:28,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359248296] [2022-11-20 11:03:28,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359248296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:28,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:28,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:03:28,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843513166] [2022-11-20 11:03:28,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:28,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:03:28,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:28,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:03:28,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:03:28,159 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 402 [2022-11-20 11:03:28,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 402 transitions, 834 flow. Second operand has 4 states, 4 states have (on average 330.5) internal successors, (1322), 4 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:28,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:28,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 402 [2022-11-20 11:03:28,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:28,371 INFO L130 PetriNetUnfolder]: 16/660 cut-off events. [2022-11-20 11:03:28,371 INFO L131 PetriNetUnfolder]: For 56/73 co-relation queries the response was YES. [2022-11-20 11:03:28,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 723 conditions, 660 events. 16/660 cut-off events. For 56/73 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3021 event pairs, 1 based on Foata normal form. 208/781 useless extension candidates. Maximal degree in co-relation 480. Up to 28 conditions per place. [2022-11-20 11:03:28,391 INFO L137 encePairwiseOnDemand]: 344/402 looper letters, 21 selfloop transitions, 4 changer transitions 1/354 dead transitions. [2022-11-20 11:03:28,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 354 transitions, 788 flow [2022-11-20 11:03:28,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:03:28,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:03:28,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1725 transitions. [2022-11-20 11:03:28,395 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8582089552238806 [2022-11-20 11:03:28,395 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1725 transitions. [2022-11-20 11:03:28,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1725 transitions. [2022-11-20 11:03:28,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:28,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1725 transitions. [2022-11-20 11:03:28,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:28,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:28,406 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:28,406 INFO L175 Difference]: Start difference. First operand has 350 places, 402 transitions, 834 flow. Second operand 5 states and 1725 transitions. [2022-11-20 11:03:28,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 354 transitions, 788 flow [2022-11-20 11:03:28,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 354 transitions, 788 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:03:28,413 INFO L231 Difference]: Finished difference. Result has 353 places, 349 transitions, 754 flow [2022-11-20 11:03:28,414 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=724, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=754, PETRI_PLACES=353, PETRI_TRANSITIONS=349} [2022-11-20 11:03:28,415 INFO L288 CegarLoopForPetriNet]: 350 programPoint places, 3 predicate places. [2022-11-20 11:03:28,415 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 349 transitions, 754 flow [2022-11-20 11:03:28,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 330.5) internal successors, (1322), 4 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:28,416 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:28,416 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] [2022-11-20 11:03:28,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 11:03:28,417 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-20 11:03:28,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:28,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1512236632, now seen corresponding path program 1 times [2022-11-20 11:03:28,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:28,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975503263] [2022-11-20 11:03:28,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:28,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:28,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:03:28,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:28,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975503263] [2022-11-20 11:03:28,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975503263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:28,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:28,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:03:28,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19957138] [2022-11-20 11:03:28,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:28,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:03:28,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:28,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:03:28,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:03:28,459 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 402 [2022-11-20 11:03:28,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 349 transitions, 754 flow. Second operand has 4 states, 4 states have (on average 332.25) internal successors, (1329), 4 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:28,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:28,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 402 [2022-11-20 11:03:28,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:28,667 INFO L130 PetriNetUnfolder]: 16/658 cut-off events. [2022-11-20 11:03:28,668 INFO L131 PetriNetUnfolder]: For 59/76 co-relation queries the response was YES. [2022-11-20 11:03:28,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 658 events. 16/658 cut-off events. For 59/76 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3029 event pairs, 1 based on Foata normal form. 1/576 useless extension candidates. Maximal degree in co-relation 681. Up to 20 conditions per place. [2022-11-20 11:03:28,687 INFO L137 encePairwiseOnDemand]: 396/402 looper letters, 13 selfloop transitions, 8 changer transitions 0/349 dead transitions. [2022-11-20 11:03:28,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 349 transitions, 794 flow [2022-11-20 11:03:28,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:03:28,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:03:28,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1664 transitions. [2022-11-20 11:03:28,691 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8278606965174129 [2022-11-20 11:03:28,691 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1664 transitions. [2022-11-20 11:03:28,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1664 transitions. [2022-11-20 11:03:28,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:28,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1664 transitions. [2022-11-20 11:03:28,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 332.8) internal successors, (1664), 5 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:28,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:28,699 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:28,699 INFO L175 Difference]: Start difference. First operand has 353 places, 349 transitions, 754 flow. Second operand 5 states and 1664 transitions. [2022-11-20 11:03:28,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 349 transitions, 794 flow [2022-11-20 11:03:28,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 349 transitions, 792 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:03:28,707 INFO L231 Difference]: Finished difference. Result has 355 places, 349 transitions, 772 flow [2022-11-20 11:03:28,707 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=772, PETRI_PLACES=355, PETRI_TRANSITIONS=349} [2022-11-20 11:03:28,708 INFO L288 CegarLoopForPetriNet]: 350 programPoint places, 5 predicate places. [2022-11-20 11:03:28,708 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 349 transitions, 772 flow [2022-11-20 11:03:28,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 332.25) internal successors, (1329), 4 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:28,709 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:28,709 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] [2022-11-20 11:03:28,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 11:03:28,710 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-20 11:03:28,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:28,710 INFO L85 PathProgramCache]: Analyzing trace with hash 365305969, now seen corresponding path program 1 times [2022-11-20 11:03:28,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:28,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104294947] [2022-11-20 11:03:28,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:28,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:28,768 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:28,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:28,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104294947] [2022-11-20 11:03:28,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104294947] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:03:28,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366146278] [2022-11-20 11:03:28,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:28,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:28,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:03:28,771 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:03:28,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 11:03:28,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:28,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:03:28,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:28,944 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:28,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:03:28,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366146278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:28,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:03:28,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-20 11:03:28,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628783480] [2022-11-20 11:03:28,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:28,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:03:28,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:28,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:03:28,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:03:28,951 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 402 [2022-11-20 11:03:28,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 349 transitions, 772 flow. Second operand has 5 states, 5 states have (on average 331.8) internal successors, (1659), 5 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:28,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:28,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 402 [2022-11-20 11:03:28,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:29,217 INFO L130 PetriNetUnfolder]: 16/657 cut-off events. [2022-11-20 11:03:29,218 INFO L131 PetriNetUnfolder]: For 66/83 co-relation queries the response was YES. [2022-11-20 11:03:29,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 657 events. 16/657 cut-off events. For 66/83 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3013 event pairs, 1 based on Foata normal form. 1/575 useless extension candidates. Maximal degree in co-relation 679. Up to 23 conditions per place. [2022-11-20 11:03:29,235 INFO L137 encePairwiseOnDemand]: 398/402 looper letters, 15 selfloop transitions, 5 changer transitions 0/348 dead transitions. [2022-11-20 11:03:29,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 348 transitions, 808 flow [2022-11-20 11:03:29,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:03:29,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:03:29,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1333 transitions. [2022-11-20 11:03:29,238 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8289800995024875 [2022-11-20 11:03:29,239 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1333 transitions. [2022-11-20 11:03:29,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1333 transitions. [2022-11-20 11:03:29,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:29,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1333 transitions. [2022-11-20 11:03:29,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 333.25) internal successors, (1333), 4 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:29,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:29,245 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:29,246 INFO L175 Difference]: Start difference. First operand has 355 places, 349 transitions, 772 flow. Second operand 4 states and 1333 transitions. [2022-11-20 11:03:29,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 348 transitions, 808 flow [2022-11-20 11:03:29,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 348 transitions, 796 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:03:29,253 INFO L231 Difference]: Finished difference. Result has 354 places, 348 transitions, 766 flow [2022-11-20 11:03:29,254 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=766, PETRI_PLACES=354, PETRI_TRANSITIONS=348} [2022-11-20 11:03:29,255 INFO L288 CegarLoopForPetriNet]: 350 programPoint places, 4 predicate places. [2022-11-20 11:03:29,255 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 348 transitions, 766 flow [2022-11-20 11:03:29,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 331.8) internal successors, (1659), 5 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:29,256 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:29,256 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] [2022-11-20 11:03:29,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:29,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-20 11:03:29,463 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-20 11:03:29,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:29,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1686255119, now seen corresponding path program 1 times [2022-11-20 11:03:29,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:29,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847102319] [2022-11-20 11:03:29,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:29,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:29,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:29,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:29,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847102319] [2022-11-20 11:03:29,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847102319] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:03:29,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135821156] [2022-11-20 11:03:29,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:29,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:29,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:03:29,520 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:03:29,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 11:03:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:29,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:03:29,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:29,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:29,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:29,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:29,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135821156] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:03:29,719 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:03:29,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 11:03:29,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497242703] [2022-11-20 11:03:29,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:29,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:03:29,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:29,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:03:29,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:03:29,724 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 402 [2022-11-20 11:03:29,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 348 transitions, 766 flow. Second operand has 10 states, 10 states have (on average 331.7) internal successors, (3317), 10 states have internal predecessors, (3317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:29,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:29,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 402 [2022-11-20 11:03:29,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:30,014 INFO L130 PetriNetUnfolder]: 16/665 cut-off events. [2022-11-20 11:03:30,015 INFO L131 PetriNetUnfolder]: For 72/89 co-relation queries the response was YES. [2022-11-20 11:03:30,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 665 events. 16/665 cut-off events. For 72/89 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3003 event pairs, 1 based on Foata normal form. 2/584 useless extension candidates. Maximal degree in co-relation 669. Up to 20 conditions per place. [2022-11-20 11:03:30,034 INFO L137 encePairwiseOnDemand]: 396/402 looper letters, 22 selfloop transitions, 9 changer transitions 0/359 dead transitions. [2022-11-20 11:03:30,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 359 transitions, 866 flow [2022-11-20 11:03:30,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:03:30,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:03:30,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2994 transitions. [2022-11-20 11:03:30,040 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8275290215588723 [2022-11-20 11:03:30,041 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2994 transitions. [2022-11-20 11:03:30,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2994 transitions. [2022-11-20 11:03:30,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:30,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2994 transitions. [2022-11-20 11:03:30,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 332.6666666666667) internal successors, (2994), 9 states have internal predecessors, (2994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:30,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 402.0) internal successors, (4020), 10 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:30,056 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 402.0) internal successors, (4020), 10 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:30,056 INFO L175 Difference]: Start difference. First operand has 354 places, 348 transitions, 766 flow. Second operand 9 states and 2994 transitions. [2022-11-20 11:03:30,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 359 transitions, 866 flow [2022-11-20 11:03:30,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 359 transitions, 852 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:03:30,065 INFO L231 Difference]: Finished difference. Result has 363 places, 352 transitions, 812 flow [2022-11-20 11:03:30,066 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=812, PETRI_PLACES=363, PETRI_TRANSITIONS=352} [2022-11-20 11:03:30,067 INFO L288 CegarLoopForPetriNet]: 350 programPoint places, 13 predicate places. [2022-11-20 11:03:30,067 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 352 transitions, 812 flow [2022-11-20 11:03:30,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 331.7) internal successors, (3317), 10 states have internal predecessors, (3317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:30,069 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:30,069 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] [2022-11-20 11:03:30,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:30,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-20 11:03:30,275 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-20 11:03:30,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:30,276 INFO L85 PathProgramCache]: Analyzing trace with hash -2073885041, now seen corresponding path program 2 times [2022-11-20 11:03:30,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:30,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403338027] [2022-11-20 11:03:30,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:30,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:30,352 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 11:03:30,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:30,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403338027] [2022-11-20 11:03:30,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403338027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:30,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:30,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:03:30,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484832493] [2022-11-20 11:03:30,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:30,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:03:30,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:30,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:03:30,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:03:30,357 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 402 [2022-11-20 11:03:30,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 352 transitions, 812 flow. Second operand has 4 states, 4 states have (on average 330.75) internal successors, (1323), 4 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:30,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:30,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 402 [2022-11-20 11:03:30,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:30,604 INFO L130 PetriNetUnfolder]: 14/611 cut-off events. [2022-11-20 11:03:30,604 INFO L131 PetriNetUnfolder]: For 135/344 co-relation queries the response was YES. [2022-11-20 11:03:30,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 611 events. 14/611 cut-off events. For 135/344 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2640 event pairs, 1 based on Foata normal form. 3/540 useless extension candidates. Maximal degree in co-relation 647. Up to 40 conditions per place. [2022-11-20 11:03:30,622 INFO L137 encePairwiseOnDemand]: 395/402 looper letters, 21 selfloop transitions, 4 changer transitions 0/359 dead transitions. [2022-11-20 11:03:30,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 359 transitions, 876 flow [2022-11-20 11:03:30,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:03:30,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:03:30,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1673 transitions. [2022-11-20 11:03:30,625 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8323383084577114 [2022-11-20 11:03:30,625 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1673 transitions. [2022-11-20 11:03:30,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1673 transitions. [2022-11-20 11:03:30,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:30,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1673 transitions. [2022-11-20 11:03:30,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 334.6) internal successors, (1673), 5 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:30,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:30,633 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:30,633 INFO L175 Difference]: Start difference. First operand has 363 places, 352 transitions, 812 flow. Second operand 5 states and 1673 transitions. [2022-11-20 11:03:30,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 359 transitions, 876 flow [2022-11-20 11:03:30,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 359 transitions, 860 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-20 11:03:30,641 INFO L231 Difference]: Finished difference. Result has 366 places, 355 transitions, 828 flow [2022-11-20 11:03:30,642 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=828, PETRI_PLACES=366, PETRI_TRANSITIONS=355} [2022-11-20 11:03:30,642 INFO L288 CegarLoopForPetriNet]: 350 programPoint places, 16 predicate places. [2022-11-20 11:03:30,643 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 355 transitions, 828 flow [2022-11-20 11:03:30,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 330.75) internal successors, (1323), 4 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:30,643 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:30,644 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:30,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-20 11:03:30,644 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-20 11:03:30,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:30,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1680698579, now seen corresponding path program 1 times [2022-11-20 11:03:30,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:30,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236134147] [2022-11-20 11:03:30,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:30,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:30,772 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:30,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:30,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236134147] [2022-11-20 11:03:30,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236134147] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:03:30,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90777471] [2022-11-20 11:03:30,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:30,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:30,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:03:30,775 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:03:30,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 11:03:30,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:30,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:03:30,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:30,980 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:30,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:31,109 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:31,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90777471] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:03:31,110 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:03:31,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-20 11:03:31,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947195780] [2022-11-20 11:03:31,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:31,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:03:31,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:31,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:03:31,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:03:31,118 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 402 [2022-11-20 11:03:31,124 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 355 transitions, 828 flow. Second operand has 18 states, 18 states have (on average 332.05555555555554) internal successors, (5977), 18 states have internal predecessors, (5977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:31,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:31,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 402 [2022-11-20 11:03:31,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:31,585 INFO L130 PetriNetUnfolder]: 14/639 cut-off events. [2022-11-20 11:03:31,586 INFO L131 PetriNetUnfolder]: For 111/128 co-relation queries the response was YES. [2022-11-20 11:03:31,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 840 conditions, 639 events. 14/639 cut-off events. For 111/128 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2654 event pairs, 1 based on Foata normal form. 4/576 useless extension candidates. Maximal degree in co-relation 634. Up to 20 conditions per place. [2022-11-20 11:03:31,628 INFO L137 encePairwiseOnDemand]: 396/402 looper letters, 38 selfloop transitions, 21 changer transitions 0/390 dead transitions. [2022-11-20 11:03:31,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 390 transitions, 1100 flow [2022-11-20 11:03:31,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:03:31,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:03:31,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6972 transitions. [2022-11-20 11:03:31,642 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8258706467661692 [2022-11-20 11:03:31,643 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6972 transitions. [2022-11-20 11:03:31,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6972 transitions. [2022-11-20 11:03:31,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:31,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6972 transitions. [2022-11-20 11:03:31,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 332.0) internal successors, (6972), 21 states have internal predecessors, (6972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:31,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 402.0) internal successors, (8844), 22 states have internal predecessors, (8844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:31,684 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 402.0) internal successors, (8844), 22 states have internal predecessors, (8844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:31,684 INFO L175 Difference]: Start difference. First operand has 366 places, 355 transitions, 828 flow. Second operand 21 states and 6972 transitions. [2022-11-20 11:03:31,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 390 transitions, 1100 flow [2022-11-20 11:03:31,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 390 transitions, 1098 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:03:31,694 INFO L231 Difference]: Finished difference. Result has 390 places, 368 transitions, 982 flow [2022-11-20 11:03:31,695 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=982, PETRI_PLACES=390, PETRI_TRANSITIONS=368} [2022-11-20 11:03:31,695 INFO L288 CegarLoopForPetriNet]: 350 programPoint places, 40 predicate places. [2022-11-20 11:03:31,695 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 368 transitions, 982 flow [2022-11-20 11:03:31,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 332.05555555555554) internal successors, (5977), 18 states have internal predecessors, (5977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:31,698 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:31,698 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:31,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:31,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-20 11:03:31,905 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-20 11:03:31,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:31,905 INFO L85 PathProgramCache]: Analyzing trace with hash 122538963, now seen corresponding path program 2 times [2022-11-20 11:03:31,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:31,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348980696] [2022-11-20 11:03:31,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:31,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:32,229 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:32,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:32,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348980696] [2022-11-20 11:03:32,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348980696] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:03:32,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481143942] [2022-11-20 11:03:32,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:03:32,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:32,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:03:32,231 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:03:32,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 11:03:32,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:03:32,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:03:32,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:03:32,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:32,582 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-11-20 11:03:32,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:03:32,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481143942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:32,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:03:32,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2022-11-20 11:03:32,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707812612] [2022-11-20 11:03:32,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:32,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:03:32,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:32,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:03:32,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:03:32,588 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 402 [2022-11-20 11:03:32,590 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 368 transitions, 982 flow. Second operand has 6 states, 6 states have (on average 328.5) internal successors, (1971), 6 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:32,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:32,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 402 [2022-11-20 11:03:32,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:33,411 INFO L130 PetriNetUnfolder]: 104/1441 cut-off events. [2022-11-20 11:03:33,412 INFO L131 PetriNetUnfolder]: For 511/646 co-relation queries the response was YES. [2022-11-20 11:03:33,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1960 conditions, 1441 events. 104/1441 cut-off events. For 511/646 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10245 event pairs, 11 based on Foata normal form. 0/1250 useless extension candidates. Maximal degree in co-relation 1770. Up to 68 conditions per place. [2022-11-20 11:03:33,454 INFO L137 encePairwiseOnDemand]: 395/402 looper letters, 33 selfloop transitions, 6 changer transitions 0/387 dead transitions. [2022-11-20 11:03:33,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 387 transitions, 1188 flow [2022-11-20 11:03:33,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:03:33,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:03:33,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2329 transitions. [2022-11-20 11:03:33,459 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8276474769012082 [2022-11-20 11:03:33,460 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2329 transitions. [2022-11-20 11:03:33,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2329 transitions. [2022-11-20 11:03:33,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:33,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2329 transitions. [2022-11-20 11:03:33,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 332.7142857142857) internal successors, (2329), 7 states have internal predecessors, (2329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:33,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 402.0) internal successors, (3216), 8 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:33,473 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 402.0) internal successors, (3216), 8 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:33,473 INFO L175 Difference]: Start difference. First operand has 390 places, 368 transitions, 982 flow. Second operand 7 states and 2329 transitions. [2022-11-20 11:03:33,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 387 transitions, 1188 flow [2022-11-20 11:03:33,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 387 transitions, 1132 flow, removed 20 selfloop flow, removed 8 redundant places. [2022-11-20 11:03:33,484 INFO L231 Difference]: Finished difference. Result has 387 places, 367 transitions, 936 flow [2022-11-20 11:03:33,485 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=936, PETRI_PLACES=387, PETRI_TRANSITIONS=367} [2022-11-20 11:03:33,486 INFO L288 CegarLoopForPetriNet]: 350 programPoint places, 37 predicate places. [2022-11-20 11:03:33,486 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 367 transitions, 936 flow [2022-11-20 11:03:33,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 328.5) internal successors, (1971), 6 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:33,487 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:33,488 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 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] [2022-11-20 11:03:33,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:33,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-20 11:03:33,694 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-20 11:03:33,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:33,695 INFO L85 PathProgramCache]: Analyzing trace with hash 315870470, now seen corresponding path program 1 times [2022-11-20 11:03:33,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:33,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157044581] [2022-11-20 11:03:33,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:33,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:33,762 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-20 11:03:33,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:33,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157044581] [2022-11-20 11:03:33,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157044581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:33,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:33,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:03:33,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465677305] [2022-11-20 11:03:33,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:33,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:03:33,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:33,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:03:33,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:03:33,766 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 402 [2022-11-20 11:03:33,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 367 transitions, 936 flow. Second operand has 4 states, 4 states have (on average 332.75) internal successors, (1331), 4 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:33,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:33,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 402 [2022-11-20 11:03:33,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:34,013 INFO L130 PetriNetUnfolder]: 14/636 cut-off events. [2022-11-20 11:03:34,013 INFO L131 PetriNetUnfolder]: For 175/368 co-relation queries the response was YES. [2022-11-20 11:03:34,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 636 events. 14/636 cut-off events. For 175/368 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2635 event pairs, 1 based on Foata normal form. 11/582 useless extension candidates. Maximal degree in co-relation 664. Up to 20 conditions per place. [2022-11-20 11:03:34,034 INFO L137 encePairwiseOnDemand]: 396/402 looper letters, 13 selfloop transitions, 8 changer transitions 0/367 dead transitions. [2022-11-20 11:03:34,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 367 transitions, 976 flow [2022-11-20 11:03:34,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:03:34,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:03:34,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1664 transitions. [2022-11-20 11:03:34,038 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8278606965174129 [2022-11-20 11:03:34,038 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1664 transitions. [2022-11-20 11:03:34,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1664 transitions. [2022-11-20 11:03:34,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:34,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1664 transitions. [2022-11-20 11:03:34,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 332.8) internal successors, (1664), 5 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:34,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:34,045 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:34,045 INFO L175 Difference]: Start difference. First operand has 387 places, 367 transitions, 936 flow. Second operand 5 states and 1664 transitions. [2022-11-20 11:03:34,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 367 transitions, 976 flow [2022-11-20 11:03:34,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 367 transitions, 964 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 11:03:34,057 INFO L231 Difference]: Finished difference. Result has 385 places, 367 transitions, 944 flow [2022-11-20 11:03:34,058 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=944, PETRI_PLACES=385, PETRI_TRANSITIONS=367} [2022-11-20 11:03:34,058 INFO L288 CegarLoopForPetriNet]: 350 programPoint places, 35 predicate places. [2022-11-20 11:03:34,058 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 367 transitions, 944 flow [2022-11-20 11:03:34,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 332.75) internal successors, (1331), 4 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:34,059 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:34,059 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:34,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-20 11:03:34,060 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-20 11:03:34,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:34,060 INFO L85 PathProgramCache]: Analyzing trace with hash -496257925, now seen corresponding path program 1 times [2022-11-20 11:03:34,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:34,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388430014] [2022-11-20 11:03:34,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:34,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:34,476 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:34,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:34,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388430014] [2022-11-20 11:03:34,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388430014] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:03:34,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430258823] [2022-11-20 11:03:34,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:34,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:34,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:03:34,479 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:03:34,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 11:03:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:34,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:03:34,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:34,789 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:34,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:35,037 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:35,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430258823] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:03:35,038 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:03:35,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-20 11:03:35,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293479371] [2022-11-20 11:03:35,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:35,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:03:35,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:35,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:03:35,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:03:35,048 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 402 [2022-11-20 11:03:35,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 367 transitions, 944 flow. Second operand has 23 states, 23 states have (on average 332.30434782608694) internal successors, (7643), 23 states have internal predecessors, (7643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:35,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:35,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 402 [2022-11-20 11:03:35,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:35,722 INFO L130 PetriNetUnfolder]: 14/657 cut-off events. [2022-11-20 11:03:35,722 INFO L131 PetriNetUnfolder]: For 225/242 co-relation queries the response was YES. [2022-11-20 11:03:35,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 657 events. 14/657 cut-off events. For 225/242 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2622 event pairs, 1 based on Foata normal form. 3/594 useless extension candidates. Maximal degree in co-relation 676. Up to 20 conditions per place. [2022-11-20 11:03:35,741 INFO L137 encePairwiseOnDemand]: 396/402 looper letters, 50 selfloop transitions, 30 changer transitions 0/410 dead transitions. [2022-11-20 11:03:35,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 410 transitions, 1290 flow [2022-11-20 11:03:35,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 11:03:35,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 11:03:35,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 9953 transitions. [2022-11-20 11:03:35,755 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8252902155887231 [2022-11-20 11:03:35,755 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 9953 transitions. [2022-11-20 11:03:35,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 9953 transitions. [2022-11-20 11:03:35,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:35,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 9953 transitions. [2022-11-20 11:03:35,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 331.76666666666665) internal successors, (9953), 30 states have internal predecessors, (9953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:35,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 402.0) internal successors, (12462), 31 states have internal predecessors, (12462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:35,788 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 402.0) internal successors, (12462), 31 states have internal predecessors, (12462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:35,788 INFO L175 Difference]: Start difference. First operand has 385 places, 367 transitions, 944 flow. Second operand 30 states and 9953 transitions. [2022-11-20 11:03:35,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 410 transitions, 1290 flow [2022-11-20 11:03:35,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 410 transitions, 1278 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:03:35,798 INFO L231 Difference]: Finished difference. Result has 415 places, 377 transitions, 1086 flow [2022-11-20 11:03:35,799 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1086, PETRI_PLACES=415, PETRI_TRANSITIONS=377} [2022-11-20 11:03:35,800 INFO L288 CegarLoopForPetriNet]: 350 programPoint places, 65 predicate places. [2022-11-20 11:03:35,800 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 377 transitions, 1086 flow [2022-11-20 11:03:35,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 332.30434782608694) internal successors, (7643), 23 states have internal predecessors, (7643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:35,803 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:35,803 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] [2022-11-20 11:03:35,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:36,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:36,010 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-20 11:03:36,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:36,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1742228009, now seen corresponding path program 2 times [2022-11-20 11:03:36,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:36,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114753346] [2022-11-20 11:03:36,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:36,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:36,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:36,124 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:03:36,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:36,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114753346] [2022-11-20 11:03:36,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114753346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:36,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:36,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:03:36,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258928068] [2022-11-20 11:03:36,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:36,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:03:36,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:36,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:03:36,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:03:36,129 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 402 [2022-11-20 11:03:36,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 377 transitions, 1086 flow. Second operand has 5 states, 5 states have (on average 330.8) internal successors, (1654), 5 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:36,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:36,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 402 [2022-11-20 11:03:36,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:36,794 INFO L130 PetriNetUnfolder]: 90/1714 cut-off events. [2022-11-20 11:03:36,795 INFO L131 PetriNetUnfolder]: For 504/571 co-relation queries the response was YES. [2022-11-20 11:03:36,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2228 conditions, 1714 events. 90/1714 cut-off events. For 504/571 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 12694 event pairs, 16 based on Foata normal form. 0/1511 useless extension candidates. Maximal degree in co-relation 1964. Up to 57 conditions per place. [2022-11-20 11:03:36,846 INFO L137 encePairwiseOnDemand]: 396/402 looper letters, 27 selfloop transitions, 5 changer transitions 0/392 dead transitions. [2022-11-20 11:03:36,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 392 transitions, 1252 flow [2022-11-20 11:03:36,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:03:36,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:03:36,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2007 transitions. [2022-11-20 11:03:36,851 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.832089552238806 [2022-11-20 11:03:36,851 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2007 transitions. [2022-11-20 11:03:36,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2007 transitions. [2022-11-20 11:03:36,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:36,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2007 transitions. [2022-11-20 11:03:36,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 334.5) internal successors, (2007), 6 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:36,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 402.0) internal successors, (2814), 7 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:36,864 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 402.0) internal successors, (2814), 7 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:36,865 INFO L175 Difference]: Start difference. First operand has 415 places, 377 transitions, 1086 flow. Second operand 6 states and 2007 transitions. [2022-11-20 11:03:36,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 392 transitions, 1252 flow [2022-11-20 11:03:36,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 392 transitions, 1206 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-20 11:03:36,877 INFO L231 Difference]: Finished difference. Result has 401 places, 376 transitions, 1048 flow [2022-11-20 11:03:36,878 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1048, PETRI_PLACES=401, PETRI_TRANSITIONS=376} [2022-11-20 11:03:36,881 INFO L288 CegarLoopForPetriNet]: 350 programPoint places, 51 predicate places. [2022-11-20 11:03:36,881 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 376 transitions, 1048 flow [2022-11-20 11:03:36,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 330.8) internal successors, (1654), 5 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:36,882 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:36,882 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] [2022-11-20 11:03:36,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-20 11:03:36,883 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-20 11:03:36,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:36,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1231684272, now seen corresponding path program 1 times [2022-11-20 11:03:36,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:36,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822769982] [2022-11-20 11:03:36,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:36,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:37,016 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:03:37,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:37,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822769982] [2022-11-20 11:03:37,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822769982] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:03:37,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108769884] [2022-11-20 11:03:37,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:37,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:37,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:03:37,019 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:03:37,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 11:03:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:37,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:03:37,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:37,249 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:03:37,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:03:37,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108769884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:37,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:03:37,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:03:37,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755594348] [2022-11-20 11:03:37,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:37,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:03:37,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:37,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:03:37,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:03:37,255 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 402 [2022-11-20 11:03:37,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 376 transitions, 1048 flow. Second operand has 6 states, 6 states have (on average 331.6666666666667) internal successors, (1990), 6 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:37,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:37,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 402 [2022-11-20 11:03:37,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:37,543 INFO L130 PetriNetUnfolder]: 14/654 cut-off events. [2022-11-20 11:03:37,544 INFO L131 PetriNetUnfolder]: For 284/461 co-relation queries the response was YES. [2022-11-20 11:03:37,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 911 conditions, 654 events. 14/654 cut-off events. For 284/461 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2646 event pairs, 1 based on Foata normal form. 8/597 useless extension candidates. Maximal degree in co-relation 722. Up to 26 conditions per place. [2022-11-20 11:03:37,561 INFO L137 encePairwiseOnDemand]: 397/402 looper letters, 17 selfloop transitions, 6 changer transitions 0/378 dead transitions. [2022-11-20 11:03:37,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 378 transitions, 1096 flow [2022-11-20 11:03:37,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:03:37,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:03:37,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2327 transitions. [2022-11-20 11:03:37,565 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8269367448471926 [2022-11-20 11:03:37,565 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2327 transitions. [2022-11-20 11:03:37,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2327 transitions. [2022-11-20 11:03:37,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:37,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2327 transitions. [2022-11-20 11:03:37,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 332.42857142857144) internal successors, (2327), 7 states have internal predecessors, (2327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:37,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 402.0) internal successors, (3216), 8 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:37,572 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 402.0) internal successors, (3216), 8 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:37,573 INFO L175 Difference]: Start difference. First operand has 401 places, 376 transitions, 1048 flow. Second operand 7 states and 2327 transitions. [2022-11-20 11:03:37,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 378 transitions, 1096 flow [2022-11-20 11:03:37,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 378 transitions, 1086 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:03:37,582 INFO L231 Difference]: Finished difference. Result has 401 places, 375 transitions, 1046 flow [2022-11-20 11:03:37,583 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1046, PETRI_PLACES=401, PETRI_TRANSITIONS=375} [2022-11-20 11:03:37,583 INFO L288 CegarLoopForPetriNet]: 350 programPoint places, 51 predicate places. [2022-11-20 11:03:37,583 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 375 transitions, 1046 flow [2022-11-20 11:03:37,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 331.6666666666667) internal successors, (1990), 6 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:37,584 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:37,584 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] [2022-11-20 11:03:37,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:37,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:37,790 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-20 11:03:37,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:37,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1116082422, now seen corresponding path program 1 times [2022-11-20 11:03:37,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:37,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944245845] [2022-11-20 11:03:37,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:37,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:37,891 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:03:37,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:37,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944245845] [2022-11-20 11:03:37,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944245845] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:03:37,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773226441] [2022-11-20 11:03:37,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:37,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:03:37,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:03:37,894 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:03:37,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 11:03:38,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:38,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:03:38,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:38,100 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:03:38,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:38,139 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:03:38,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773226441] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:03:38,140 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:03:38,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 11:03:38,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575260125] [2022-11-20 11:03:38,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:38,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:03:38,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:38,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:03:38,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:03:38,144 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 402 [2022-11-20 11:03:38,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 375 transitions, 1046 flow. Second operand has 10 states, 10 states have (on average 331.9) internal successors, (3319), 10 states have internal predecessors, (3319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:38,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:38,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 402 [2022-11-20 11:03:38,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:38,388 INFO L130 PetriNetUnfolder]: 10/550 cut-off events. [2022-11-20 11:03:38,388 INFO L131 PetriNetUnfolder]: For 255/272 co-relation queries the response was YES. [2022-11-20 11:03:38,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 806 conditions, 550 events. 10/550 cut-off events. For 255/272 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1593 event pairs, 5 based on Foata normal form. 3/500 useless extension candidates. Maximal degree in co-relation 562. Up to 17 conditions per place. [2022-11-20 11:03:38,403 INFO L137 encePairwiseOnDemand]: 396/402 looper letters, 22 selfloop transitions, 9 changer transitions 0/386 dead transitions. [2022-11-20 11:03:38,404 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 386 transitions, 1146 flow [2022-11-20 11:03:38,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:03:38,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:03:38,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2994 transitions. [2022-11-20 11:03:38,409 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8275290215588723 [2022-11-20 11:03:38,409 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2994 transitions. [2022-11-20 11:03:38,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2994 transitions. [2022-11-20 11:03:38,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:38,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2994 transitions. [2022-11-20 11:03:38,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 332.6666666666667) internal successors, (2994), 9 states have internal predecessors, (2994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:38,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 402.0) internal successors, (4020), 10 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:38,420 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 402.0) internal successors, (4020), 10 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:38,420 INFO L175 Difference]: Start difference. First operand has 401 places, 375 transitions, 1046 flow. Second operand 9 states and 2994 transitions. [2022-11-20 11:03:38,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 386 transitions, 1146 flow [2022-11-20 11:03:38,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 386 transitions, 1133 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-20 11:03:38,431 INFO L231 Difference]: Finished difference. Result has 408 places, 379 transitions, 1093 flow [2022-11-20 11:03:38,431 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1093, PETRI_PLACES=408, PETRI_TRANSITIONS=379} [2022-11-20 11:03:38,432 INFO L288 CegarLoopForPetriNet]: 350 programPoint places, 58 predicate places. [2022-11-20 11:03:38,432 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 379 transitions, 1093 flow [2022-11-20 11:03:38,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 331.9) internal successors, (3319), 10 states have internal predecessors, (3319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:38,433 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:38,433 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:38,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:38,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a87ff0-d1a2-4a83-a88e-4870c148d7a8/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-20 11:03:38,641 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-20 11:03:38,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:38,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1494582648, now seen corresponding path program 1 times [2022-11-20 11:03:38,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:38,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752769596] [2022-11-20 11:03:38,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:38,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:38,877 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-11-20 11:03:38,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:38,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752769596] [2022-11-20 11:03:38,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752769596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:38,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:38,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:03:38,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165087411] [2022-11-20 11:03:38,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:38,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:03:38,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:38,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:03:38,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:03:38,882 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 402 [2022-11-20 11:03:38,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 379 transitions, 1093 flow. Second operand has 6 states, 6 states have (on average 328.6666666666667) internal successors, (1972), 6 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:38,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:38,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 402 [2022-11-20 11:03:38,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:03:39,323 INFO L130 PetriNetUnfolder]: 78/1033 cut-off events. [2022-11-20 11:03:39,324 INFO L131 PetriNetUnfolder]: For 535/550 co-relation queries the response was YES. [2022-11-20 11:03:39,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1531 conditions, 1033 events. 78/1033 cut-off events. For 535/550 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5785 event pairs, 18 based on Foata normal form. 0/899 useless extension candidates. Maximal degree in co-relation 1286. Up to 64 conditions per place. [2022-11-20 11:03:39,356 INFO L137 encePairwiseOnDemand]: 395/402 looper letters, 28 selfloop transitions, 6 changer transitions 0/393 dead transitions. [2022-11-20 11:03:39,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 393 transitions, 1254 flow [2022-11-20 11:03:39,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:03:39,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:03:39,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2324 transitions. [2022-11-20 11:03:39,360 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8258706467661692 [2022-11-20 11:03:39,360 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2324 transitions. [2022-11-20 11:03:39,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2324 transitions. [2022-11-20 11:03:39,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:03:39,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2324 transitions. [2022-11-20 11:03:39,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 332.0) internal successors, (2324), 7 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:39,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 402.0) internal successors, (3216), 8 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:39,368 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 402.0) internal successors, (3216), 8 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:39,368 INFO L175 Difference]: Start difference. First operand has 408 places, 379 transitions, 1093 flow. Second operand 7 states and 2324 transitions. [2022-11-20 11:03:39,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 393 transitions, 1254 flow [2022-11-20 11:03:39,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 393 transitions, 1240 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-20 11:03:39,379 INFO L231 Difference]: Finished difference. Result has 409 places, 378 transitions, 1089 flow [2022-11-20 11:03:39,380 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=1077, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1089, PETRI_PLACES=409, PETRI_TRANSITIONS=378} [2022-11-20 11:03:39,381 INFO L288 CegarLoopForPetriNet]: 350 programPoint places, 59 predicate places. [2022-11-20 11:03:39,381 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 378 transitions, 1089 flow [2022-11-20 11:03:39,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 328.6666666666667) internal successors, (1972), 6 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:39,382 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:03:39,382 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] [2022-11-20 11:03:39,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-20 11:03:39,382 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-20 11:03:39,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:39,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1588045737, now seen corresponding path program 1 times [2022-11-20 11:03:39,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:39,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259140189] [2022-11-20 11:03:39,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:39,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:40,231 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-20 11:03:40,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:40,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259140189] [2022-11-20 11:03:40,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259140189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:40,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:40,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 11:03:40,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467930618] [2022-11-20 11:03:40,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:40,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:03:40,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:40,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:03:40,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:03:40,237 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 402 [2022-11-20 11:03:40,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 378 transitions, 1089 flow. Second operand has 12 states, 12 states have (on average 263.1666666666667) internal successors, (3158), 12 states have internal predecessors, (3158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:40,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:03:40,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 402 [2022-11-20 11:03:40,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand