./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_96775c53-1091-4857-b681-feba781aaa01/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96775c53-1091-4857-b681-feba781aaa01/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96775c53-1091-4857-b681-feba781aaa01/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96775c53-1091-4857-b681-feba781aaa01/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96775c53-1091-4857-b681-feba781aaa01/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96775c53-1091-4857-b681-feba781aaa01/bin/uautomizer-TMbwUNV5ro --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 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 --- 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-8393723 [2022-11-18 18:28:29,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:28:29,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:28:29,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:28:29,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:28:29,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:28:29,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:28:29,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:28:29,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:28:29,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:28:29,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:28:29,889 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:28:29,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:28:29,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:28:29,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:28:29,895 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:28:29,897 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:28:29,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:28:29,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:28:29,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:28:29,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:28:29,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:28:29,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:28:29,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:28:29,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:28:29,925 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:28:29,925 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:28:29,926 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:28:29,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:28:29,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:28:29,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:28:29,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:28:29,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:28:29,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:28:29,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:28:29,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:28:29,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:28:29,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:28:29,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:28:29,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:28:29,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:28:29,941 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96775c53-1091-4857-b681-feba781aaa01/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 18:28:29,985 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:28:29,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:28:29,986 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:28:29,986 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:28:29,987 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:28:29,988 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:28:29,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:28:29,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:28:29,989 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:28:29,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:28:29,991 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:28:29,991 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:28:29,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:28:29,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:28:29,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:28:29,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:28:29,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:28:29,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:28:29,993 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 18:28:29,993 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:28:29,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:28:29,993 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:28:29,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:28:29,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:28:29,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:28:29,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:28:29,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:28:29,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:28:29,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:28:29,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:28:29,997 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:28:29,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:28:29,998 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:28:29,998 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:28:29,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:28:29,998 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_96775c53-1091-4857-b681-feba781aaa01/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96775c53-1091-4857-b681-feba781aaa01/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 [2022-11-18 18:28:30,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:28:30,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:28:30,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:28:30,347 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:28:30,348 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:28:30,349 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96775c53-1091-4857-b681-feba781aaa01/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2022-11-18 18:28:30,443 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96775c53-1091-4857-b681-feba781aaa01/bin/uautomizer-TMbwUNV5ro/data/9cb447b65/ca60309f58094865b53e5f7e1f2fda47/FLAGd69e56f4e [2022-11-18 18:28:30,956 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:28:30,957 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96775c53-1091-4857-b681-feba781aaa01/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2022-11-18 18:28:30,966 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96775c53-1091-4857-b681-feba781aaa01/bin/uautomizer-TMbwUNV5ro/data/9cb447b65/ca60309f58094865b53e5f7e1f2fda47/FLAGd69e56f4e [2022-11-18 18:28:31,307 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96775c53-1091-4857-b681-feba781aaa01/bin/uautomizer-TMbwUNV5ro/data/9cb447b65/ca60309f58094865b53e5f7e1f2fda47 [2022-11-18 18:28:31,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:28:31,312 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:28:31,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:28:31,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:28:31,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:28:31,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:28:31" (1/1) ... [2022-11-18 18:28:31,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d739082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:31, skipping insertion in model container [2022-11-18 18:28:31,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:28:31" (1/1) ... [2022-11-18 18:28:31,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:28:31,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:28:31,602 WARN L234 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_96775c53-1091-4857-b681-feba781aaa01/sv-benchmarks/c/weaver/parallel-barrier.wvr.c[4722,4735] [2022-11-18 18:28:31,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:28:31,613 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:28:31,652 WARN L234 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_96775c53-1091-4857-b681-feba781aaa01/sv-benchmarks/c/weaver/parallel-barrier.wvr.c[4722,4735] [2022-11-18 18:28:31,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:28:31,676 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:28:31,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:31 WrapperNode [2022-11-18 18:28:31,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:28:31,678 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:28:31,678 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:28:31,678 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:28:31,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:31" (1/1) ... [2022-11-18 18:28:31,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:31" (1/1) ... [2022-11-18 18:28:31,730 INFO L138 Inliner]: procedures = 25, calls = 98, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 269 [2022-11-18 18:28:31,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:28:31,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:28:31,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:28:31,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:28:31,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:31" (1/1) ... [2022-11-18 18:28:31,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:31" (1/1) ... [2022-11-18 18:28:31,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:31" (1/1) ... [2022-11-18 18:28:31,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:31" (1/1) ... [2022-11-18 18:28:31,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:31" (1/1) ... [2022-11-18 18:28:31,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:31" (1/1) ... [2022-11-18 18:28:31,771 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:31" (1/1) ... [2022-11-18 18:28:31,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:31" (1/1) ... [2022-11-18 18:28:31,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:28:31,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:28:31,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:28:31,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:28:31,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:31" (1/1) ... [2022-11-18 18:28:31,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:28:31,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96775c53-1091-4857-b681-feba781aaa01/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:28:31,828 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96775c53-1091-4857-b681-feba781aaa01/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:28:31,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96775c53-1091-4857-b681-feba781aaa01/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:28:31,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:28:31,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:28:31,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:28:31,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:28:31,888 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 18:28:31,889 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 18:28:31,889 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 18:28:31,889 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 18:28:31,889 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 18:28:31,890 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 18:28:31,890 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-18 18:28:31,890 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-18 18:28:31,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:28:31,890 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-18 18:28:31,891 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-18 18:28:31,891 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-18 18:28:31,891 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-18 18:28:31,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 18:28:31,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 18:28:31,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:28:31,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:28:31,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:28:31,894 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:28:32,053 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:28:32,056 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:28:32,478 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:28:32,608 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:28:32,608 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 18:28:32,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:28:32 BoogieIcfgContainer [2022-11-18 18:28:32,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:28:32,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:28:32,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:28:32,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:28:32,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:28:31" (1/3) ... [2022-11-18 18:28:32,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c8dd246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:28:32, skipping insertion in model container [2022-11-18 18:28:32,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:28:31" (2/3) ... [2022-11-18 18:28:32,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c8dd246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:28:32, skipping insertion in model container [2022-11-18 18:28:32,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:28:32" (3/3) ... [2022-11-18 18:28:32,634 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2022-11-18 18:28:32,644 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:28:32,656 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:28:32,656 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-18 18:28:32,656 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:28:32,791 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-11-18 18:28:32,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 250 transitions, 572 flow [2022-11-18 18:28:33,030 INFO L130 PetriNetUnfolder]: 8/222 cut-off events. [2022-11-18 18:28:33,030 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 18:28:33,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 222 events. 8/222 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 341 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 189. Up to 3 conditions per place. [2022-11-18 18:28:33,051 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 250 transitions, 572 flow [2022-11-18 18:28:33,065 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 215 places, 203 transitions, 451 flow [2022-11-18 18:28:33,082 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:28:33,089 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;@3ffc5695, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:28:33,089 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2022-11-18 18:28:33,121 INFO L130 PetriNetUnfolder]: 3/107 cut-off events. [2022-11-18 18:28:33,121 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:28:33,122 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:33,122 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:33,123 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-18 18:28:33,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:33,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1235103673, now seen corresponding path program 1 times [2022-11-18 18:28:33,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:33,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856637225] [2022-11-18 18:28:33,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:33,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:34,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:28:34,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:34,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856637225] [2022-11-18 18:28:34,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856637225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:28:34,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:28:34,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:28:34,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982896434] [2022-11-18 18:28:34,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:28:34,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:28:34,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:34,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:28:34,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:28:34,363 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 254 [2022-11-18 18:28:34,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 203 transitions, 451 flow. Second operand has 12 states, 12 states have (on average 171.75) internal successors, (2061), 12 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:34,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:28:34,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 254 [2022-11-18 18:28:34,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:28:43,734 INFO L130 PetriNetUnfolder]: 25565/45186 cut-off events. [2022-11-18 18:28:43,734 INFO L131 PetriNetUnfolder]: For 9251/9251 co-relation queries the response was YES. [2022-11-18 18:28:43,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88875 conditions, 45186 events. 25565/45186 cut-off events. For 9251/9251 co-relation queries the response was YES. Maximal size of possible extension queue 1640. Compared 408398 event pairs, 836 based on Foata normal form. 199/34129 useless extension candidates. Maximal degree in co-relation 87760. Up to 8998 conditions per place. [2022-11-18 18:28:44,591 INFO L137 encePairwiseOnDemand]: 226/254 looper letters, 428 selfloop transitions, 62 changer transitions 1/626 dead transitions. [2022-11-18 18:28:44,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 626 transitions, 2567 flow [2022-11-18 18:28:44,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 18:28:44,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-18 18:28:44,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 4424 transitions. [2022-11-18 18:28:44,618 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7572749058541596 [2022-11-18 18:28:44,620 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 4424 transitions. [2022-11-18 18:28:44,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 4424 transitions. [2022-11-18 18:28:44,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:28:44,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 4424 transitions. [2022-11-18 18:28:44,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 192.34782608695653) internal successors, (4424), 23 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:44,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 254.0) internal successors, (6096), 24 states have internal predecessors, (6096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:44,674 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 254.0) internal successors, (6096), 24 states have internal predecessors, (6096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:44,676 INFO L175 Difference]: Start difference. First operand has 215 places, 203 transitions, 451 flow. Second operand 23 states and 4424 transitions. [2022-11-18 18:28:44,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 626 transitions, 2567 flow [2022-11-18 18:28:44,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 626 transitions, 2355 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-18 18:28:44,787 INFO L231 Difference]: Finished difference. Result has 242 places, 250 transitions, 842 flow [2022-11-18 18:28:44,790 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=842, PETRI_PLACES=242, PETRI_TRANSITIONS=250} [2022-11-18 18:28:44,797 INFO L288 CegarLoopForPetriNet]: 215 programPoint places, 27 predicate places. [2022-11-18 18:28:44,798 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 250 transitions, 842 flow [2022-11-18 18:28:44,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 171.75) internal successors, (2061), 12 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:44,800 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:44,800 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:44,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:28:44,801 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-18 18:28:44,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:44,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1235103674, now seen corresponding path program 1 times [2022-11-18 18:28:44,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:44,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023320684] [2022-11-18 18:28:44,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:44,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:45,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:28:45,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:45,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023320684] [2022-11-18 18:28:45,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023320684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:28:45,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:28:45,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:28:45,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035430457] [2022-11-18 18:28:45,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:28:45,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:28:45,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:45,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:28:45,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:28:45,031 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 254 [2022-11-18 18:28:45,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 250 transitions, 842 flow. Second operand has 5 states, 5 states have (on average 192.6) internal successors, (963), 5 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:45,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:28:45,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 254 [2022-11-18 18:28:45,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:28:49,937 INFO L130 PetriNetUnfolder]: 12562/23841 cut-off events. [2022-11-18 18:28:49,938 INFO L131 PetriNetUnfolder]: For 50619/50667 co-relation queries the response was YES. [2022-11-18 18:28:50,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59428 conditions, 23841 events. 12562/23841 cut-off events. For 50619/50667 co-relation queries the response was YES. Maximal size of possible extension queue 1025. Compared 218843 event pairs, 6668 based on Foata normal form. 473/21346 useless extension candidates. Maximal degree in co-relation 58300. Up to 11419 conditions per place. [2022-11-18 18:28:50,232 INFO L137 encePairwiseOnDemand]: 245/254 looper letters, 111 selfloop transitions, 15 changer transitions 0/278 dead transitions. [2022-11-18 18:28:50,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 278 transitions, 1227 flow [2022-11-18 18:28:50,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:28:50,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:28:50,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1023 transitions. [2022-11-18 18:28:50,237 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.805511811023622 [2022-11-18 18:28:50,237 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1023 transitions. [2022-11-18 18:28:50,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1023 transitions. [2022-11-18 18:28:50,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:28:50,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1023 transitions. [2022-11-18 18:28:50,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 204.6) internal successors, (1023), 5 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:50,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:50,246 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:50,246 INFO L175 Difference]: Start difference. First operand has 242 places, 250 transitions, 842 flow. Second operand 5 states and 1023 transitions. [2022-11-18 18:28:50,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 278 transitions, 1227 flow [2022-11-18 18:28:50,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 278 transitions, 1223 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:28:50,422 INFO L231 Difference]: Finished difference. Result has 242 places, 247 transitions, 850 flow [2022-11-18 18:28:50,423 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=850, PETRI_PLACES=242, PETRI_TRANSITIONS=247} [2022-11-18 18:28:50,424 INFO L288 CegarLoopForPetriNet]: 215 programPoint places, 27 predicate places. [2022-11-18 18:28:50,424 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 247 transitions, 850 flow [2022-11-18 18:28:50,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 192.6) internal successors, (963), 5 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:50,425 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:50,425 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:50,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:28:50,426 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-18 18:28:50,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:50,426 INFO L85 PathProgramCache]: Analyzing trace with hash -329935554, now seen corresponding path program 1 times [2022-11-18 18:28:50,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:50,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108020051] [2022-11-18 18:28:50,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:50,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:50,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:50,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:28:50,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:50,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108020051] [2022-11-18 18:28:50,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108020051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:28:50,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:28:50,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:28:50,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287563977] [2022-11-18 18:28:50,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:28:50,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:28:50,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:50,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:28:50,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:28:50,535 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 254 [2022-11-18 18:28:50,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 247 transitions, 850 flow. Second operand has 5 states, 5 states have (on average 193.2) internal successors, (966), 5 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:50,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:28:50,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 254 [2022-11-18 18:28:50,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:28:54,087 INFO L130 PetriNetUnfolder]: 10642/20770 cut-off events. [2022-11-18 18:28:54,088 INFO L131 PetriNetUnfolder]: For 46921/46979 co-relation queries the response was YES. [2022-11-18 18:28:54,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51857 conditions, 20770 events. 10642/20770 cut-off events. For 46921/46979 co-relation queries the response was YES. Maximal size of possible extension queue 890. Compared 190945 event pairs, 4679 based on Foata normal form. 626/18681 useless extension candidates. Maximal degree in co-relation 50850. Up to 8433 conditions per place. [2022-11-18 18:28:54,353 INFO L137 encePairwiseOnDemand]: 246/254 looper letters, 114 selfloop transitions, 9 changer transitions 0/275 dead transitions. [2022-11-18 18:28:54,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 275 transitions, 1229 flow [2022-11-18 18:28:54,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:28:54,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:28:54,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1022 transitions. [2022-11-18 18:28:54,357 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8047244094488188 [2022-11-18 18:28:54,358 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1022 transitions. [2022-11-18 18:28:54,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1022 transitions. [2022-11-18 18:28:54,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:28:54,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1022 transitions. [2022-11-18 18:28:54,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 204.4) internal successors, (1022), 5 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:54,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:54,366 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:54,366 INFO L175 Difference]: Start difference. First operand has 242 places, 247 transitions, 850 flow. Second operand 5 states and 1022 transitions. [2022-11-18 18:28:54,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 275 transitions, 1229 flow [2022-11-18 18:28:54,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 275 transitions, 1192 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:28:54,595 INFO L231 Difference]: Finished difference. Result has 240 places, 244 transitions, 815 flow [2022-11-18 18:28:54,595 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=815, PETRI_PLACES=240, PETRI_TRANSITIONS=244} [2022-11-18 18:28:54,596 INFO L288 CegarLoopForPetriNet]: 215 programPoint places, 25 predicate places. [2022-11-18 18:28:54,596 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 244 transitions, 815 flow [2022-11-18 18:28:54,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 193.2) internal successors, (966), 5 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:54,597 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:28:54,597 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:54,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:28:54,598 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread5Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-18 18:28:54,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:54,599 INFO L85 PathProgramCache]: Analyzing trace with hash 2133651986, now seen corresponding path program 1 times [2022-11-18 18:28:54,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:28:54,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738422185] [2022-11-18 18:28:54,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:54,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:28:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:54,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:28:54,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:28:54,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738422185] [2022-11-18 18:28:54,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738422185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:28:54,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:28:54,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:28:54,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229794901] [2022-11-18 18:28:54,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:28:54,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:28:54,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:28:54,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:28:54,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:28:54,848 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 254 [2022-11-18 18:28:54,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 244 transitions, 815 flow. Second operand has 7 states, 7 states have (on average 189.14285714285714) internal successors, (1324), 7 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:28:54,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:28:54,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 254 [2022-11-18 18:28:54,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:28:59,922 INFO L130 PetriNetUnfolder]: 15683/29094 cut-off events. [2022-11-18 18:28:59,923 INFO L131 PetriNetUnfolder]: For 68852/71138 co-relation queries the response was YES. [2022-11-18 18:29:00,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72719 conditions, 29094 events. 15683/29094 cut-off events. For 68852/71138 co-relation queries the response was YES. Maximal size of possible extension queue 1295. Compared 271589 event pairs, 550 based on Foata normal form. 720/25807 useless extension candidates. Maximal degree in co-relation 66093. Up to 8395 conditions per place. [2022-11-18 18:29:00,229 INFO L137 encePairwiseOnDemand]: 236/254 looper letters, 285 selfloop transitions, 55 changer transitions 0/497 dead transitions. [2022-11-18 18:29:00,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 497 transitions, 2607 flow [2022-11-18 18:29:00,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:29:00,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:29:00,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2291 transitions. [2022-11-18 18:29:00,237 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8199713672154617 [2022-11-18 18:29:00,239 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2291 transitions. [2022-11-18 18:29:00,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2291 transitions. [2022-11-18 18:29:00,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:29:00,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2291 transitions. [2022-11-18 18:29:00,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 208.27272727272728) internal successors, (2291), 11 states have internal predecessors, (2291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:00,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:00,260 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:00,260 INFO L175 Difference]: Start difference. First operand has 240 places, 244 transitions, 815 flow. Second operand 11 states and 2291 transitions. [2022-11-18 18:29:00,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 497 transitions, 2607 flow [2022-11-18 18:29:00,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 497 transitions, 2589 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 18:29:00,431 INFO L231 Difference]: Finished difference. Result has 251 places, 271 transitions, 1152 flow [2022-11-18 18:29:00,432 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1152, PETRI_PLACES=251, PETRI_TRANSITIONS=271} [2022-11-18 18:29:00,433 INFO L288 CegarLoopForPetriNet]: 215 programPoint places, 36 predicate places. [2022-11-18 18:29:00,433 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 271 transitions, 1152 flow [2022-11-18 18:29:00,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 189.14285714285714) internal successors, (1324), 7 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:00,434 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:29:00,434 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:00,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:29:00,434 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-18 18:29:00,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:00,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1562090604, now seen corresponding path program 1 times [2022-11-18 18:29:00,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:00,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370286537] [2022-11-18 18:29:00,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:00,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:00,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:00,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:00,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370286537] [2022-11-18 18:29:00,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370286537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:29:00,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:29:00,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:29:00,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045168530] [2022-11-18 18:29:00,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:29:00,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:29:00,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:00,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:29:00,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:29:00,880 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 254 [2022-11-18 18:29:00,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 271 transitions, 1152 flow. Second operand has 8 states, 8 states have (on average 176.375) internal successors, (1411), 8 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:00,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:29:00,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 254 [2022-11-18 18:29:00,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:29:08,829 INFO L130 PetriNetUnfolder]: 23847/44079 cut-off events. [2022-11-18 18:29:08,830 INFO L131 PetriNetUnfolder]: For 104485/106346 co-relation queries the response was YES. [2022-11-18 18:29:09,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118069 conditions, 44079 events. 23847/44079 cut-off events. For 104485/106346 co-relation queries the response was YES. Maximal size of possible extension queue 1981. Compared 421045 event pairs, 3074 based on Foata normal form. 647/39639 useless extension candidates. Maximal degree in co-relation 116930. Up to 15838 conditions per place. [2022-11-18 18:29:09,358 INFO L137 encePairwiseOnDemand]: 238/254 looper letters, 232 selfloop transitions, 90 changer transitions 0/463 dead transitions. [2022-11-18 18:29:09,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 463 transitions, 2803 flow [2022-11-18 18:29:09,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:29:09,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:29:09,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2150 transitions. [2022-11-18 18:29:09,369 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7695060844667144 [2022-11-18 18:29:09,369 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2150 transitions. [2022-11-18 18:29:09,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2150 transitions. [2022-11-18 18:29:09,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:29:09,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2150 transitions. [2022-11-18 18:29:09,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 195.45454545454547) internal successors, (2150), 11 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:09,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:09,387 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:09,387 INFO L175 Difference]: Start difference. First operand has 251 places, 271 transitions, 1152 flow. Second operand 11 states and 2150 transitions. [2022-11-18 18:29:09,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 463 transitions, 2803 flow [2022-11-18 18:29:10,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 463 transitions, 2791 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:29:10,358 INFO L231 Difference]: Finished difference. Result has 264 places, 305 transitions, 1772 flow [2022-11-18 18:29:10,358 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=1146, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1772, PETRI_PLACES=264, PETRI_TRANSITIONS=305} [2022-11-18 18:29:10,359 INFO L288 CegarLoopForPetriNet]: 215 programPoint places, 49 predicate places. [2022-11-18 18:29:10,360 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 305 transitions, 1772 flow [2022-11-18 18:29:10,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 176.375) internal successors, (1411), 8 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:10,361 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:29:10,361 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:10,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:29:10,361 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-18 18:29:10,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:10,362 INFO L85 PathProgramCache]: Analyzing trace with hash -182643856, now seen corresponding path program 1 times [2022-11-18 18:29:10,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:10,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982010547] [2022-11-18 18:29:10,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:10,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:10,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:10,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:10,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982010547] [2022-11-18 18:29:10,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982010547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:29:10,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:29:10,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:29:10,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957318765] [2022-11-18 18:29:10,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:29:10,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:29:10,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:10,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:29:10,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:29:10,606 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 254 [2022-11-18 18:29:10,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 305 transitions, 1772 flow. Second operand has 5 states, 5 states have (on average 199.2) internal successors, (996), 5 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:10,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:29:10,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 254 [2022-11-18 18:29:10,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:29:15,370 INFO L130 PetriNetUnfolder]: 11150/23561 cut-off events. [2022-11-18 18:29:15,371 INFO L131 PetriNetUnfolder]: For 85292/87823 co-relation queries the response was YES. [2022-11-18 18:29:15,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65827 conditions, 23561 events. 11150/23561 cut-off events. For 85292/87823 co-relation queries the response was YES. Maximal size of possible extension queue 1058. Compared 230081 event pairs, 5968 based on Foata normal form. 625/21686 useless extension candidates. Maximal degree in co-relation 65001. Up to 12777 conditions per place. [2022-11-18 18:29:15,690 INFO L137 encePairwiseOnDemand]: 247/254 looper letters, 191 selfloop transitions, 9 changer transitions 0/367 dead transitions. [2022-11-18 18:29:15,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 367 transitions, 2580 flow [2022-11-18 18:29:15,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:29:15,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:29:15,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1080 transitions. [2022-11-18 18:29:15,695 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8503937007874016 [2022-11-18 18:29:15,695 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1080 transitions. [2022-11-18 18:29:15,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1080 transitions. [2022-11-18 18:29:15,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:29:15,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1080 transitions. [2022-11-18 18:29:15,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 216.0) internal successors, (1080), 5 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:15,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:15,704 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:15,704 INFO L175 Difference]: Start difference. First operand has 264 places, 305 transitions, 1772 flow. Second operand 5 states and 1080 transitions. [2022-11-18 18:29:15,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 367 transitions, 2580 flow [2022-11-18 18:29:16,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 367 transitions, 2525 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-11-18 18:29:16,082 INFO L231 Difference]: Finished difference. Result has 261 places, 289 transitions, 1593 flow [2022-11-18 18:29:16,083 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=1568, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1593, PETRI_PLACES=261, PETRI_TRANSITIONS=289} [2022-11-18 18:29:16,087 INFO L288 CegarLoopForPetriNet]: 215 programPoint places, 46 predicate places. [2022-11-18 18:29:16,087 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 289 transitions, 1593 flow [2022-11-18 18:29:16,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 199.2) internal successors, (996), 5 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:16,088 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:29:16,089 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:16,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:29:16,089 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread6Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-18 18:29:16,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:16,090 INFO L85 PathProgramCache]: Analyzing trace with hash -211791089, now seen corresponding path program 1 times [2022-11-18 18:29:16,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:16,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942847869] [2022-11-18 18:29:16,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:16,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:16,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:16,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:16,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942847869] [2022-11-18 18:29:16,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942847869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:29:16,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:29:16,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:29:16,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530243235] [2022-11-18 18:29:16,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:29:16,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:29:16,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:16,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:29:16,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:29:16,227 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 254 [2022-11-18 18:29:16,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 289 transitions, 1593 flow. Second operand has 4 states, 4 states have (on average 196.75) internal successors, (787), 4 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:16,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:29:16,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 254 [2022-11-18 18:29:16,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:29:22,186 INFO L130 PetriNetUnfolder]: 17040/31397 cut-off events. [2022-11-18 18:29:22,186 INFO L131 PetriNetUnfolder]: For 100291/103555 co-relation queries the response was YES. [2022-11-18 18:29:22,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88563 conditions, 31397 events. 17040/31397 cut-off events. For 100291/103555 co-relation queries the response was YES. Maximal size of possible extension queue 1647. Compared 294219 event pairs, 2251 based on Foata normal form. 760/27414 useless extension candidates. Maximal degree in co-relation 78684. Up to 15872 conditions per place. [2022-11-18 18:29:22,562 INFO L137 encePairwiseOnDemand]: 245/254 looper letters, 129 selfloop transitions, 80 changer transitions 0/376 dead transitions. [2022-11-18 18:29:22,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 376 transitions, 2574 flow [2022-11-18 18:29:22,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:29:22,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:29:22,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1083 transitions. [2022-11-18 18:29:22,568 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.852755905511811 [2022-11-18 18:29:22,568 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1083 transitions. [2022-11-18 18:29:22,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1083 transitions. [2022-11-18 18:29:22,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:29:22,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1083 transitions. [2022-11-18 18:29:22,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 216.6) internal successors, (1083), 5 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:22,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:22,577 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:22,577 INFO L175 Difference]: Start difference. First operand has 261 places, 289 transitions, 1593 flow. Second operand 5 states and 1083 transitions. [2022-11-18 18:29:22,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 376 transitions, 2574 flow [2022-11-18 18:29:22,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 376 transitions, 2556 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 18:29:23,006 INFO L231 Difference]: Finished difference. Result has 264 places, 306 transitions, 2085 flow [2022-11-18 18:29:23,007 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=1575, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2085, PETRI_PLACES=264, PETRI_TRANSITIONS=306} [2022-11-18 18:29:23,008 INFO L288 CegarLoopForPetriNet]: 215 programPoint places, 49 predicate places. [2022-11-18 18:29:23,008 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 306 transitions, 2085 flow [2022-11-18 18:29:23,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 196.75) internal successors, (787), 4 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:23,009 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:29:23,009 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:23,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:29:23,010 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-18 18:29:23,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:23,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1281063181, now seen corresponding path program 1 times [2022-11-18 18:29:23,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:23,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259674554] [2022-11-18 18:29:23,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:23,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:23,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:23,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:23,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259674554] [2022-11-18 18:29:23,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259674554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:29:23,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:29:23,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:29:23,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312171131] [2022-11-18 18:29:23,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:29:23,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:29:23,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:23,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:29:23,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:29:23,291 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 254 [2022-11-18 18:29:23,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 306 transitions, 2085 flow. Second operand has 10 states, 10 states have (on average 172.6) internal successors, (1726), 10 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:23,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:29:23,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 254 [2022-11-18 18:29:23,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand